For the complete documentation index, see llms.txt. Markdown versions of documentation pages are available by appending .md to the page URL.
Primary navigation

Suggested

Get started

Foundations

Explore

Available on

Releases

API Dashboard
Try ChatGPT

ChatGPT & Codex changelog

Latest updates to ChatGPT and Codex

September 2026

  • Codex CLI 0.156.1

  • GPT-6 Sol and Luna in Codex and ChatGPT Work

    GPT-6 Sol and GPT-6 Luna are rolling out to Codex and ChatGPT Work at lower token prices than their GPT-5.6 predecessors. Use Sol for complex coding and agentic workflows, and Luna for focused, high-volume tasks.

    Both models are rolling out to Plus, Pro, Business, Enterprise, and Edu users. Free and Go users can access Luna in the desktop app. Availability depends on rollout and workspace settings; Enterprise administrators must enable the new models. In ChatGPT, the models are available in Work and Codex, but not Chat.

    Choose a model in the picker when available. In the CLI, use /model or start a task with codex --model gpt-6-sol or codex --model gpt-6-luna.

    See Models for selection and migration guidance, Pricing for credit rates and usage, and Workspace model availability for administrator controls.

  • Codex CLI 0.156.0 

    $ npm install -g @openai/codex@0.156.0
    View details

    New Features

    • Choose an optional fullscreen UI with /tui for your next launch, including transcript search, mouse selection, and right-click copying. (#46732, #46734, #46883, #46895)
    • Voice conversations are enabled by default, with an F8 toggle, a /voice settings picker, and bundled audio runtimes for Linux and Windows. (#44921, #46071, #44622, #44714, #44922)
    • Explore account usage, token totals, and plugin and skill activity through the /usage analytics dashboard. (#45764, #45769)
    • Filter tasks by status and create worktree sessions from the agent command center; worktree support is now enabled by default. (#46839, #45276, #44870)
    • Customize the terminal with six new themes and view supported Mermaid diagrams and display equations directly in responses. (#46504, #46054, #45612)
    • Update the local background server through /daemon, or bypass it with --no-daemon. (#45854, #46088)

    Bug Fixes

    • Preserve streamed answers and plans when turns fail, are interrupted, or receive subagent completion events. (#45549, #46867)
    • Fix clipboard forwarding in tmux and SSH sessions and preserve tab indentation when terminals send pasted text as individual keystrokes. (#45457, #45454)
    • Restore Plan mode when resuming sessions and preserve thread identity and settings when editing earlier prompts. (#45519, #45845)
    • Recover login through system proxies and refresh MCP credentials when OAuth discovery returns a 503 error. (#46562, #44636)
    • Prevent speech from being dropped during playback pauses or bursts of incoming audio. (#46880)
    • Close sandbox isolation gaps involving inbound Windows connections, privileged Linux/macOS sockets, and writes through read-only macOS file handles. (#44639, #45984, #46500)

    Documentation

    • Clarify that deprecated friendly and pragmatic personality settings no longer select response styles. (#45809)
    • Explain how ? matches a single character in network proxy allow and deny patterns. (#46027)

    Chores

    • Update bundled TLS dependencies, including OpenSSL 3.6.4 for Linux musl builds. (#45149, #45489)

    Changelog

    Full Changelog: rust-v0.155.0...rust-v0.156.0

    Full release on Github

  • ChatGPT for iOS 1.2026.251

    New features

    • Create folders directly from the file picker.
    • Added support for writing blocks, with draft alternatives and copy actions.

    Improvements and bug fixes

    • New tasks remember your worktree mode and setup environment for each project.
    • Long queued prompts show a compact preview and expand on tap.
    • Fixed queued prompts missing or appearing outdated after reopening a task.
    • Worktree task cards now open correctly after setup completes.
    • Restored the new-task button for projects containing only worktree tasks.
    • Improved voice-call reliability during temporary connection interruptions.
    • Better alignment of project, environment, and Git controls on iPad.
    • Fixed the thinking timer resetting when a new task starts.

  • Codex CLI 0.155.1 

    $ npm install -g @openai/codex@0.155.1
    View details

    Bug Fixes

    • New local TUI sessions now leave reasoning summaries disabled by default, fixing request rejection by providers that do not support them. Explicit reasoning-summary settings remain respected. (#46467)

    Changelog

    Full Changelog: rust-v0.155.0...rust-v0.155.1

    Full release on Github

  • Codex CLI 0.155.0 

    $ npm install -g @openai/codex@0.155.0
    View details

    New Features

    • Added experimental /voice conversations with live transcripts and microphone controls on supported builds, enabled through /experimental. (#43581, #43651, #44331)
    • The TUI now shows live reasoning summaries in the status row and completion timestamps after successful turns. (#43558, #43921)
    • Added task hiding, archiving, and deletion in the agents overview, plus worktree ownership details and confirmed deletion of clean managed worktrees. (#43942, #44424, #44433)
    • Added Touch ID verification for MCP requests in local TUI sessions on supported Macs. (#43624, #43712, #43715)
    • Added configurable daemon update schedules and codex app-server daemon update; saved threads and active goals can recover after daemon restarts. (#43542, #43562, #44314)
    • Amazon Bedrock can now obtain AWS credentials from configured commands, with caching, expiration-based refresh, and authentication recovery. (#44028)

    Bug Fixes

    • Accepted prompts are now saved even when compaction fails before a turn starts. (#44487)
    • Fixed missed tmux resizes, transcript viewport restoration, and stale history appearing after switching threads. (#43603, #43889, #43994)
    • MCP servers now report expired OAuth credentials accurately and provide reconnect guidance when token refresh fails. (#43947, #44359)
    • Automatic approval reviews now preserve complete actions and authorization evidence more reliably, retry transient failures, and distinguish review failures from unsafe-action findings. (#44482, #44569, #44570)
    • Switching accounts now invalidates remote-control sessions, cached WebSocket state, and model catalogs belonging to the previous identity. (#43906, #44341, #44489)
    • Blocked Windows-process escapes from restricted WSL sandboxes and hardened brokered shell snapshots against credential exposure. (#44286, #43909, #44040)

    Chores

    • Aligned Python SDK and runtime publishing with stable CLI releases, using matching versions and verifying runtime assets before SDK publication. (#44067)

    Changelog

    Full Changelog: rust-v0.154.0...rust-v0.155.0

    Full release on Github

  • GPT-5.3-Codex-Spark deprecated

    GPT-5.3-Codex-Spark was deprecated on September 14, 2026. The research preview is no longer available in the ChatGPT desktop app, Codex CLI, or IDE extension.

    Switch to one of the recommended models, and update saved configurations, custom agents, and scripts that select gpt-5.3-codex-spark.

    For faster responses with a supported model, see Fast mode.

  • GPT-5.5 retires from ChatGPT, ChatGPT Work, and Codex on October 14

    On October 14, 2026, GPT-5.5 will retire from ChatGPT, ChatGPT Work, and Codex on all plans, including consumer, Business, Enterprise, and Edu plans. This retirement does not apply to the OpenAI API.

    For Codex with ChatGPT sign-in, switch from gpt-5.5 to gpt-5.6-sol (GPT-5.6 Sol) before the retirement date.

    Update workspace defaults, saved model settings, managed configurations, custom agents, scheduled tasks, and scripts that still select gpt-5.5.

    See GPT-5.5 retirement and workspace model availability for migration guidance.

  • Quick chats with Pets and Appshots on Windows 26.908

    Chat while you work

    Keep ChatGPT close while you work in other apps. In the ChatGPT desktop app on macOS and Windows, you can now type a quick chat from the floating Pets controls and press Enter to send it. Use @ to add context and $ to choose a skill. Select the bell icon to follow progress in your threads, then select a thread to open the full conversation.

    Choose a companion or show just the controls in Settings > Pets. Press Option+Space on macOS or Windows+Alt+P on Windows to show the controls and focus Quick Chat. Pressing the shortcut again keeps Quick Chat open. You can change Show pet in Settings > Keyboard shortcuts. To hide the controls, select Hide pet in the command menu or Settings > Pets.

    On macOS, you can also send an appshot to the floating controls. Keep the main ChatGPT window in the background and choose Automatic for Appshot destination.

    Learn more about Pets.

    Share an app window on Windows

    Appshots are now available in the ChatGPT desktop app on Windows. Press both Alt keys to share the frontmost app window with ChatGPT, then ask a question or describe what you want to do. An appshot includes a screenshot and available text from that window. You can customize the shortcut and choose which chat receives it in settings.

    Other improvements and bug fixes

    • Open files directly from a conversation’s Sources panel, or download files that ChatGPT can’t preview.
    • Assign a Codex Micro key to Insert text and add your own reusable text to the active prompt without sending it.
    • Reset a pet to its default size in settings. Custom pets also stay in place when you refresh their artwork.
    • Keep unfinished comments on response text when you switch chats and return.
    • ChatGPT dictation now respects your saved Main language preference.
    • Keep tab widths and scroll positions more stable as you close browser tabs in full and split views.

  • Codex CLI Python SDK 0.154.0 

    $ npm install -g @openai/codex@0.154.0
    View details

    Install with pip install --upgrade openai-codex==0.154.0 (Python 3.10 or later). This release includes the matching openai-codex-cli-bin==0.154.0 runtime.

    • Add max and ultra reasoning-effort values. #39662
    • Add ExternalMessage to synchronous and asynchronous run() and turn() calls. External content can start a turn or join an active regular turn with tool-level authority; it does not grant user authorization. Consumers receive independent event streams. #44086
    • Add include_turns on resume/fork, turn_service_tier for one newly started turn, and source metadata. History selection changes the returned response, not model context. Existing defaults are preserved when these options are omitted. #44084
    • Refresh generated protocol models and notifications, and preserve completion events that arrive before a turn-start response. #44032, #44400

    Check these migrations when upgrading:

    • HookMetadata wraps its handler in .root. Replace accesses such as hook.command with hook.root.command, checking hook.root.handler_type before reading handler-specific fields.
    • Some previously unknown notifications now have typed payloads. Read named fields instead of .params; unknown or invalid payloads still use UnknownNotification.
    • Manually constructed or late-joining turn handles receive events from their attachment point. Earlier output is not replayed, so collected results can be partial; attaching after completion can raise TransportClosedError. Use thread.read(include_turns=True) for saved history. Handles returned directly by thread.turn(...) retain events from when their request is sent.

    Custom codex_bin overrides require CLI 0.151.0 or newer for ExternalMessage and the new history/per-turn options.

    Full release on Github

  • Codex CLI Cygwin build inputs and matching source for Windows voice 

    $ npm install -g @openai/codex@voice-cygwin-108b38cf67cbb731
    View details

    CI-only build tools for native Windows voice releases. These archives are not included in Codex user packages.

    • cygwin-build-inputs.tar.gz: 103 pinned Cygwin binary packages and the signed package index used by the offline build installer.
    • cygwin-build-sources.tar: all 83 corresponding source package archives at the exact versions named by that index. It includes the upstream source, patches, and build recipes provided in Cygwin's -src packages.
    • cygwin-source-map.json: each selected binary package mapped to its source archive and the source size and SHA-512 digest from the pinned index.
    • CYGWIN-SOURCE-NOTICE.txt: source access and licensing notice.

    The binary and source archive SHA-256 pins live in .github/scripts/voice-cygwin-snapshot.json in the Codex repository. Cygwin describes the licensing terms at https://cygwin.com/licensing.html. Licenses vary by package; consult the corresponding source and binary package archives for their notices.

    Full release on Github

  • Codex CLI 0.154.0 

    $ npm install -g @openai/codex@0.154.0
    View details

    New Features

    • GPT-6-Astra is now available in the model picker and Amazon Bedrock catalogs. (#42879, #42619)
    • Experimental worktree support lets you create isolated checkouts for new or forked sessions using --worktree or /worktree, then browse and resume them. (#42652, #43069, #43120, #43286)
    • Answer questions inline while Codex continues working, using suggested choices or custom text without losing your main draft. (#42891, #42894, #42897)
    • Windows sessions can now share a background Codex server, with daemon lifecycle commands and managed updates. (#42405, #42392)
    • Vim editing gains R replace mode with undo and dot-repeat, plus more reliable Escape handling in legacy terminals. (#42194, #42584)
    • Copying responses preserves formatting in rich-text apps, and /copy can copy status output or individual session fields. (#42847, #43055)

    Bug Fixes

    • Existing sessions pick up newly installed plugin tools and refresh skills and hooks after external plugin upgrades or rollbacks. (#42284, #42593, #42990)
    • MCP connections coordinate OAuth token refreshes and surface login challenges when refresh fails, without automatically replaying rejected tool calls. (#42413, #42552)
    • Startup avoids running workspace-controlled helpers before trust is established, and the macOS sandbox blocks terminal input injection. (#42324, #42590)
    • Remote resume and fork operations preserve saved permissions; fresh sessions and forks respect server model defaults unless explicitly overridden. (#43330, #43177, #43355)
    • Resuming a conversation open in another app now shows a read-only transcript with a retry option while preserving your draft. (#43253)
    • Automatic approval reviews better preserve authorization context through compaction and reject approvals invalidated by new user instructions or answers. (#42844, #42852, #43442)

    Documentation

    • Updated the bundled OpenAI Docs skill with GPT-6-Astra migration, compatibility, and prompting guidance. (#42931)

    Chores

    • The deprecated codex mcp-server entry point is no longer available. (#42993)

    Changelog

    Full Changelog: rust-v0.153.0...rust-v0.154.0

    Full release on Github

  • ChatGPT for iOS 1.2026.244

    New features

    • Reference other tasks directly in the composer with @ mentions.
    • Answer live questions while Codex continues working, without losing your draft.
    • Explore files with Back navigation, recent files, and remembered reading positions.
    • Choose a starting branch for new worktrees, or include your current local changes.
    • Worktree setup can now continue in the background on iOS 26, with progress shown in a Live Activity.

    Improvements and bug fixes

    • Voice now respects your selected model and reasoning effort.
    • Restored missing delegated-task messages and fixed navigation between linked tasks.
    • Code reviews now complete more reliably, without duplicate activity or stuck running states.
    • Fixed crashes and stale queued messages when switching from Queue to Steer.
    • Improved reconnect reliability and preserved device pairing during temporary service outages.
    • Resolved duplicate plugin skills in composer suggestions.

  • Codex MCP server removed

    The codex mcp-server command and standalone codex-mcp-server binary have been removed after their deprecation on August 24, 2026. Update integrations that launch either command before upgrading Codex.

    Use the Codex app server for integrations. The app-server command is experimental and isn’t supported for production workloads.

    See the migration guidance for details. Codex continues to support connecting to external MCP servers through codex mcp.

  • Codex CLI 0.153.4 

    $ npm install -g @openai/codex@0.153.4
    View details

    Bug Fixes

    • Fixed Astra’s visibility in the bundled model picker and made it the bundled default when no model is explicitly configured. (#42874)
    • Updated Astra’s guidance to use asynchronous questions only when the tool is available in the session. (#42878)

    Changelog

    Full Changelog: rust-v0.153.3...rust-v0.153.4

    • #42874 [0.153 hotfix] Show Astra in bundled model picker @rhan-oai
    • #42878 [0.153 hotfix] Qualify Astra async-question guidance by tool availability @rhan-oai

    Full release on Github

  • Codex CLI 0.153.3 

    $ npm install -g @openai/codex@0.153.3
    View details

    New Features

    • Added GPT-6-Astra to the Amazon Bedrock model picker for Mantle and Runtime global/US routes. (#42805)

    Bug Fixes

    • Corrected GPT-6-Astra’s guidance for asynchronous clarification questions to use the supported tool and recognize that it accepts text only. (#42809)

    Changelog

    Full Changelog: rust-v0.153.2...rust-v0.153.3

    Full release on Github

  • Codex CLI 0.153.2 

    $ npm install -g @openai/codex@0.153.2
    View details

    Bug Fixes

    • Corrected the GPT-6-Astra Fast tier description to say “2x speed, increased usage” instead of “1.5x.” This changes only the displayed text, not how requests run. (#42632)

    Changelog

    Full Changelog: rust-v0.153.1...rust-v0.153.2

    Full release on Github

  • Codex CLI 0.153.1

  • Codex CLI 0.153.0 

    $ npm install -g @openai/codex@0.153.0
    View details

    New Features

    • Vim mode now supports undo with u and redo with Ctrl+R, preserving complete drafts including pasted content and attachments. (#41941, #42140)
    • The plugin CLI can list, install, and remove plugins from remote marketplaces. (#42150)
    • Set tui.auto_recap = false to disable automatic recaps while keeping manual /recap available. (#42101)
    • TUI history shows complete patches, input sent to background terminals, and individual completed commands. (#41893, #42107)
    • Plus and Team users receive an earlier warning when less than half of their allowance remains in an approximately five-hour usage window. (#42142)

    Bug Fixes

    • TUI sessions reconnect after an external app-server connection drops, preserving drafts and transcripts while keeping uncertain or queued submissions paused for review. (#41911, #41916, #41918)
    • Full Access skips Guardian reviews for confirmation-only actions. User approval mode skips background Guardian scoring and prewarming, while sensitive-action checks and requests for user input retain their existing handling. (#42147, #42256)
    • Guardian review history survives compaction, restarts, and user-created forks while respecting rollback boundaries and isolating subagent history. (#41879, #42065)
    • Remembered MCP tool approvals are scoped to the selected app account, and relative MCP executable paths start more reliably on macOS. (#42133, #42117)
    • Rollout compression includes shared histories, codex exec resume handles compressed rollouts when selecting by working directory, and thread forks work with symlinked session roots. (#42039, #42135)

    Configuration and API Updates

    • App-server thread metadata includes nullable model and reasoningEffort fields. Structured asynchronous questions are supported through request_user_input_async when enabled by the model catalog. (#42151, #42178)
    • tui.disable_paste_burst replaces the top-level setting, which remains supported as a fallback. (#41976)
    • Adds the disabled-by-default features.context_management.experimental_mode configuration. When enabled for eligible ChatGPT Plus, Pro, or Pro Lite sessions using the Codex backend, it activates token-budget context, history notes, and the new_context tool. API-key sessions, custom providers, and temporary structured threads remain excluded. (#42385)

    Changelog

    Full Changelog

    • #41870 Use shared transcript collection for Guardian reviews
    • #41879 Preserve Guardian review evidence across compaction
    • #41884 Add pinned native voice source preparation
    • #41890 Add native voice dependency build recipe
    • #41892 Retain the MCP client for event streams
    • #41893 Show successful TUI commands individually
    • #41894 Fix Windows native voice dependency builds
    • #41897 Add the voice helper lifecycle foundation
    • #41899 Keep MCP event subscriptions alive after task unloading
    • #41901 Load bounded context after empty wake turns
    • #41902 Add installed voice host lifecycle support
    • #41906 Add a manager for MCP event streams
    • #41908 Avoid scanning archived rollouts when archiving threads
    • #41909 Make permission transforms aware of executor path context
    • #41911 Preserve TUI drafts after app-server disconnects
    • #41912 Persist response token usage in rollout history
    • #41913 Preserve TUI status timing when the status row is hidden
    • #41915 Move the config schema generator into a dedicated crate
    • #41916 Reconnect TUI app-server sessions automatically
    • #41917 Open the agents overview from an empty composer
    • #41918 Restore agent navigation after TUI reconnects
    • #41923 Allow per-call sideband endpoints for existing realtime calls
    • #41924 Record realtime conversation history in Core
    • #41925 Test repository-wide Rust formatter discovery
    • #41928 Use executor path context for permission preapproval
    • #41929 Open the agents overview directly in the reconnect test
    • #41933 Report configured sandbox policy consistently
    • #41934 Omit undersized WAV output from Code Mode
    • #41936 Attach failed Guardian reviews to diagnostic reports
    • #41937 Limit background terminal input previews
    • #41938 Clarify resume guidance in exit summaries
    • #41940 Preserve transcript layout caches during backtrack selection
    • #41941 Add Vim undo to the TUI composer
    • #41944 Emit turn cost telemetry for ChatGPT sessions
    • #41946 Expand extension permission regression coverage
    • #41949 Add plugin reconciliation app-server API
    • #41950 Improve tracing for nested tool calls and exec processes
    • #41953 Enforce marketplace source policy for curated plugins
    • #41974 Track TUI starts by app server mode
    • #41976 Move disable_paste_burst under [tui]
    • #41980 Preserve raw response usage metadata
    • #42003 Report turn trigger and source in turn analytics
    • #42031 Share Guardian user-message retention logic
    • #42033 Improve Guardian report diagnostics
    • #42039 Include shared histories in rollout compression
    • #42043 Tag Codex home size metrics with compression state
    • #42047 Add per-account approval settings for apps
    • #42054 Honor explicit account selectors for Apps tool calls
    • #42056 Honor app link settings for MCP tool approvals
    • #42065 Preserve Guardian history across thread reconstruction
    • #42066 Remove selected core test cases
    • #42068 Detect standalone installs from the macOS CLI bundle
    • #42069 Remove redundant test coverage
    • #42071 Detect Vite+-managed Codex installs
    • #42076 Unify Guardian context section collection
    • #42082 Attribute nested REPL reviews to their tool calls
    • #42085 Centralize Guardian context composition
    • #42086 Attribute Guardian reviews to OpenAI app tools
    • #42094 Record Windows MXC availability
    • #42096 Make diagnostic report uploads resilient to slow networks
    • #42100 Prefer remote Sites over the bundled plugin
    • #42101 Add a TUI setting to disable automatic recaps
    • #42102 Extract OTEL trace WebSocket into a reusable crate
    • #42104 Show recent sessions in the agent command center
    • #42107 Show full patches and terminal input in TUI history
    • #42109 Format Python scripts across the repository
    • #42110 Treat bundled cleanup hooks as built-ins
    • #42113 Apply remote platform semantics to exec safety checks
    • #42114 Centralize remote plugin mutations in PluginsManager
    • #42117 Fix relative MCP server spawning on macOS
    • #42118 Refine hook activity rendering in the TUI
    • #42121 Allow updating the approval reviewer for active turns
    • #42123 Preserve descriptive labels on local file links
    • #42126 Ignore non-JSON files in plugin catalog test helpers
    • #42128 Prepare MCP connections for coordinated OAuth refresh
    • #42132 Bound Git root discovery for metadata enrichment
    • #42133 Scope session MCP approvals to app account links
    • #42134 Include app link metadata in MCP approval elicitations
    • #42135 Support thread forks from symlinked session roots
    • #42137 Prewarm shell snapshots for eligible turns
    • #42140 Add redo support to Vim composer history
    • #42142 Add early rate-limit warnings for Plus and Team plans
    • #42144 Add Guardian V2 analytics events
    • #42146 Resolve permission requests in the executor context
    • #42147 Skip Guardian reviews in Full Access
    • #42149 Upgrade Git marketplaces from merged configuration
    • #42150 Support remote marketplaces in the plugin CLI
    • #42151 Expose model settings in app-server thread metadata
    • #42161 Split tool JSON Schema code into focused modules
    • #42164 Record result sources in app tool analytics
    • #42173 Support header injections in network requirements
    • #42174 Add a cacheable Bazel app-server schema bundle
    • #42178 Add structured asynchronous user input requests
    • #42256 Skip Guardian scoring in User approval mode
    • #42385 Add experimental context management activation

    Full release on Github

  • ChatGPT for iOS 1.2026.237

    New features

    • Attachments now work across all connected hosts, including Windows and Linux, and support videos from the Photo Library.
    • Press and hold the attachment button to attach recent photos.
    • A new Priority view brings running tasks, unread updates, and tasks awaiting your response to the top of the task list.
    • Queued prompts now sync with the connected host, remain editable, and send even when the app is in the background.
    • Long-running tasks now show their live working time.
    • Task menus now include an option to copy the thread ID.

    Improvements and bug fixes

    • Task list loading and organization are faster and more reliable, with simpler date sections and fewer stalls or disappearing projects.
    • Reconnects are more reliable, resolving stuck Send states, missing approvals, and stale task updates.
    • Long responses now stream with fewer visual interruptions.
    • Side chat messages remain available until you close them, even after the chat can no longer reconnect.

  • Codex CLI 0.152.1

  • Codex CLI 0.152.0 

    $ npm install -g @openai/codex@0.152.0
    View details

    New Features

    • Vim mode supports / and ? searches within drafts, highlighted matches, and repeat navigation with n and N. (#41586)
    • Rate-limit banners offer actions for checking usage, managing credits, resetting limits, and managing plans. (#41742)
    • The terminal UI and codex exec show credential-refresh progress, including Amazon Bedrock reauthentication. (#41239)
    • MCP server names can contain :, @, /, and ., supporting package-style names throughout CLI commands and authentication. (#41700)
    • Individual MCP tools support an output_token_limit setting, with consistent truncation across session resumes. (#41421)
    • App-server clients can configure thread/shellCommand timeouts, including deadlines longer than one hour. (#41384)

    Bug Fixes

    • Vim-enabled composers now start fresh drafts in Insert mode, including after submitting messages or dispatching slash commands. (#41921)

    • Automatic approval reviews can retain longer messages and a larger conversation transcript. (#41931)

    • Automatic approval reviews preserve user instructions, answers, and valid authorizations across history compaction. (#41660, #41846, #41852)

    • Resumed threads restore their saved working directory when none is supplied, and client metadata updates preserve filesystem permissions. (#41567, #41464)

    • MCP tools remain available through cache refreshes and remote plugin changes; authentication retries use refreshed helper-provided headers. (#41336, #41344, #41396, #41400)

    • Opening the model picker refreshes available models without losing the highlighted choice. (#41467)

    • Fixed Windows sandbox execution with Microsoft Store PowerShell, subprocess hangs on terminal queries, and cursor-related display corruption in older JediTerm terminals. (#41227, #41436, #41673)

    • Cloud task requests reject untrusted backend URLs and disable redirects to protect saved credentials. (#41403)

    Chores

    • The planning tool is disabled by default; enable it with tools.update_plan.enabled = true. (#41744)
    • Plugin recommendations begin loading during startup, reducing delays before the first turn. (#41375)

    Changelog

    Full Changelog: rust-v0.151.0...rust-v0.152.0

    Full release on Github

August 2026

  • Codex CLI 0.151.0 

    $ npm install -g @openai/codex@0.151.0
    View details

    New Features

    • Added a configurable grace period for discovering tools from optional MCP servers. (#41199)
    • Extensions can now inspect or replace MCP tool results before they reach the model. (#41202)
    • Plugin catalogs now combine per-repository configuration and report invalid project marketplaces without hiding valid plugins. (#41208)

    Bug Fixes

    • Preserved restored permission profiles across TUI turns and prevented /cd from weakening sandbox restrictions. (#41192)
    • Kept tool availability and reasoning effort correct when switching models or falling back to another model. (#41195, #41206)
    • Improved remote sandbox enforcement using the executor’s actual home directory, operating system, and path conventions. (#41196, #41204, #41207, #41209)
    • Preserved structured MCP tool and resource errors in app-server responses. (#41196)
    • Counted nested subagent token usage toward root goal budgets. (#41183)
    • Prevented stale Guardian classifications from authorizing actions after permission state changes. (#41196)

    Chores

    • Added telemetry for escalated stdin reviews and remote executor MCP discovery. (#41189, #41205)
    • Stabilized Guardian WebSocket and core fixture tests under slow or highly concurrent CI. (#41191, #41194)

    Changelog

    Full Changelog: rust-v0.150.0...rust-v0.151.0

    Full release on Github

  • ChatGPT for iOS 1.2026.230

    New features

    • Added task search across titles and conversation content on connected hosts.
    • Added a compact composer gauge for viewing and adjusting reasoning effort.
    • Added a full-screen editor for longer prompts.
    • Added configurable Home Screen shortcuts for ChatGPT, Work, and Codex Remote.
    • Added optional comments to selected response annotations.

    Improvements and bug fixes

    • Improved loading for long threads, with older history fetched as needed.
    • Refined task list layout, ordering, and pinning to better match desktop.
    • Inline visualizations now follow iOS appearance and accent settings.

  • Browser extensions, site tools, and cloud sign-in

    • More browsers: Use the ChatGPT browser extension in Microsoft Edge, Brave, Opera, and Vivaldi, as well as Chrome. Set up your browser in Settings > Computer Use in the ChatGPT desktop app. All five support tab mentions and browser control; Opera doesn’t support side chat.

    • Site tools (WebMCP): In the desktop app’s built-in browser, ChatGPT Work and Codex can use tools provided by a website to work with the page. Use GPT-5.6 Sol or GPT-5.6 Terra and update to the latest desktop app. Site tools aren’t available with GPT-5.6 Luna or in Enterprise or Edu workspaces.

    • Cloud browser sign-in: On eligible plans, ChatGPT Work on the web, iOS, and Android can ask you to sign in to a supported website through the cloud browser. Enter your details in the sign-in flow, not in the chat. Cloud browser sessions stay separate from your local browser. Website sign-in isn’t available for Enterprise or Edu workspaces.

    Availability depends on rollout and workspace settings. Website-access and action-confirmation requirements still apply.

  • Trigger scheduled tasks from Gmail, Slack, and GitHub events

    ChatGPT scheduled tasks can now run when supported events occur in Gmail, Slack, or GitHub. Filter Gmail messages by sender or subject, watch selected Slack channels, or respond to pull request activity such as reviews, comments, commit updates, and merges.

    Event-triggered tasks are available in ChatGPT on the web and mobile for eligible plans. Connect the relevant app and approve its requested access before creating a task. The ChatGPT Slack app must be a member of each watched channel, and the connected GitHub app must have access to each watched repository.

    An event-triggered task can’t also use a time-based schedule. When matching events arrive close together, ChatGPT may combine them in one run. Open Scheduled to review pending events or choose Run now.

    Learn how to trigger scheduled tasks from app events.

  • Codex MCP server command deprecated

    The codex mcp-server command is now deprecated. Use the Codex app server instead.

    Update, September 5, 2026: The command and standalone codex-mcp-server binary have been removed. See the migration guidance.

  • Codex and ChatGPT updates

    New features

    • Apple Messages: Use the Apple Messages plugin to read and search Messages chats on your Mac and prepare or send messages. It’s available on all plans in the ChatGPT desktop app for macOS. You can use the plugin in ChatGPT Work and Codex. By default, ChatGPT sends messages only after you approve the message and its recipients. See the plugin guide for persistent-approval risks, revocation steps, and the known issue with tasks that disable approval prompts.

    • Site co-editing: Where Site collaboration is available, owners can invite active members of the same workspace as editors. Editors can read the Site’s live database data, update the Site, save versions, and publish changes after the owner publishes the Site for the first time. Owners retain control of the audience, settings, analytics, ownership, version restoration, and editor access.

    • Editable Site URLs: Where URL editing is available, owners can change an existing Site’s ChatGPT-hosted address without creating another deployment. The previous address redirects to the new URL. Custom domains are a separate, existing feature and aren’t changed by this setting.

    • Computer History in Europe: Computer History is now available in the EEA, Switzerland, and the United Kingdom for ChatGPT Pro, Business, and Enterprise users in the ChatGPT desktop app on macOS. It’s off by default and requires Memories. Business and Enterprise administrators must enable access before workspace members can choose to turn it on.

    • Shared thread snapshots: On all Codex plans, share a read-only snapshot of a local Codex thread from the ChatGPT desktop app for macOS. The snapshot doesn’t update when the original thread changes. Personal-account links can be opened by anyone with the link; workspace-account links are limited to members of the originating workspace. Codex redacts known secret patterns, but review the shared content because sensitive content may remain. View or revoke links in ChatGPT data controls, under Shared links.

    • Unified pinned threads: Keep the same pinned chats across the ChatGPT desktop app and iOS.

  • GitLab support in Codex cloud (Beta)

    GitLab support is available in beta on all ChatGPT plans. Connect a GitLab project to Codex cloud, create an environment for it, start tasks from issues or merge requests with @codex, and request one-off or automatic merge request reviews.

    The integration runs in Codex cloud. A managed workspace admin can disable the connector. GitLab-triggered activity requires permission to configure the applicable webhook. For GitLab Self-Managed or GitLab Dedicated, a workspace admin must configure the connection, and webhook activity requires GitLab 19.0 or later.

    Codex cannot complete a review when GitLab omits a collapsed or oversize diff.

    Learn how to use Codex with GitLab.

  • ChatGPT for iOS 1.2026.223

    New features

    • Added a setting to open ChatGPT directly in Codex Remote on launch.
    • Added support for standard MCP forms and editable message approvals.
    • Linked folders now open directly in the files sheet.

    Improvements and bug fixes

    • Improved the New Thread project picker to reflect the selected host’s current projects.
    • Voice now works directly from existing task composers, connects more reliably, and continues task actions in the background.
    • Improved diff review stability and performance, especially in large workspaces.
    • Added a Retry action when task messages fail to load.
    • Fixed large task responses failing to load.
    • Fixed tasks disappearing or remaining unavailable after being idle, reconnecting, or returning to the task list.
    • Improved host pairing reliability and prevented enrollment checks from freezing the app.
    • Improved response annotations and preserved streamed activity when tasks complete.
    • Canceling or editing a steering message now prevents delivery.

  • Public plugin catalog CSV export

    Eligible ChatGPT Enterprise workspace owners and admins can download a CSV of the public plugins visible to their workspace. The export includes plugin, app, and Chat skill names and descriptions, along with developer, version, date added in UTC, and OpenAI verification metadata.

    Open Admin > Plugins, select Public, and then select the download icon (Export CSV). The export uses a public-catalog snapshot that can be up to 48 hours old and does not include plugins created for the workspace. It isn’t available in FedRAMP workspaces.

    Learn more about plugin controls.

  • Computer History

    Computer History is an opt-in feature in the ChatGPT desktop app on macOS that turns activity across apps and websites into memories and a timeline that ChatGPT and Codex can use. Choose which apps and websites contribute, pause collection, and review or delete your history at any time.

    Computer History is available to ChatGPT Pro, Business, and Enterprise users. Business and Enterprise administrators must enable access before workspace members can turn it on. Initial availability excludes the European Economic Area (EEA), Switzerland, and the United Kingdom.

  • Linux desktop preview and agent imports

    Install the ChatGPT desktop app on Linux

    The ChatGPT desktop app for Linux is available in preview for supported Ubuntu, Debian, and Fedora desktop distributions on x64 and ARM64 processors. Download the .deb or .rpm package for your distribution, then sign in to work with projects, local files, and Codex.

    Import setup and recent work from other agents

    The desktop app supports Claude Code, Claude Cowork, and Cursor. Import instructions, settings, skills, plugins, projects, and recent work, then turn on automatic updates in Settings > Import to keep imported work in sync.

    Codex CLI can also import supported setup and recent chats from Claude Code and Cursor with /import.

  • Introducing Daybreak Blue and Daybreak Red

    Daybreak now offers two access tiers for approved defenders: Daybreak Blue and Daybreak Red. Use them to move from security findings to validated fixes in explicitly authorized engagements.

    Start with Daybreak Blue for most defensive security work. It provides access to general-purpose models such as GPT-5.6 Sol for vulnerability discovery, secure code review, detection engineering, incident response, malware analysis, and patch validation.

    Daybreak Red provides separately approved access to purpose-trained models such as GPT-5.6 Cyber for authorized vulnerability reproduction, exploit validation, penetration testing, red teaming, and complex system analysis.

    Access requires approval through Trusted Access for Cyber and applies only to the approved identity, workspace or API organization and project, model, and product surface. Daybreak Red requires separate approval and provisioning; Daybreak Blue access doesn’t grant access to Daybreak Red.

    Work in an isolated environment, define your engagement scope, use least-privilege permission profiles, and configure Auto-review for eligible actions before they cross the sandbox boundary.

    Learn more about Cyber Safety, Codex credit rates, and API token prices.

  • ChatGPT for iOS 1.2026.209

    Improvements and bug fixes

    • Improved task reconnection with visible progress while keeping existing tasks usable during connection checks.
    • New tasks now preserve their first prompt and attachments while starting, preventing empty tasks that could not be reopened.
    • Improved editing performance for long prompts.
    • Voice conversations now follow your Background Conversations setting.
    • Approvals and user-input requests now recover reliably after reconnecting, with cleaner approval details in the transcript.
    • Fixed follow-up /goal prompts after completing a goal.
    • Fixed task-list freezes, disappearing task titles, flashing thinking summaries, and transcript crashes.

July 2026

  • GPT-5.4 and GPT-5.4 mini retire from Codex on August 31

    On August 31, 2026, GPT-5.4 and GPT-5.4 mini will no longer be available in Codex for users signed in with ChatGPT. GPT-5.4 and GPT-5.4 mini will remain available on the OpenAI API and Codex sessions authenticated with an API key.

    Switch to their recommended replacements:

    • Replace gpt-5.4 with gpt-5.6-terra (GPT-5.6 Terra).
    • Replace gpt-5.4-mini with gpt-5.6-luna (GPT-5.6 Luna).

    Before the cutoff, update workspace defaults, saved model settings, managed configurations, custom agents, and scheduled tasks that use either model.

    See Codex models and workspace model availability for details.

  • Record & Replay expands to the EU, UK, and Switzerland

    Record & Replay is now available in the European Union, the United Kingdom, and Switzerland. On macOS, demonstrate a workflow and turn it into a reusable skill. Computer Use must also be available and enabled.

  • Browser upgrades, multi-repository review, and image editing 26.727

    The latest ChatGPT desktop app update makes browsing, reviewing code, and editing generated images faster and easier.

    Browse and find context faster

    • Type in the built-in browser’s address bar to revisit pages from your browsing history or search Google when there’s no match.
    • Manage your browsing history in Settings, and let ChatGPT search that history when a task needs to find a page you visited before.
    • Use the Chrome extension to mention open tabs or bring highlighted page text into your side chat.
    • Ask questions about any YouTube video in the Chrome extension and get answers in seconds.
    • Right-click a webpage and select Ask ChatGPT.

    Learn more about the built-in browser and the Chrome extension.

    Review changes across repositories

    See all repositories in a multi-folder project and the lines changed in each one. Select Review to inspect diffs across those repositories without switching between separate review views.

    Refine generated images

    Open generated images in an expanded viewer, and switch between Focused view and Canvas view. Add comments across images, choose the ones you want, and send targeted edits without leaving your conversation. Learn more about image generation.

    Other improvements and bug fixes

    • Added a new “Activity view” in the sidebar to view which chats you engaged with recently and require attention. Click the bell or use Cmd/Ctrl+Opt+U to change to the new view.
    • Updated browser settings to show only supported browsers.
    • Improved Windows installation reliability when package file paths are long.
    • Other performance and bug fixes.

  • Sign in with ChatGPT (beta)

    Sign in with ChatGPT is beginning to roll out in beta across select plugins and partner sites, starting with Airtable, GitLab, HubSpot, Notion, Supabase, and Vercel.

    When you connect a supported plugin from the ChatGPT plugin directory, you can use Sign in with ChatGPT to create or link an account with that service in fewer steps. On participating partner sites, you can also select Sign in with ChatGPT to create or access your account.

    This makes it easier to start working with supported tools in ChatGPT and Codex.

    When you sign in, the partner receives only your name, email address, and profile picture, if available. You must still review and approve each plugin’s requested access as a separate step.

  • ChatGPT for iOS 1.2026.202

    Improvements and bug fixes

    • Voice conversations now use your selected ChatGPT voice and show usage-limit warnings.
    • Improved task reconnection and continuity when returning to the app or unlocking with Face ID.
    • Composer autocomplete now matches desktop plugin mentions and includes skills from installed plugins.
    • Selected-text references remain available after sending so you can preview them again.
    • Improved goal controls with clearer progress when pausing or resuming.
    • Inline visualizations now render tables and visual themes more reliably.
    • Large workspace diffs are more responsive.
    • Fixed restored tasks changing the selected model.
    • Prevented the composer from becoming stuck after a prompt started.
    • Corrected browser and computer tool labels, icons, and placeholder output.

  • ChatGPT Voice and multi-folder projects 26.715

    Powered by GPT-Live, ChatGPT Voice lets you talk through work and coordinate tasks in Chat, Work, and Codex in the ChatGPT desktop app.

    Start a new chat or task in voice mode, then ask ChatGPT to start, check, or steer work in other threads. On macOS, turn on Screen context to share an appshot of your frontmost window.

    Voice is available with Plus, Pro, Business, Edu, and Enterprise plans in the desktop app and through Remote on iOS.

    Local projects in the ChatGPT desktop app can now include multiple related folders. From a project’s menu, select Edit project to add folders and choose the primary folder. New chats, Git operations, and automatic discovery of AGENTS.md, skills, and config.toml use the primary folder. Secondary folders remain available for file search, reading, and editing.

    Get started with ChatGPT Voice and multi-folder local projects.

  • ChatGPT for iOS 1.2026.195

    New features

    • Added support for rendering Mermaid diagrams inline in task transcripts.
    • Added support for interactive forms in Codex tasks.
    • Added support for restoring unsent prompts when switching between tasks, hosts, and workspaces.

    Improvements and bug fixes

    • Improved task lists to sort by recent activity and show unavailable hosts when creating a task.
    • Improved the composer with selected-text previews and smoother new-task transitions.
    • Improved goals with support for resuming blocked or usage-limited runs.
    • Improved plan progress, Fast controls, and inline dictation.
    • Improved Remote onboarding, composer guidance, and iPad navigation.
    • Fixed an issue that could close the app when duplicate task-list entries appeared while starting a task.
    • Fixed iOS 18 task actions and task-list styling.
    • Fixed composer spacing, attachment menu padding, and duplicate transcription indicators.

  • ChatGPT for iOS 1.2026.188

    New features

    • Added support for inline visualizations in Codex tasks.

    Improvements and bug fixes

    • Improved creating and managing tasks from conversations, with reliable links to newly created tasks.
    • Improved tool activity styling and progress indicators.
    • Improved file-opening feedback.
    • Improved the composer so controls remain visible above the keyboard for long prompts and larger text sizes.
    • Fixed Fast mode selection and restoration for each task.
    • Fixed initial prompts ignoring the selected approval preset.
    • Fixed autocomplete backgrounds and task rows becoming unresponsive during swipe gestures.

  • Codex joins the ChatGPT desktop app 26.707

    Codex is now part of the ChatGPT desktop app on macOS and Windows. Existing Codex app users can update as usual and keep their projects, settings, and workflows. You can make Codex the default view and, on macOS, keep the Codex app icon.

    New features

    • Edit Markdown and code directly in the app, use inline annotations, and ask Codex to revise selected content.
    • Use PR Chat to review GitHub pull requests and ask Codex about changes in context. Send inline review feedback, inspect proposed patches, and edit, accept, or reject them without leaving the app.
    • Connect custom domains to published Sites.

    Performance improvements and bug fixes

    • Made Computer Use faster with GPT-5.6.
    • Made task and subagent activity easier to follow while Codex works.
    • Simplified plugin management by moving it into Settings.
    • Improved permission handling when resuming tasks or sending follow-ups.
    • Added clearer Full access warnings and a dialog when combining Full access with Ultra.
    • Improved macOS and Windows setup, including macOS installation, Git-backed workflows, and Computer Use on Windows.
    • Fixed task resumption for local projects and onboarding retry loops.
    • Fixed scrolling in pull request reviews and expanded Mermaid diagram labels.
    • Improved mobile connection reliability and fixed video rendering for SSH projects.
    • Additional performance improvements and bug fixes.

  • ChatGPT for iOS 1.2026.181

    New features

    • Added support for creating, searching, opening, forking, and managing Codex tasks directly from a conversation.
    • Added filters for staged, unstaged, branch, and last-turn changes, with controls for comparing branches.
    • Added support for adding selected transcript text directly to the composer.
    • Added previews for image and file attachments before sending.
    • Added inline Photos and Camera pickers to the attachment menu.
    • Added a connection shortcut and support for SSH hosts using private keys or no credentials.
    • Added usage limits and credit details to the task menu.

    Improvements and bug fixes

    • Improved the task list with consistent task terminology, clearer delegated task titles, and a Needs input status.
    • Improved initial task loading and foreground recovery.
    • Improved autocomplete by selecting the first result automatically and accepting it with Return.
    • Improved model, reasoning, and Fast settings so changes remain scoped to the current task.
    • Improved task-management and dynamic tool activity presentation.
    • Improved side chats to open directly when only one conversation is available.
    • Improved plugin autocomplete with installed plugins and their icons.
    • Improved workspace diff accuracy and expand-and-collapse navigation.
    • Improved recovery by preserving thread state across reconnects and host pairings across sign-out.
    • Fixed stuck thread-list loading, prompt mode deadlocks, stale images, and microphone permission alerts.
    • Fixed shake to undo and keyboard refocusing after sending a prompt.

June 2026

  • Codex Remote reaches general availability

    Codex Remote has reached general availability. Use Codex from the ChatGPT mobile app to start or continue work on a connected Mac or Windows host, review progress, and approve actions from your phone.

    Remote Control now uses authenticated one-to-one QR pairing between each iOS or Android device and each host. Update the ChatGPT mobile app and Codex App to the latest versions before connecting. Connections used since June 8, 2026, remain paired; older inactive connections need to pair again.

    The new DigitalOcean plugin lets Codex provision a DigitalOcean Droplet, configure SSH access, and connect it to the Codex App as a remote workspace.

    See Remote connections for setup and troubleshooting.

  • ChatGPT for iOS 1.2026.167

    New features

    • Added per-host personality settings with Friendly and Pragmatic options.
    • Added support for editing goals directly in the composer.
    • Added a link from forked conversations back to the original thread.

    Improvements and bug fixes

    • Improved side chat visibility with separate conversations above the composer.
    • Improved composer autocomplete for commands, skills, and plugins from any prefix.
    • Improved progress visibility for subagents, tasks, and worktree creation.
    • Fixed long threads loading.
    • Improved workspace file search, code review drafts, steering, and host setup and recovery.
    • Fixed Face ID unlocking, stopping responses, collapsed sections, and dark-mode host indicators.

  • Record & Replay and remote task handoff 26.616

    New features

    • Added Record & Replay, a macOS feature that turns a demonstrated workflow into a reusable skill. Initial availability excludes the European Economic Area, the United Kingdom, and Switzerland. You or your administrator must also enable Computer Use.
    • Added bulk actions to automation run history so you can mark every run as read or archive eligible runs.
    • Added thread handoff between local and remote hosts, so you can move a thread to a matching project on a connected host and continue it there. Codex can also coordinate the handoff for you.

    Performance improvements and bug fixes

    • Added new deep links to manage SSH connections.
    • Improved Browser Use so visible-tab routing and annotations persist when a draft browser session moves to the server.
    • Additional performance improvements and bug fixes.

  • More Codex features in the EEA, UK, and Switzerland

    More Codex app capabilities are rolling out to users in the European Economic Area, the United Kingdom, and Switzerland:

    • Computer Use is available on macOS and Windows in these regions, so Codex can operate desktop apps by seeing, clicking, and typing.
    • The Codex Chrome extension is available for browser tasks that need signed-in Chrome context, working across tabs in the background without taking over your browser.
    • Memories can remember useful preferences, recurring workflows, tech stacks, and repository conventions when enabled. Memories are off by default in the European Economic Area, the United Kingdom, and Switzerland.
    • Chronicle is available as an opt-in research preview for ChatGPT Pro subscribers on macOS, helping Codex build memories from recent screen context.

  • ChatGPT for iOS 1.2026.160

    New features

    • Added a workspace file browser for previewing files and linking workspace paths into prompts.
    • Added a directory picker for choosing a workspace folder when starting a new thread.
    • Added controls to expand or collapse all diffs while reviewing changed files.
    • Added MCP approval choices for allowing requested actions in the current chat or across chats.
    • Added LaTeX rendering in Codex messages and plans.

    Improvements and bug fixes

    • Improved status indicators for running threads, queued prompts, side chats, and subagents.
    • Improved pairing and onboarding with clearer errors, manual pairing-code support, and more reliable host selection after pairing.
    • Improved task-list recovery, reconnect state, host-specific refresh, and thread performance.
    • Improved Codex profile sharing, activity history, and settings layout.
    • Improved goal workflows with a composer shortcut, desktop-aligned goal message actions, and better resumed question handling.
    • Improved assistant message actions, transcript layout, and public rate-limit names.
    • Fixed stuck thread-list swipe actions, duplicate messages when reopening a new thread, spawned subagents appearing as top-level task rows, and misleading connection errors when sending prompts.

  • Usage resets and Browser Developer mode 26.609

    New features

    • Added rate-limit reset banking for Plus and Pro users, including one free reset at launch and referral invitations for earning more during the current promotion. Eligible Business members can invite coworkers to earn shared workspace credits through a separate referral program.
    • Added Developer mode for Browser use in Chrome and the Codex in-app browser. It gives Codex controlled Chrome DevTools Protocol (CDP) access for performance profiling and deeper debugging of network traffic, console output, runtime errors, and page state.
    • Added the /init command to the app composer for creating project instructions with the same initialization workflow as the Codex CLI.
    • Added customizable macOS Dock icons with light and dark Codex variants.
    • Added Computer Use for Enterprise users outside the European Economic Area, the United Kingdom, and Switzerland.
    • Added support for configuring per-app access controls for Computer Use on Windows.
    • Added an Unread chats section to the command menu, with the most recently updated unread chat selected by default.

    Performance improvements and bug fixes

    • Made Browser use up to 2x faster through CDP and DOM snapshot optimizations that reduce browser round trips.
    • Made command, browser, integration, and source activity summaries easier to understand, and improved how completed chats present files, automations, and other durable output.
    • Improved plugin management by including workspace plugins, refreshing plugin state more reliably after installation or removal, and letting you upload a new version of an already-shared plugin without changing its access.
    • Improved usage-limit errors with inline plan and workspace guidance, including reset timing when available.
    • Added Cmd+Enter and Ctrl+Enter as shortcuts for submitting custom approval feedback.
    • Fixed Browser use download handling and improved Developer mode recovery and diagnostics.
    • Fixed scheduled automations so they honor the selected approval mode, and fixed manual project ordering, Browser tab dragging, MCP app sizing after right-pane transitions, and clickable ChatGPT thread mentions.
    • Fixed issues affecting background agent tab restoration, commit and pull request message generation, sidebar pull request status updates, Codex Mobile QR pairing, remote-control MFA, remote SSH installation and connection, updater prompts, and overlay positioning at non-default zoom levels.
    • Additional performance improvements and bug fixes.

  • Codex app 26.608

    New features

    • Added Import to Codex flows for importing supported setup from Claude Code and Claude Cowork, including during onboarding.
    • Revamped plugins screen with separate tabs, marketplace and category filters, keyboard navigation, and clearer install actions.
    • Expanded Settings search to find options from more panels, including Git and pets.

    Performance improvements and bug fixes

    • Fixed goal timer overlap in narrow layouts.
    • Reduced unread notifications while an active goal continues running.
    • Kept review diff ordering consistent with the file tree.
    • Improved window rendering on systems that don’t support translucent backdrops, including Windows 10.
    • Additional performance improvements and bug fixes.

  • ChatGPT for iOS 1.2026.153

    New features

    • Added support for choosing a branch, creating a worktree, and running an environment setup script for new threads.
    • Added a Codex profile screen with usage stats and token activity charts.
    • Added /goal support for creating and managing goals from Codex Mobile.
    • Added inline review comments when viewing changed files.
    • Added support for asking in side chat from selected transcript text.
    • Added support for editing the latest sent prompt.

    Improvements and bug fixes

    • Improved attachment support on Windows hosts.
    • Skills and plugins now appear directly inline in the composer.
    • Improved side chat and queued prompt visibility while a thread is running.
    • Improved message styling, navigation, tool activity, Face ID behavior, archived-thread browsing, and thread UI polish.

  • Codex app updates 26.602

    New features

    • Added activity insights and share cards to the Profile section. You can review Codex usage highlights and save a profile card; sharing is available on consumer ChatGPT plans.

    Performance improvements and bug fixes

    • Improved Computer Use startup readiness and appshot error reporting.
    • Fixed browser and review UI issues, including fullscreen browser composer controls, hex color swatches, terminal scrollbar alignment, and animated diff stat alignment.
    • Expanded onboarding with more role choices so Codex can tailor first-run suggestions more accurately.
    • Fixed configuration writes after plugin installation.
    • Additional performance improvements and bug fixes.

  • Build and deploy websites with Sites

    Sites is now available in preview in the Codex app. Use the Sites plugin to create, save, deploy, and inspect websites, dashboards, internal tools, web apps, and games hosted by OpenAI.

    Open Sites in the app sidebar to return to your projects and manage hosted environment variables and secrets.

    ChatGPT Business workspaces include Sites by default. ChatGPT Enterprise admins can enable Sites for the appropriate roles through role-based access control (RBAC).

  • ChatGPT for iOS 1.2026.146

    New features

    • Added an optional Face ID or passcode lock for Codex.
    • Added a new settings screen for choosing Queue or Steer as the default follow-up behavior and toggling line wrapping for code diffs.
    • Added support for connecting to Windows machines over SSH.

    Improvements and bug fixes

    • Added support for /side <prompt> to start a side conversation with an initial question.
    • Improved follow-up prompts, the Codex home screen, and viewing changed files.
    • Fixed issues with reconnecting, archiving threads, loading tasks, and connecting to hosts.

  • Use Codex with Amazon Bedrock

    Codex can now use supported OpenAI models available through Amazon Bedrock. Configure Amazon Bedrock as your model provider to run Codex locally with AWS-managed authentication, account controls, and billing.

  • Terminal placement controls 26.601

    New features

    • Added Default terminal location in General settings. When the bottom panel is enabled, choose whether the terminal shortcut and environment actions open terminal tabs in the bottom panel or the right panel.

    Performance improvements and bug fixes

    • Additional performance improvements and bug fixes.

May 2026

  • Computer use and mobile access on Windows 26.527

    New features

    • Computer Use now works on Windows. Codex can operate Windows desktop apps by seeing, clicking, and typing in the foreground while it works.
    • Remote control now supports Windows devices. You can start Codex work on a Windows device from ChatGPT on iOS or Android, or from a Mac running Codex, and check its progress remotely.
    • The Profile section now shows your profile details, usage stats, and token activity.
    • Added thread coordination for local projects and worktrees, including separate background threads when explicitly requested.
    • Expanded search for past Codex app threads to include conversation content and Git branch names.
    • Added stable identicons for background subagents across the app.
    • Improved keyboard shortcut settings with keypress search and a reset-all action.
    • Improved Chrome context capture for Google Docs, Sheets, and Slides tabs.

    Performance improvements and bug fixes

    • Additional performance improvements and bug fixes.

  • GPT-5.3-Codex and GPT-5.2 deprecated

    GPT-5.3-Codex and GPT-5.2 are now deprecated as user-selectable models in Codex for users signed in with ChatGPT. API-key workflows aren’t affected.

    Use a current Codex model, such as GPT-5.5, GPT-5.4, or GPT-5.4 mini. See Codex models for model availability and Codex pricing for credit rates.

  • ChatGPT for iOS 1.2026.139

    New features

    • Added Spotlight and Shortcuts support for opening Codex Mobile directly.
    • Added browsing for archived Codex threads.
    • Added /side for opening a side conversation.
    • Added options to save or copy rendered images.

    Improvements and bug fixes

    • Improved iPad keyboard shortcuts.
    • Improved setup and relaunch reliability.
    • Fixed issues with task progress, loading archived threads, previewing code changes, and switching hosts.

  • Appshots, goal mode, and more 26.519

    Appshots are now available in the Codex app on macOS. Press both Command keys to send the frontmost app window to Codex with a screenshot and available text, so Codex can work from context in another app without you copying, pasting, or describing it manually.

    This launch also includes:

    • Goal mode is no longer an experimental feature and is available in the Codex app, IDE extension, and CLI. With Goal mode, you can have Codex drive toward a specific objective for hours or even days.
    • Remote computer use, so Codex can use desktop apps after your Mac locks, including remotely via Codex Mobile. Codex scopes locked use to active, trusted computer use turns and includes safeguards such as short-lived authorization, covered displays, relock on local input, and manual-unlock fallback.
    • Plugin sharing through marketplace sources is available for ChatGPT Business. Enterprise support is coming soon. Teams can distribute reusable plugin bundles that include skills, MCP servers, and lifecycle hooks.
    • Advanced in-app browser annotations let you tweak styling such as font size, colors, and spacing directly using annotations. This gives Codex a clearer signal for changes.
    • Browser-use improvements across in-app browser & Chrome:
      • Codex can now download and extract all image assets from a page much more quickly.
      • Codex can now extract structured data from pages more effectively and find information more quickly with a read-only JS sandbox.
    • Chrome extension will create less clutter when using it. Codex will no longer create tab groups when taking over existing tabs, and at the end of a task for handoff. Instead, it uses tab icons to indicate status.
    • Significantly improved reliability for browser use. We fixed bugs on Windows, flaky availability of the plugin to non geo-blocked regions, and many other issues impacting performance.

  • ChatGPT for iOS 1.2026.132

    New features

    • Added support for opening completed Codex tasks directly from iOS notifications.
    • Added the ability to open changed files directly while reviewing a task.

    Improvements and bug fixes

    • Improved task resume, reconnection, and foreground reliability.
    • Improved task progress updates, code review, and message composition.

  • Work with Codex from anywhere

    You can now use Codex from the ChatGPT mobile app by connecting it to a Mac running the Codex app. Codex runs from the connected host, so the same projects, files, credentials, plugins, skills, and configuration are available from your phone.

    See Remote connections for mobile setup, choosing a host, what comes from the connected machine, and SSH hosts. This launch also includes Hooks general availability, Codex access tokens for trusted automation, and Enterprise admin setup guidance.

  • Expanded Auto-review documentation

    Added a dedicated Auto-review page covering the reviewer lifecycle, trigger conditions, failure behavior, and local or managed configuration.

    Also updated the Agent approvals & security and Sandbox docs so they explain more clearly how Auto-review relates to the sandbox boundary.

  • Codex app 26.506

    New features

    • Added an in-app trust review flow for hooks and kept Hooks settings reachable even before hooks are fully configured.

    Performance improvements and bug fixes

    • Restored tooltip-wrapped dropdowns that could stop opening after the tooltip rewrite.
    • Preserved in-progress message edits across thread switches.
    • Fixed several desktop workflow regressions, including Ctrl+V paste in the Windows terminal, opening modified external links outside the in-app browser, and keeping feedback slash commands attached to the right thread.
    • Improved loading and panel polish by showing model loading while a thread resumes, hiding unavailable model controls during load, and bundling summary-panel layout and hover fixes.
    • Kept the Computer Use settings control visible even when uninstalled and disabled problematic extension hover panels.
    • Additional performance improvements and bug fixes.

  • Codex for Chrome

    With the new extension for Chrome, Codex is even better at working with apps and websites in your browser. It works in parallel across tabs in the background without taking over your browser, and you stay in control of which websites Codex can use.

    Learn more in the Codex Chrome extension documentation.

  • Codex analytics governance docs update

    Updated the Codex enterprise governance guide with more detailed coverage of the Analytics dashboard charts, data export options, and enterprise Analytics API endpoints.

  • Create Codex access tokens

    ChatGPT Enterprise workspace owners and admins can allow permitted members to create Codex access tokens for trusted, non-interactive Codex local workflows. Members can use access tokens to run Codex from scripts, schedulers, and private CI runners with their ChatGPT workspace identity.

    Learn more in Access tokens.

  • Codex app 26.429

    New features

    • Added dictation cleanup plus a configurable dictation dictionary for names, file paths, and code symbols.
    • Added zoom and download controls to the image lightbox.

    Performance improvements and bug fixes

    • Improved voice and dictation error messages for microphone, connection, and quota failures.
    • Fixed in-app browser comment markers so they stay aligned across scrolling, zoom, and responsive layout changes.
    • Made pull request creation and recovery flows more reliable by preserving newly created pull request state, classifying more app-server failures as restart-required, and stopping exhausted remote reconnect loops.
    • Additional performance improvements and bug fixes.

April 2026

  • Codex app 26.423

    New features

    • Added a tooltip on realtime delegation messages to clarify that Codex uses the surrounding voice conversation as context.

    Performance improvements and bug fixes

    • Fixed search in long review files so next and previous results reliably jump to off-screen matches.
    • Kept embedded MCP app panels from restarting or losing state during fullscreen changes and thread reloads.
    • Fixed several desktop regressions, including tray crashes when the local connection is missing, duplicate macOS fullscreen menu entries, and broken global dictation hotkeys on older macOS versions.
    • Additional performance improvements and bug fixes.

  • GPT-5.5 and Codex app updates

    GPT-5.5 is now available in Codex as OpenAI’s newest frontier model for complex coding, computer use, knowledge work, and research workflows.

    GPT-5.5 in Codex

    GPT-5.5 is the recommended choice for most Codex tasks when it appears in your model picker. It’s especially useful for implementation, refactors, debugging, testing, validation, and knowledge-work artifacts.

    To switch to GPT-5.5:

    • In the CLI, start a new thread with: 
      codex --model gpt-5.5
      Or use /model during a session.
    • In the IDE extension, choose GPT-5.5 from the model selector in the composer.
    • In the Codex app, choose GPT-5.5 from the model selector in the composer.

    If you don’t see GPT-5.5 yet, update the CLI, IDE extension, or Codex app to the latest version. During the rollout, continue using GPT-5.4 if GPT-5.5 is not yet available.

    Browser use in the Codex app

    The Codex app can now let Codex operate the in-app browser for local development servers and file-backed pages. Ask Codex to use the browser when it needs to click through a rendered UI, reproduce a visual bug, or verify a local fix inside the app.

    Browser use runs through the bundled Browser plugin. In settings, you can manage the plugin and review allowed or blocked websites.

    Automatic approval reviews

    Codex can route eligible approval prompts through an automatic reviewer agent before the request runs. When configured, the Codex app shows an automatic review item with the review status and risk level, so you can see whether the reviewer approved, denied, stopped, or timed out before deciding.

  • Codex app 26.417

    New features

    • Added local branch search and non-image file pasting in the composer.
    • Added collapsible sidebar sections, tray usage-limit surfacing, and a command-palette theme switcher.

    Performance improvements and bug fixes

    • Made review faster and more stable with better diff batching and preserved diff and search state.
    • Fixed projectless cwd and permissions handling, default file opening, spreadsheet suggestions, and remote-control reconnect issues.
    • Additional performance improvements and bug fixes.

  • Codex can now help with more of your work 26.415

    Codex is becoming a broader workspace for getting work done with AI. This update makes it easier to start work with less setup, verify what Codex is building, create richer outputs, and keep momentum across longer-running tasks.

    Verify more of your work

    The Codex app now includes an early in-app browser. You can open local or public pages that don’t require sign-in, comment directly on the rendered page, and ask Codex to address page-level feedback.

    Computer use lets Codex operate macOS apps by seeing, clicking, and typing, which helps with native app testing, simulator flows, low-risk app settings, and GUI-only bugs.

    The feature isn’t available in the European Economic Area, the United Kingdom, or Switzerland at launch.

    Start, follow, and steer work

    Chats are threads you can start without choosing a project folder first. They’re useful for research, writing, planning, analysis, source gathering, and tool-driven work that doesn’t begin in a codebase.

    For work that needs a later check-in, thread automations can wake up the same thread on a schedule while preserving the conversation context. Use them to check a long-running process, watch for updates, or continue a follow-up loop without starting from scratch.

    The task sidebar makes plans, sources, generated artifacts, and summaries easier to follow while Codex works. Context-aware suggestions can also help you pick up relevant follow-ups when you start or return to Codex.

    Stronger for software development

    Codex now brings more of the pull request workflow into the app. You can inspect GitHub pull requests in the sidebar, review comments in the diff, review changed files, then ask Codex to explain feedback, make changes, check them, and keep the review moving.

    Review richer outputs

    The artifact viewer can preview generated files such as PDF files, spreadsheets, documents, and presentations in the sidebar before you commit or share them. Memories, where available, can also carry useful context from past tasks into future threads, including stable preferences, project conventions, and recurring work patterns.

    Other features

  • Codex app 26.410

    New features

    • Added command-menu file search, including Cmd+P routing into workspace file search.
    • Added rich previews in the sidebar file viewer for images, PDFs, and Markdown.
    • Added terminal tabs per thread, a selected-text Ask Codex overlay, and a Help menu feedback entry.

    Performance improvements and bug fixes

    • Improved review diff whitespace handling and search highlighting.
    • Fixed in-app browser address bar and external-open issues, plus several file viewer and side-panel bugs.
    • Additional performance improvements and bug fixes.

  • Codex app 26.409

    New features

    • Added Windows Store updater support.
    • Expanded pull request workflows with an activity timeline, PR-page commenting, and push choices in the push modal.
    • Added workspace file tabs in the thread side panel, drag-and-drop tab reordering, run action editing, and a logout confirmation dialog.

    Performance improvements and bug fixes

    • Improved pull request board performance and comment flyouts.
    • Improved update and navigation resilience, and fixed projectless visibility, unread-state, and pinned-row edge cases.
    • Additional performance improvements and bug fixes.

  • Codex app 26.406

    New features

    • Added collapsible inline review comments and inline or detached review modes.
    • Added a Git summary and Sources section in the thread side panel.
    • Added a New Quick Chat command and local video embeds in the app.

    Performance improvements and bug fixes

    • Preserved thread scroll position per conversation and unread state across windows.
    • Improved review refresh reliability, and fixed dictation loss, right-panel reset, and GitHub reconnect messaging.
    • Additional performance improvements and bug fixes.

  • Codex model availability update

    We’re updating model availability for users who sign in with ChatGPT. Starting April 7, the model picker no longer shows gpt-5.2-codex, gpt-5.1-codex-mini, gpt-5.1-codex-max, gpt-5.1-codex, gpt-5.1, or gpt-5. On April 14, we’ll remove those models from Codex for ChatGPT sign-in.

    Users can still choose from gpt-5.4, gpt-5.4-mini, gpt-5.3-codex, and gpt-5.2. ChatGPT Pro users can also choose gpt-5.3-codex-spark.

    To use another API-supported model in Codex, sign in with an API key or configure a model provider.

  • Codex app 26.325, 26.331, 26.401

    New features

    • Added workspace settings to the app.
    • Added “Don’t ask again” handling and polish for custom MCP approval panels.
    • Added native Windows updater support, including MSIX support, plus a Windows system tray menu so Codex can stay resident after the last window closes.
    • Added app and file @ mentions in the automation composer, surfaced subagent diff stats in the composer, and added artifact cards for generated file citations.
    • Added a Quick Chat app-menu shortcut, a review file tree open menu, early heartbeat automation affordances in threads, and image support for remote connections.

    Performance improvements and bug fixes

    • Fixed review panel scroll jumps and PR status actions while a conversation is still running.
    • Fixed several multi-window issues, plus @-mention results, duplicate project labeling, Windows runGit behavior, and revert, unstage, and stage-all actions.
    • Improved remote-thread and sidebar polish, Windows update recovery, unsupported-version guidance, and overall thread search speed.
    • Fixed sticky review issues such as diff hunk expansion, header overlap, archive-thread crashes, and window-zoom shell sizing.
    • Additional performance improvements and bug fixes.

March 2026

  • Build and install plugins in Codex

    Codex now supports plugins: installable bundles that package skills, app integrations, and MCP server configuration for reusable workflows.

    Plugins are available in the Codex app, CLI, and IDE extensions.

    You can install curated plugins from the plugin directory, or scaffold a local plugin with @plugin-creator and test it with workspace-scoped or home-scoped marketplaces.

    Learn more in the plugins documentation.

    Plugin structure

    Every plugin is a folder with a required .codex-plugin/plugin.json manifest and optional supporting files:

    my-plugin/
  .codex-plugin/
    plugin.json   # Required: plugin manifest
  skills/         # Optional: packaged skills
  .app.json       # Optional: app or connector mappings
  .mcp.json       # Optional: MCP server configuration
  assets/         # Optional: icons, logos, screenshots

    Install plugins per-user or per-repo

    You can install plugins for just yourself with ~/.agents/plugins/marketplace.json and ~/.codex/plugins/, or for everyone on a project with .agents/plugins/marketplace.json and a repo-local plugin directory such as ./plugins/.

    Curated plugins and local development

    Codex surfaces curated public plugins in the plugin directory. Codex also ships with the built-in @plugin-creator skill to help you scaffold a plugin, add a local marketplace entry, and test it before sharing it with teammates.

  • Codex app 26.324

    New features

    • Redesigned the skills and plugins browse and manage pages.
    • Added per-window zoom and a clearer edited-files state in review.
    • Added automation titles and icons in the sidebar, plus bundled Raycast themes.

    Performance improvements and bug fixes

    • Kept loaded threads and projects visible during reconnects and made navigation feel faster.
    • Fixed archive freezes, markdown wrapping, hotkey-window regressions, and several permissions, terminal, and worktree issues.
    • Additional performance improvements and bug fixes.

  • Codex app 26.323

    New features

    • Added search for past Codex app threads, including a sidebar shortcut and keyboard shortcuts for jumping to recent threads.
    • Added a one-click option to archive all local threads in a project.
    • Synced key settings between the Codex app and the VS Code extension, and added a settings entry point in the extension.

    Performance improvements and bug fixes

    • Additional performance improvements and bug fixes.

  • Codex app 26.320

    New features

    • Added Floating Composer v2.
    • Added terminal shortcuts for jumping by word and line.
    • Improved plugin discovery surfaces and file-path rendering for saved images.

    Performance improvements and bug fixes

    • Fixed sidebar crashes when subagent turn items are missing.
    • Fixed pop-out thread routing and preserved local paths for composer image attachments.
    • Additional performance improvements and bug fixes.

  • Codex app 26.318, 26.319

    New features

    • Added skills to the @ menu so you can insert them from the composer alongside other mentions.
    • Cmd/Ctrl+F now starts with your current text selection, which makes searching reviews and diffs faster, alongside broader review navigation improvements such as a refreshed file tree and percentage-based file tree resizing.
    • Added a branded loading shimmer while the app starts.

    Performance improvements and bug fixes

    • Improved collapsed diff summaries in review.
    • Fixed slash-command focus and composer alignment issues, and polished plugin cards and step details.
    • Additional performance improvements and bug fixes.

  • Codex app 26.317

    New features

    • You can now fork a conversation from an earlier message, not just the latest turn.
    • Added slash commands for switching models and reasoning levels, and made slash commands work in the middle of a draft prompt.
    • Added notifications for plan mode questions so it’s easier to notice when Codex needs input.

    Performance improvements and bug fixes

    • Fixed thread handoff and subagent navigation issues across worktrees and the VS Code extension.
    • Additional performance improvements and bug fixes.

  • Introducing GPT-5.4 mini in Codex

    GPT-5.4 mini is now available in Codex as a fast, efficient model for lighter coding tasks and subagents.

    It improves over GPT-5 mini across coding, reasoning, image understanding, and tool use while running more than 2x faster. In Codex, GPT-5.4 mini uses 30% as much of your included limits as GPT-5.4, so comparable tasks can last about 3.3x longer before you hit those limits.

    GPT-5.4 mini is available in the Codex app, the CLI, the IDE extension, and Codex on the web. GPT-5.4 mini is also available in the API.

    Use GPT-5.4 mini for codebase exploration, large-file review, processing supporting documents, and other less reasoning-intensive subagent work. For more complex planning, coordination, and final judgment, start with GPT-5.4.

    To switch to GPT-5.4 mini:

    • In the CLI, start a new thread with: 
      codex --model gpt-5.4-mini
      Or use /model during a session.
    • In the IDE extension, choose GPT-5.4 mini from the model selector in the composer.
    • In the Codex app, choose GPT-5.4 mini from the model selector in the composer.

    If you don’t see GPT-5.4 mini yet, update the CLI, IDE extension, or Codex app to the latest version.

  • Codex app 26.313

    New features

    • Added back and forward buttons in the header so you can move between recent screens more quickly.
    • Added an Open in Finder, Open in Explorer, or Open in File Manager action from thread menus to jump straight to a thread’s project folder.

    Performance improvements and bug fixes

    • Improved resume and thread error toasts with clearer details when something goes wrong.
    • Additional performance improvements and bug fixes.

  • Codex app 26.312

    Themes

    Change the Codex app appearance in Settings by choosing a base theme, adjusting accent, background, and foreground colors, and changing the UI and code fonts. You can also share your custom theme with friends.

    Revamped Automations

    You can now choose whether automations run locally or on a worktree, define custom reasoning levels and models, and use templates to find inspiration for new automations.

    Performance improvements and bug fixes

    Various bug fixes and performance improvements.

  • Codex app 26.311

    New features

    • Codex can now read the integrated terminal for the current thread, so it can check the status of a running development server or refer back to failed build output while it works with you.

    Performance improvements and bug fixes

    • Additional performance improvements and bug fixes.

  • Introducing GPT-5.4 in Codex

    GPT-5.4 is now available in Codex as OpenAI’s most capable and efficient frontier model for professional work.

    It combines recent advances in reasoning, coding, and agentic workflows in one model, and it’s the recommended choice for most Codex tasks.

    In Codex, GPT-5.4 is the first general-purpose model with native computer-use capabilities. GPT-5.4 in Codex includes experimental support for the 1M context window. It supports complex workflows across applications and long-horizon tasks, with stronger tool use and tool search that help agents find and use the right tools more efficiently.

    GPT-5.4 is available everywhere you can use Codex: the Codex app, the CLI, the IDE extension, and Codex Cloud on the web. GPT-5.4 is also available in the API.

    To switch to GPT-5.4:

    • In the CLI, start a new thread with: 
      codex --model gpt-5.4
      Or use /model during a session.
    • In the IDE extension, choose GPT-5.4 from the model selector in the composer.
    • In the Codex app, choose GPT-5.4 from the model selector in the composer.

    If you don’t see GPT-5.4 yet, update the CLI, IDE extension, or Codex app to the latest version.

  • Codex app 26.305

    Performance improvements and bug fixes

    • Improved remote connections with clearer connection errors, better status updates, and clearer host labels in thread and settings views.
    • Fixed copy and paste shortcuts in the integrated terminal on Windows.
    • Fixed an issue where archived pinned threads could reappear in the sidebar.
    • Fixed an issue where repeated codex://new links could stop prefilling a new conversation when the app was already open.
    • Additional performance improvements and bug fixes.

  • Codex app 26.304

    Codex app for Windows

    The Codex app is now available on Windows. The app gives you one interface for working across projects, running parallel agent threads, and reviewing results in one place.

    The Codex app runs natively on Windows using PowerShell and a native Windows sandbox for bounded permissions, so you can use Codex on Windows without moving your workflow into WSL, onto a virtual machine, or by deactivating the sandbox.

    The Windows app includes the same core features as the rest of the Codex app:

    • Skills to discover and extend Codex capabilities.
    • Automations to run work in the background.
    • Worktrees to handle independent tasks in the same project.

    If you prefer to develop in WSL, you can also switch the Codex agent and the integrated terminal to run there.

    Download it from the Microsoft Store and sign in with your ChatGPT account or an API key. For setup and configuration details, see Setup, Use WSL with the Codex app, and Customize the app for your development setup.

  • Codex app 26.303

    New features

    • Added a Worktrees setting to turn automatic cleanup of Codex-managed worktrees on or off.
    • Added Handoff support for moving a thread between Local and Worktree.
    • Added an explicit English option in the language menu.

    Performance improvements and bug fixes

    • Improved GitHub and pull request workflows.
    • Improved approval prompts and app connection sign-in flows.
    • Additional performance improvements and bug fixes.

February 2026

  • Codex app 26.228

    Performance improvements and bug fixes

    • Fixed a regression where conversation and task views could stop updating while Codex was streaming a response.
    • Additional performance improvements and bug fixes.

  • Codex app 26.227

    New features

    • Added pull request status badges in task rows and PR buttons, including draft, open, merged, and closed states.
    • Added a Worktrees setting to choose how many Codex-managed worktrees to keep before older ones are cleaned up.

    Performance improvements and bug fixes

    • Improved scrolling and navigation in long conversations and code review, including fixes for thread jumpiness, sidebar jitter, and diff scrolling.
    • Improved app startup reliability and keyboard zoom behavior.
    • Additional performance improvements and bug fixes.

  • Codex app 26.226

    New features

    • Added new MCP shortcuts in the composer, including install keyword suggestions and an MCP server submenu in Add context.
    • Added support for @mentions and skill mentions in inline review comments.

    Performance improvements and bug fixes

    • Improved rendering of MCP tool calls and Mermaid diagram error handling.
    • Fixed an issue where stopped terminal commands could continue appearing as running.
    • Additional performance improvements and bug fixes.

  • Codex app 26.217

    New features

    • Added drag-and-drop support to reorder queued messages.
    • Added a warning when the selected model is downgraded.

    Improvements and bug fixes

    • Improved file workflows with fuzzy file search and better attachment recovery after restart.
    • Additional performance improvements and bug fixes.

  • Introducing GPT-5.3-Codex-Spark

    Today, we’re releasing a research preview of GPT-5.3-Codex-Spark, a smaller version of GPT-5.3-Codex and our first model designed for real-time coding. Codex-Spark is optimized to feel near-instant, delivering more than 1000 tokens per second while remaining highly capable for real-world coding tasks.

    Codex-Spark is available in research preview for ChatGPT Pro users in the latest Codex app, CLI, and IDE extension. This release also marks the first milestone in our partnership with Cerebras.

    At launch, Codex-Spark is text-only with a 128k context window. During the research preview, usage has separate model-specific limits and doesn’t count against standard Codex limits. During high demand, access may slow down or queue while we balance reliability across users.

    To switch to GPT-5.3-Codex-Spark:

    • In the CLI, start a new thread with: 
      codex --model gpt-5.3-codex-spark
      Or use /model during a session.
    • In the IDE extension, choose GPT-5.3-Codex-Spark from the model selector in the composer.
    • In the Codex app, choose GPT-5.3-Codex-Spark from the model selector in the composer.

    If you don’t see GPT-5.3-Codex-Spark yet, update the CLI, IDE extension, or Codex app to the latest version.

    GPT-5.3-Codex-Spark isn’t available in the API at launch. For API-key workflows, continue using gpt-5.2-codex.

  • Codex app 26.212

    New features

    • Support for GPT-5.3-Codex-Spark
    • Added conversation forking
    • Added floating pop-out window to take a conversation with you

    Bug fixes

    • Improved performance and bug fixes

    Alpha testing for the Codex app on Windows is also starting. Sign up here to be a potential alpha tester.

  • Codex app 26.210

    New features

    • Added branch search in the branch picker.
    • Added clearer guidance for entering plan mode when you type plan in the composer.
    • Added support for parallel approvals.

    Improvements and bug fixes

    • Additional performance improvements and bug fixes.

  • GPT-5.3-Codex in Cursor and VS Code

    Starting today, GPT-5.3-Codex is available natively in Cursor and VS Code.

    API access is starting with a small set of customers as part of a phased release.

    This is the first model treated as a high security capability under the Preparedness Framework.

    Safety controls will continue to scale, and API access will expand over the next few weeks.

  • Codex app 26.208

    New features

    • Added MCP and personality actions to the command palette.
    • Updated follow-up behavior to queue by default.

    Improvements and bug fixes

    • Additional performance improvements and bug fixes.

  • Codex app 26.206

    New features

    • Added a file-reference action to reveal files directly in your OS file manager.

    Improvements and bug fixes

    • Improved handling of large reviews by removing the overall diff-size cap in the review pane.
    • Additional performance improvements and bug fixes.

  • Introducing GPT-5.3-Codex

    Today we’re releasing GPT-5.3-Codex, the most capable agentic coding model to date for complex, real-world software engineering.

    GPT-5.3-Codex combines the frontier coding performance of GPT-5.2-Codex with stronger reasoning and professional knowledge capabilities, and runs 25% faster for Codex users. It’s also better at collaboration while the agent is working—delivering more frequent progress updates and responding to steering in real time.

    GPT-5.3-Codex is available with paid ChatGPT plans everywhere you can use Codex: the Codex app, the CLI, the IDE extension, and Codex Cloud on the web. API access for the model will come soon.

    To switch to GPT-5.3-Codex:

    • In the CLI, start a new thread with: 
      codex --model gpt-5.3-codex
      Or use /model during a session.
    • In the IDE extension, make sure you are signed in with ChatGPT, then choose GPT-5.3-Codex from the model selector in the composer.
    • In the Codex app, make sure you are signed in with ChatGPT, then choose GPT-5.3-Codex from the model selector in the composer.
    • If you don’t see GPT-5.3-Codex, update the CLI, IDE extension, or Codex app to the latest version.

    For API-key workflows, continue using gpt-5.2-codex while API support rolls out.

  • Codex app 26.205

    New features

    • Support for GPT-5.3-Codex.
    • Added mid-turn steering. Submit a message while Codex is working to direct its behavior.
    • Attach or drop any file type.

    Bug fixes

    • Fix flickering of the app.

  • Codex app 26.204

    New features

    • Added Zed and Textmate as options to open files and folders.
    • Added PDF preview in the review panel.

    Bug fixes

    • Performance improvements.

  • Codex app 26.203

    New features

    • Added thread renaming on double-click in the thread list.

    Improvements and bug fixes

    • Renamed Sync to Handoff and added clearer source/destination stats in the handoff UI.
    • Additional performance improvements and bug fixes.

  • Introducing the Codex app

    Codex app

    The Codex app for macOS is a desktop interface for running agent threads in parallel and collaborating with agents on long-running tasks. It includes a project sidebar, thread list, and review pane for tracking work across projects.

    Key features:

    For a limited time, ChatGPT Free and Go include Codex, and Plus, Pro, Business, Enterprise, and Edu plans get double rate limits. Those higher limits apply in the app, the CLI, your IDE, and the cloud.

    Learn more in the Introducing the Codex app blog post.

    Check out the Codex app documentation for more.

    Get started with the Codex app

January 2026

  • Web search is now enabled by default

    Codex now enables web search for local tasks in the Codex CLI and IDE Extension. By default, Codex uses a web search cache, which is an OpenAI-maintained index of web results. Cached mode returns pre-indexed results instead of fetching live pages, while live mode fetches the most recent data from the web. If you are using --yolo or another full access sandbox setting, web search defaults to live results. To disable this behavior or switch modes, use the web_search configuration option:

    • web_search = "cached" (default; serves results from the web search cache)
    • web_search = "live" (fetches the most recent data from the web; same as --search)
    • web_search = "disabled" to remove the tool

    To learn more, check out the configuration documentation.

  • Team Config for shared configuration

    Team Config groups the files teams use to standardize Codex across repositories and machines. Use it to share:

    • config.toml defaults
    • rules/ for command controls outside the sandbox
    • skills/ for reusable workflows

    Codex loads these layers from .codex/ folders in the current working directory, parent folders, and the repo root, plus user (~/.codex/) and system (/etc/codex/) locations. Higher-precedence locations override lower-precedence ones.

    Admins can still enforce constraints with requirements.toml, which overrides defaults regardless of location.

    Learn more in Team Config.

  • Custom prompts deprecated

    Custom prompts are now deprecated. Use skills for reusable instructions and workflows instead.

  • GPT-5.2-Codex API availability

    GPT-5.2-Codex is now available in the API and for users who sign into Codex with the API.

    To learn more about using GPT-5.2-Codex check out our API documentation.

December 2025

  • Agent skills in Codex

    Codex now supports agent skills: reusable bundles of instructions (plus optional scripts and resources) that help Codex reliably complete specific tasks.

    Skills are available in both the Codex CLI and IDE extensions.

    You can invoke a skill explicitly by typing $skill-name (for example, $skill-installer or the experimental $create-plan skill after installing it), or let Codex select a skill automatically based on your prompt.

    Learn more in the skills documentation.

    Folder-based standard (agentskills.io)

    Following the open agent skills specification, a skill is a folder with a required SKILL.md and optional supporting files:

    my-skill/
  SKILL.md       # Required: instructions + metadata
  scripts/       # Optional: executable code
  references/    # Optional: documentation
  assets/        # Optional: templates, resources

    Install skills per-user or per-repo

    You can install skills for just yourself in ~/.codex/skills, or for everyone on a project by checking them into .codex/skills in the repository.

    Codex also ships with a few built-in system skills to get started, including $skill-creator and $skill-installer. The $create-plan skill is experimental and needs to be installed (for example: $skill-installer install the create-plan skill from the .experimental folder).

    Curated skills directory

    Codex ships with a small curated set of skills inspired by popular workflows at OpenAI. Install them with $skill-installer, and expect more over time.

  • Introducing GPT-5.2-Codex

    Today we are releasing GPT-5.2-Codex, the most advanced agentic coding model yet for complex, real-world software engineering.

    GPT-5.2-Codex is a version of GPT-5.2 further optimized for agentic coding in Codex, including improvements on long-horizon work through context compaction, stronger performance on large code changes like refactors and migrations, improved performance in Windows environments, and significantly stronger cybersecurity capabilities.

    Starting today, the CLI and IDE Extension will default to gpt-5.2-codex for users who are signed in with ChatGPT. API access for the model will come soon.

    If you have a model specified in your config.toml configuration file, you can instead try out gpt-5.2-codex for a new Codex CLI session using:

    codex --model gpt-5.2-codex

    You can also use the /model slash command in the CLI. In the Codex IDE Extension you can select GPT-5.2-Codex from the dropdown menu.

    If you want to switch for all sessions, you can change your default model to gpt-5.2-codex by updating your config.toml configuration file:

    model = "gpt-5.2-codex”

  • Introducing Codex for Linear

    Assign or mention @Codex in an issue to kick-off a Codex cloud task. As Codex works, it posts updates back to Linear, providing a link to the completed task so you can review, open a PR, or keep working.

    Screenshot of a successful Codex task started in Linear

    To learn more about how to connect Codex to Linear both locally through MCP and through the new integration, check out the Codex for Linear documentation.

November 2025

  • Usage and credits fixes

    Minor updates to address a few issues with Codex usage and credits:

    • Adjusted all usage dashboards to show “limits remaining” for consistency. The CLI previously displayed “limits used.”
    • Fixed an issue preventing users from buying credits if their ChatGPT subscription was purchased via iOS or Google Play.
    • Fixed an issue where the CLI could display stale usage information; it now refreshes without needing to send a message first.
    • Optimized the backend to help smooth out usage throughout the day, irrespective of overall Codex load or how traffic is routed. Before, users could get unlucky and hit a few cache misses in a row, leading to much less usage.

  • Introducing GPT-5.1-Codex-Max

    Today we are releasing GPT-5.1-Codex-Max, our new frontier agentic coding model.

    GPT‑5.1-Codex-Max is built on an update to our foundational reasoning model, which is trained on agentic tasks across software engineering, math, research, and more. GPT‑5.1-Codex-Max is faster, more intelligent, and more token-efficient at every stage of the development cycle–and a new step towards becoming a reliable coding partner.

    Starting today, the CLI and IDE Extension will default to gpt-5.1-codex-max for users that are signed in with ChatGPT. API access for the model will come soon.

    For non-latency-sensitive tasks, we’ve also added a new Extra High (xhigh) reasoning effort, which lets the model think for an even longer period of time for a better answer. We still recommend medium as your daily driver for most tasks.

    If you have a model specified in your config.toml configuration file, you can instead try out gpt-5.1-codex-max for a new Codex CLI session using:

    codex --model gpt-5.1-codex-max

    You can also use the /model slash command in the CLI. In the Codex IDE Extension you can select GPT-5.1-Codex from the dropdown menu.

    If you want to switch for all sessions, you can change your default model to gpt-5.1-codex-max by updating your config.toml configuration file:

    model = "gpt-5.1-codex-max”

  • Introducing GPT-5.1-Codex and GPT-5.1-Codex-Mini

    Along with the GPT-5.1 launch in the API, we are introducing new gpt-5.1-codex-mini and gpt-5.1-codex model options in Codex, a version of GPT-5.1 optimized for long-running, agentic coding tasks and use in coding agent harnesses in Codex or Codex-like harnesses.

    Starting today, the CLI and IDE Extension will default to gpt-5.1-codex on macOS and Linux and gpt-5.1 on Windows.

    If you have a model specified in your config.toml configuration file, you can instead try out gpt-5.1-codex for a new Codex CLI session using:

    codex --model gpt-5.1-codex

    You can also use the /model slash command in the CLI. In the Codex IDE Extension you can select GPT-5.1-Codex from the dropdown menu.

    If you want to switch for all sessions, you can change your default model to gpt-5.1-codex by updating your config.toml configuration file:

    model = "gpt-5.1-codex”

  • Introducing GPT-5-Codex-Mini

    Today we are introducing a new gpt-5-codex-mini model option to Codex CLI and the IDE Extension. The model is a smaller, more cost-effective, but less capable version of gpt-5-codex that provides approximately 4x more usage as part of your ChatGPT subscription.

    Starting today, the CLI and IDE Extension will automatically suggest switching to gpt-5-codex-mini when you reach 90% of your 5-hour usage limit, to help you work longer without interruptions.

    You can try the model for a new Codex CLI session using:

    codex --model gpt-5-codex-mini

    You can also use the /model slash command in the CLI. In the Codex IDE Extension you can select GPT-5-Codex-Mini from the dropdown menu.

    Alternatively, you can change your default model to gpt-5-codex-mini by updating your config.toml configuration file:

    model = "gpt-5-codex-mini”

  • GPT-5-Codex model update

    We’ve shipped a minor update to GPT-5-Codex:

    • More reliable file edits with apply_patch.
    • Fewer destructive actions such as git reset.
    • More collaborative behavior when encountering user edits in files.
    • 3% more efficient in time and usage.

October 2025

  • Credits on ChatGPT Pro and Plus

    Codex users on ChatGPT Plus and Pro can now use on-demand credits for more Codex usage beyond what’s included in your plan. Learn more.

  • Tag @Codex on GitHub Issues and PRs

    You can now tag @codex on a teammate’s pull request to ask clarifying questions, request a follow-up, or ask Codex to make changes. GitHub Issues now also support @codex mentions, so you can kick off tasks from any issue, without leaving your workflow.

    Codex responding to a GitHub pull request and issue after an @Codex mention.

  • Codex is now GA

    Codex is now generally available with 3 new features — @Codex in Slack, Codex SDK, and new admin tools.

    @Codex in Slack

    You can now questions and assign tasks to Codex directly from Slack. See the Slack guide to get started.

    Codex SDK

    Integrate the same agent that powers the Codex CLI inside your own tools and workflows with the Codex SDK in Typescript. With the new Codex GitHub Action, you can easily add Codex to CI/CD workflows. See the Codex SDK guide to get started.

    import { Codex } from "@openai/codex-sdk";

const agent = new Codex();
const thread = await agent.startThread();

const result = await thread.run("Explore this repo");
console.log(result);

const result2 = await thread.run("Propose changes");
console.log(result2);

    New admin controls and analytics

    ChatGPT workspace admins can now edit or delete Codex Cloud environments. With managed config files, they can set safe defaults for CLI and IDE usage and monitor how Codex uses commands locally. New analytics dashboards help you track Codex usage and code review feedback. Learn more in the enterprise admin guide.

    Availability and pricing updates

    The Slack integration and Codex SDK are available to developers on ChatGPT Plus, Pro, Business, Edu, and Enterprise plans starting today, while the new admin features will be available to Business, Edu, and Enterprise. Beginning October 20, Codex Cloud tasks will count toward your Codex usage. Review the Codex pricing guide for plan-specific details.

September 2025

  • GPT-5-Codex in the API

    GPT-5-Codex is now available in the Responses API, and you can also use it with your API Key in the Codex CLI. We plan on regularly updating this model snapshot. It is available at the same price as GPT-5. You can learn more about pricing and rate limits for this model on our model page.

  • Introducing GPT-5-Codex

    New model: GPT-5-Codex

    codex-switch-model

    GPT-5-Codex is a version of GPT-5 further optimized for agentic coding in Codex. It’s available in the IDE extension and CLI when you sign in with your ChatGPT account. It also powers the cloud agent and Code Review in GitHub.

    To learn more about GPT-5-Codex and how it performs compared to GPT-5 on software engineering tasks, see our announcement blog post.

    Image outputs

    codex-image-outputs

    When working in the cloud on front-end engineering tasks, GPT-5-Codex can now display screenshots of the UI in Codex web for you to review. With image output, you can iterate on the design without needing to check out the branch locally.

    New in Codex CLI

    • You can now resume sessions where you left off with codex resume.
    • Context compaction automatically summarizes the session as it approaches the context window limit.

    Learn more in the latest release notes

August 2025

  • Late August update

    IDE extension (Compatible with VS Code, Cursor, Windsurf)

    Codex now runs in your IDE with an interactive UI for fast local iteration. Easily switch between modes and reasoning efforts.

    Sign in with ChatGPT (IDE & CLI)

    One-click authentication that removes API keys and uses ChatGPT Enterprise credits.

    Move work between local ↔ cloud

    Hand off tasks to Codex web from the IDE with the ability to apply changes locally so you can delegate jobs without leaving your editor.

    Code Reviews

    Codex goes beyond static analysis. It checks a PR against its intent, reasons across the codebase and dependencies, and can run code to validate the behavior of changes.

  • Mid August update

    Image inputs

    You can now attach images to your prompts in Codex web. This is great for asking Codex to implement frontend changes or follow up on whiteboarding sessions.

    Container caching

    Codex now caches containers to start new tasks and followups 90% faster, dropping the median start time from 48 seconds to 5 seconds. You can optionally configure a maintenance script to update the environment from its cached state to prepare for new tasks. See the docs for more.

    Automatic environment setup

    Now, environments without manual setup scripts automatically run the standard installation commands for common package managers like yarn, pnpm, npm, go mod, gradle, pip, poetry, uv, and cargo. This reduces test failures for new environments by 40%.

June 2025

  • Best of N

    Codex can now generate multiple responses simultaneously for a single task, helping you quickly explore possible solutions to pick the best approach.

    Fixes & improvements

    • Added some keyboard shortcuts and a page to explore them. Open it by pressing ⌘-/ on macOS and Ctrl+/ on other platforms.

    • Added a “branch” query parameter in addition to the existing “environment”, “prompt” and “tab=archived” parameters.

    • Added a loading indicator when downloading a repo during container setup.

    • Added support for cancelling tasks.

    • Fixed issues causing tasks to fail during setup.

    • Fixed issues running followups in environments where the setup script changes files that are gitignored.

    • Improved how the agent understands and reacts to network access restrictions.

    • Increased the update rate of text describing what Codex is doing.

    • Increased the limit for setup script duration to 20 minutes for Pro and Business users.

    • Polished code diffs: You can now option-click a code diff header to expand/collapse all of them.

  • June update

    Agent internet access

    Now you can give Codex access to the internet during task execution to install dependencies, upgrade packages, run tests that need external resources, and more.

    Internet access is off by default. Plus, Pro, and Business users can enable it for specific environments, with granular control of which domains and HTTP methods Codex can access. Internet access for Enterprise users is coming soon.

    Learn more about usage and risks in the docs.

    Update existing PRs

    Now you can update existing pull requests when following up on a task.

    Voice dictation

    Now you can dictate tasks to Codex.

    Fixes & improvements

    • Added a link to this changelog from the profile menu.

    • Added support for binary files: When applying patches, all file operations are supported. When using PRs, only deleting or renaming binary files is supported for now.

    • Fixed an issue on iOS where follow up tasks where shown duplicated in the task list.

    • Fixed an issue on iOS where pull request statuses were out of date.

    • Fixed an issue with follow ups where the environments were incorrectly started with the state from the first turn, rather than the most recent state.

    • Fixed internationalization of task events and logs.

    • Improved error messages for setup scripts.

    • Increased the limit on task diffs from 1 MB to 5 MB.

    • Increased the limit for setup script duration from 5 to 10 minutes.

    • Polished GitHub connection flow.

    • Re-enabled Live Activities on iOS after resolving an issue with missed notifications.

    • Removed the mandatory two-factor authentication requirement for users using SSO or social logins.

May 2025

  • Reworked environment page

    It’s now easier and faster to set up code execution.

    Fixes & improvements

    • Added a button to retry failed tasks

    • Added indicators to show that the agent runs without network access after setup

    • Added options to copy git patches after pushing a PR

    • Added support for unicode branch names

    • Fixed a bug where secrets were not piped to the setup script

    • Fixed creating branches when there’s a branch name conflict.

    • Fixed rendering diffs with multi-character emojis.

    • Improved error messages when starting tasks, running setup scripts, pushing PRs, or disconnected from GitHub to be more specific and indicate how to resolve the error.

    • Improved onboarding for teams.

    • Polished how new tasks look while loading.

    • Polished the followup composer.

    • Reduced GitHub disconnects by 90%.

    • Reduced PR creation latency by 35%.

    • Reduced tool call latency by 50%.

    • Reduced task completion latency by 20%.

    • Started setting page titles to task names so Codex tabs are easier to tell apart.

    • Tweaked the system prompt so that agent knows it’s working without network, and can suggest that the user set up dependencies.

    • Updated the docs.

  • Codex in the ChatGPT iOS app

    Start tasks, view diffs, and push PRs—while you’re away from your desk.