GPT-5-Codex is a version of GPT-5 optimized for agentic coding in Codex. It is the default for cloud tasks and code review, and developers can choose it for local tasks via Codex CLI and the IDE extension.
Added to The Deploy Log , updated . Read Edition 1, the edition that carried it.
1 row from OpenAI in The Deploy Log is dated on or before this one: this one, the first.