OpenAI opens GPT-5.2 Codex to developers through the Responses API
1 min readOpenAI has released GPT-5.2 Codex to developers through the Responses API. The model was previously limited to the Codex environment. According to OpenAI Developers, it excels at complex, tedious tasks like developing new features, refactoring code, and tracking down bugs. OpenAI also says it’s their best cybersecurity model yet, helping identify vulnerabilities in codebases.