GPT-6.1 Terra added to Codex and ChatGPT Work on Plus, Pro and Business
OpenAI's October 26, 2026 release notes say GPT-6.1 Terra is now available in ChatGPT Work and Codex on Plus, Pro, Business, Enterprise and Edu plans. It is not available in Chat. On Enterprise, access depends on workspace availability and admin controls.
SessionWatcher editorial · Published · Updated · Source announcement: 2026-10-26
Related guide: How to check your Codex usage
What changed and which plans get it
OpenAI's release notes dated October 26, 2026 say GPT-6.1 Terra is now available in ChatGPT Work and Codex on the Plus, Pro, Business, Enterprise and Edu plans.
OpenAI describes Terra as a fast, efficient model for professional work. It combines strong image understanding with precise computer use, reasons about images and screens, and then acts across the browser, desktop and apps.
Sources: Openai release notes: 2026-10-26
Where Terra is and is not available
To use it, choose GPT-6.1 Terra from the model list under Advanced in the ChatGPT desktop app or in ChatGPT Work on the web. Work also supports Terra on mobile.
The release notes say the model is not available in Chat and does not support UAE inference residency. For Enterprise customers, access depends on workspace availability and administrator controls.
Sources: Openai release notes: 2026-10-26
What the release notes do not say
The release notes do not say how much of a plan's Codex or ChatGPT Work usage Terra uses, whether it has its own limits, or whether it becomes a default model. They give no API price either.
Sources: Openai release notes: 2026-10-26
AI assisted reporting, checked against the linked official sources. Source pages checked 2026-11-10. Editorial process and corrections.