From cloud hand-offs to GitHub reviews, GPT-5-Codex is optimized for agentic coding and designed to supercharge developer workflows.

OpenAI's AI coding agent, Codex, can now spend anywhere from a few seconds to several hours on a task, thanks to a new, ...

OpenAI is rolling out the GPT-5 Codex model to all Codex instances, including Terminal, IDE extension, and Codex Web (codex.chatgpt.com).

Codex, a new AI model powering its Codex coding assistant with dynamic thinking for complex, agentic software engineering tasks.