Codex
Codex is a powerful coding agent that helps developers build faster and more confidently. Use it in the terminal, IDE, GitHub, or the cloud to ship new features, fix bugs, review code, and more.
Available in ChatGPT Plus, Pro, Business, Edu, and Enterprise
One agent for everywhere you code — connected by your ChatGPT account
Codex CLI
Open-source coding agent that runs in your terminal that’s purpose-built to harness the agentic coding capabilities of GPT-5-Codex.
Codex IDE extension
Brings the same agent that powers the Codex CLI into VS Code, Cursor, and other compatible IDEs, so you can preview local changes and edit code alongside Codex seamlessly.
Codex cloud
An asynchronous cloud agent that works independently. It runs tasks in a sandbox with your repo and environment preloaded, generating PRs you can merge or pull down to your computer to keep working.
Codex in Slack
Tag @Codex in Slack to answer questions, fix bugs, and explore ideas right from team conversations. It automatically pulls context from the conversation to pick the right repo and start working.
How it works
Download the Codex CLI or IDE extension and sign in with your ChatGPT account.
More features in Codex
Pair programming
Collaborate with Codex in real time in your IDE or terminal to build new features, investigate bugs, improve code quality, brainstorm solutions, and more.
Task delegation
Hand-off tasks to Codex so you can stay in flow and focused on high priority work. It generates edits you can review, accept, or use as a starting point to keep working.
Code review
Set up Codex to automatically review new PRs and tag @codex to start tasks in Codex cloud—all directly from GitHub.