GPT-6.1 Terra: what's new (October 26, 2026)
OpenAI introduced GPT-6.1 Terra for ChatGPT Work and Codex, and in the API as gpt-6.1-terra at $1 per million input tokens and $5 per million output tokens. The English release notes date the rollout October 26, 2026, include Plus, Pro, Business, Enterprise, and Edu, and say Terra is available in Work and Codex, not Chat.
Who it is for
People tracking ChatGPT on this list.