Introducing GPT-5.2-Codex
OpenAI Blog
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.
Why it matters
GPT-5.2-Codex is OpenAI’s most advanced coding model, offering long-horizon reasoning, large-scale code transformations, and enhanced cybersecurity capabilities.