OpenAI has released GPT‑5.2-Codex, the most advanced agentic coding model yet for complex, real-world software engineering.

OpenAI announced on Friday it’s launching a research preview of Codex, the company’s most capable AI coding agent yet. Codex is powered by codex-1, a version of the company’s o3 AI reasoning model ...

Codex Max processes massive workloads through improved context handling. Faster execution and fewer tokens deliver better real-world efficiency. First Windows-trained Codex enhances cross-platform ...

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Codex, OpenAI’s AI-powered software engineering agent that can work on tasks in parallel, is now generally available. Since being launched as a research preview in May, Codex has added Slack ...

GPT-5-Codex promises higher performance and success rates It’s included for Plus, Pro, Business, Edu and Enterprise users The model can use 93.7% fewer tokens on lightweight tasks OpenAI has shared ...

OpenAI has already made some big changes to Codex, the AI-powered coding assistant the company announced last month. The system now accepts commands in plain English and outputs live, working code, ...