Introducing GPT-5-codex

Adding GPT-5-codex, a GPT-5 variant optimized for agentic coding in Codex. It's available everywhere you use Codex: default for cloud tasks and code review, and selectable for local workflows via the Codex CLI and IDE extension. Use GPT-5-codex for coding-focused work in Codex, or Codex-like environments; use GPT-5 for general, non-coding tasks.

In day-to-day use, GPT-5-codex supports fast interactive edits and can run independently on longer tasks when needed. For frontend/UI work, it accepts images or screenshots alongside text as input. Note: GPT-5-Codex is not currently supported in ChatGPT.