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Audio Models Art card 16.9
Introducing next-generation audio models in the API

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CoT Monitoring > Cover image > Media
Detecting misbehavior in frontier reasoning models

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GPT-4.5 system card
OpenAI GPT-4.5 System Card

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GPT-4.5
Introducing GPT-4.5

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LHT System Card 1.1
Deep research System Card

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SWElancer card 1.1
Introducing the SWE-Lancer benchmark

Publication

model spec v2 > cover image
Sharing the latest Model Spec

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Introducing deep research

Release

o3-mini system card > cover image
OpenAI o3-mini System Card

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