Introducing GPT-5.2-Codex

OpenAI Blog · 6 months ago

OpenAI released GPT-5.2-Codex, a coding model featuring long-horizon reasoning and large-scale code transformation abilities alongside improved cybersecurity features. The model supports extended reasoning chains for complex programming tasks and can handle transformations across entire codebases rather than isolated functions. Organizations can now automate larger portions of code refactoring and security vulnerability detection workflows.