New model
Released GPT-5.2, the newest flagship model in the GPT-5 model family.New model
Released gpt-5.1-codex-max to the Responses API.Feature
Introducing Codex for LinearFeature
Introducing GPT-5.1-Codex-MaxNew model
Released GPT-5.1, the newest flagship model in the GPT-5 model family.New model
Released gpt-5.1-codex and gpt-5.1-codex-mini to the Responses API.Feature
Introducing GPT-5.1-Codex and GPT-5.1-Codex-MiniFeature
Introducing GPT-5-Codex-MiniFeature
GPT-5-Codex model updateFeature
Credits on ChatGPT Pro and PlusFeature
Tag @Codex on GitHub Issues and PRsFeature
Codex is now GANew model
GPT-5-Codex in the APIFeature
Introducing GPT-5-CodexNew model
Released GPT-5 family of models in the API, including gpt-5, gpt-5-mini, and gpt-5-nano.New model
Released o3-deep-research and o4-mini-deep-research, deep research variants of our o-series reasoning models optimized for deep analysis and research tasks.New model
Released o3-pro, a version of the o3 reasoning model that uses more compute to answer hard problems with better reasoning and consistency.Feature
Codex in the ChatGPT iOS appNew model
Released o1-pro, a version of the o1 reasoning model that uses more compute to answer hard problems with better reasoning and consistency.New model
Launched o3-mini, a new small reasoning model that is optimized for science, math, and coding tasks.