Codex becomes generally available
Codex reached general availability, adding @Codex in Slack, the Codex SDK and new admin tools.
developers.openai.com
Logged from the vendor’s own page. ToolMarketCap records the dated event; it does not rate it.
Codex reached general availability, adding @Codex in Slack, the Codex SDK and new admin tools.
Logged from the vendor’s own page. ToolMarketCap records the dated event; it does not rate it.
GPT-6.1 Terra becomes available in Codex
GPT-6.1 Terra, a fast model with image understanding and computer use, becomes available in Codex and ChatGPT Work on Plus, Pro, Business, Enterprise and Edu plans.
GPT-5.5 retires from Codex for ChatGPT sign-ins
GPT-5.5 is removed from Codex for users signed in with ChatGPT; API-key sessions and the OpenAI API are unaffected, and users are pointed to GPT-6.1 Sol.
GPT-6.1 Sol Ultrafast arrives in Codex for Pro $500 and eligible Enterprise and Edu
An Ultrafast mode speeds up GPT-6.1 Sol token generation in Codex, limited to the Pro $500 plan and eligible Enterprise and Edu plans (off by default for Enterprise).
As of 6 Nov 2026