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GPT-6.1 Terra
OpenAI · GPT-6
OpenAI released GPT-6.1 Terra on October 26, 2026.
GPT-6.1 Terra is the OpenAI model released on October 26, 2026, a fast, efficient model for visual reasoning, precise computer use and clear, natural writing. OpenAI suggests it for matching product photos to catalog entries, interpreting technical drawings, acting on application screens, and drafting and revising text. It has a 1,050,000-token context window, 128,000 max output tokens and a June 1, 2026 knowledge cutoff, and takes text and image input. Standard pricing is $1 per million input tokens, $0.05 cached input, $1.25 cache write and $5 output. It is available in the Responses and Chat Completions APIs.
GPT-6.1 Terra at a glance
- Released
- API model id
gpt-6.1-terra- Available on
- OpenAI API
- Previous model
- GPT-5.6 (July 9, 2026)
- Announcement
- developers.openai.com
What changed from GPT-5.6
Reasoning effort supports none, low, medium (the default), high, xhigh and max, and tool calling requires the Responses API.
Prompts over 272K input tokens are billed at 2x input and cache rates and 1.5x output for the whole request. Batch and Flex are 50% cheaper than Standard, and Fast mode costs 2x Standard.
New to model names and version numbers? Read how AI labs version their models.
GPT-6.1 Terra release timeline
The launch and every later OpenAI release that mentions GPT-6.1 Terra, oldest first.
- GPT-6.1 Terra Release
Released GPT-6.1 Terra, a fast, efficient model for visual reasoning, precise computer use, and clear, natural writing.
Source: OpenAI API Changelog
GPT-6.1 Terra FAQ
When was GPT-6.1 Terra released?
OpenAI released GPT-6.1 Terra on October 26, 2026. The launch entry below links to the official announcement.
Where is GPT-6.1 Terra available?
GPT-6.1 Terra is available on OpenAI API. Later availability changes are listed under follow-up releases on this page.
What is the GPT-6.1 Terra API model id?
Use gpt-6.1-terra in OpenAI's API.
What came before GPT-6.1 Terra?
GPT-6.1 Terra follows GPT-5.6, released on July 9, 2026.
Other OpenAI models
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