# GPT-6.1 Terra

> GPT-6.1 Terra is an OpenAI model that became available in ChatGPT Work and Codex on October 26, 2026, on the Plus, Pro, Business, Enterprise and Edu plans. OpenAI describes it as a fast, efficient model for professional work that combines image understanding with computer use. It is not available in Chat, and in Codex it requires CLI 0.159.0 or later.

URL: https://aistack.sh/model/gpt-6-1-terra
Vendor: OpenAI (product page: https://aistack.sh/tool/chatgpt)
Last checked against sources: 2026-10-29

## Specs

- Released: Oct 26, 2026
- Status: Available
- Plans: Plus, Pro, Business, Enterprise, Edu

## Where you can use it

- ChatGPT (https://aistack.sh/tool/chatgpt): Choose it from the model list in Advanced in the ChatGPT desktop app or ChatGPT Work on the web.
- ChatGPT (https://aistack.sh/tool/chatgpt): ChatGPT Work also supports Terra on mobile.
- Codex (https://aistack.sh/tool/codex): Requires Codex CLI 0.159.0 or later; select it with `codex -m gpt-6.1-terra`.
- GPT-6.1 Terra is not available in Chat, only in ChatGPT Work and Codex.
- It does not support UAE inference residency.
- Enterprise access also depends on workspace availability and administrator controls.
- Its launch did not change overall Work and Codex plan limits.

## FAQ

### Which plans include GPT-6.1 Terra?

Plus, Pro, Business, Enterprise and Edu, in ChatGPT Work and Codex, according to OpenAI's October 26, 2026 changelog entry.

### How do I use GPT-6.1 Terra in Codex?

Install Codex CLI 0.159.0 or later and run `codex -m gpt-6.1-terra`. In an interactive session you can also switch models with `/model`.

### Is GPT-6.1 Terra available in ChatGPT Chat?

No. OpenAI's pricing page says it is available in Work and Codex but not in Chat.

### How do I pick GPT-6.1 Terra in ChatGPT?

Open Advanced in the ChatGPT desktop app or ChatGPT Work on the web and choose it from the model list. ChatGPT Work also supports Terra on mobile.

## Sources

- [OpenAI: ChatGPT & Codex changelog](https://learn.chatgpt.com/docs/changelog), read 2026-10-29
- [OpenAI: Models](https://learn.chatgpt.com/docs/models), read 2026-10-29
- [OpenAI: Pricing](https://learn.chatgpt.com/docs/pricing), read 2026-10-29