Frontier flagship models
GPT-6.1 Terra
Made by OpenAI
OpenAI's October 26, 2026 model for visual reasoning, computer use and writing, with paid API and eligible paid-plan access.
What it is
OpenAI introduced GPT-6.1 Terra on October 26, 2026 as the successor to GPT-5.6 Terra. The company describes a model combining visual reasoning, computer use and natural writing, with examples including proposals, technical drawings, forms and video editing.
OpenAI says Terra is rolling out in ChatGPT Work and Codex for Plus, Pro, Enterprise and Edu users and is available through the API as gpt-6.1-terra. The announcement does not establish free-plan access. API billing is separate from a ChatGPT subscription.
OpenAI's model documentation lists $1 per million input tokens, $0.05 per million cached input tokens and $5 per million output tokens. The launch's comparisons on Agents' Last Exam and MMMU-Pro, and its speed and cost comparisons, are OpenAI's own claims; no independent benchmark score is assigned here.
This page documents the release without changing the library's prompt runner. GPT-6.1 Terra cannot be run from this library, and the existing OpenAI endpoints remain unchanged.
Paid access only. Check automated actions and factual output; this library has no GPT-6.1 Terra endpoint enabled.
Published price
- API — input$1 per 1M tokens
- API — cached input$0.05 per 1M tokens
- API — output$5 per 1M tokens
- ChatGPT Work and CodexPlus, Pro, Enterprise and Edu; rollout announced October 26Eligible paid plan required
API use is billed separately from a ChatGPT subscription. The announcement does not establish free-plan access or immediate availability for every account.
Source: OpenAI's model documentation · Last checked 26 October 2026
Benchmarks
No numerical benchmark results are recorded here for this model. Maker-published evaluations are not independent results.
Where to read today's numbers
Scores move, so these are the boards that keep them current.
- OpenAI's GPT-6.1 Terra launch evaluationsMaker's own figures
Agents' Last Exam, MMMU-Pro and other launch comparisons reported by OpenAI, the model's maker; not independent verification.
Published capabilities
OpenAI's October 26 model for visual reasoning, computer use and writing, succeeding GPT-5.6 Terra. The announcement describes drafting proposals, interpreting technical drawings, filling out forms and editing videos. Benchmark and speed comparisons are OpenAI's own claims, not independent results.
Prompting it from this site
Can't be run from here
Use OpenAI's paid API or ChatGPT Work and Codex on an eligible paid plan. This library has no GPT-6.1 Terra endpoint enabled; existing OpenAI choices remain unchanged.
Use it for
- Visual document and technical drawing analysis
- Computer-use tasks and form filling
- Writing proposals and high-volume document workflows