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GPT-6.1 Terra
● live- Released
- October 26, 2026
- Live on the API
- 14 min before the announcement
- Price
- $1 / $5 per 1M tokens
- Context
- 1.05M tokens
- Knowledge cutoff
- June 1, 2026
- Bench index
- 80.8 · #8 of 50
The watchers keep tracking it: lineup changes, pricing moves and deprecations all alert.
Launch details
Live — Oct 26; $1 / $5 per MTok, cached input $0.05, cache writes $1.25 (OpenAI's model page); 1.05M ctx / 128K out; knowledge cutoff Jun 1, 2026; reasoning, text and image in; GPT-5.6 Terra lists at $2 / $12 on OpenRouter; first seen Oct 16-19 as the judge model in Microsoft's dotnet/efcore eval configs (PR #39217); our sweep caught gpt-6.1-terra at 17:52 UTC and fired at 17:53; OpenRouter added openai/gpt-6.1-terra (18:13 UTC) and openai/gpt-6.1-terra-pro (18:15) the same evening, both at $1 / $5 and 1.05M ctx; scored on LMArena, Vals and Artificial Analysis by Oct 28; Artificial Analysis' FrontierCode 2.0 run: 42.3% at max, #3 of 28, 0.1 behind GPT-6 Astra (42.4%) at a tenth of Astra's list price (read Oct 28).Answering in 0.4s· answered Is OpenAI API down? →
Watch for OpenAI’s next model, free →Launch report (PDF)
Timeline
Artificial Analysis' own run of Cognition's FrontierCode 2.0, read at 15:00 UTC on October 28, puts GPT-6.1 Terra at 42.3% at max effort. That is third of 28 models and 0.1 point behind GPT-6 Astra (42.4%). OpenAI lists Terra at $1 / $5 per million input / output tokens and Astra at $10 / $50.
Håvard Tveit Ihle published WeirdML v3 on October 28. It is an agentic benchmark of 11 hand-made tasks in which a model has to explore unfamiliar data, build its own machine-learning or data-analysis pipeline and produce results with little data, an unspecified goal or very limited feedback.
OpenAI's GPT-6.1 Terra is live in its API. Our radar saw the gpt-6.1-terra id at 17:52 UTC on October 26 and fired the alert at 17:53, before OpenRouter listed it.
A second public repo now calls GPT-6.1 Terra, a model OpenAI has not announced. On October 24 at 03:48 UTC, Nate Finch, whose GitHub profile lists his company as GitHub, merged a pull request in his own public repo, natefinch/council4, that moves every review step from gpt-6.1-sol to gpt-6.1-terra at high effort.
An id for GPT-6.1 Terra, a model OpenAI has not announced, is already in Microsoft's code.
On the bench index
Coding leaderboard
#9 of 47 on the coding index, at 78.7 · combines LMArena · Coding, LiveBench · Coding, Vals Vibe Code Bench
The official word
We alert on verified API behavior, never on announcements alone — but when OpenAI speaks, it's here: openai.com/news ↗
Where to use GPT-6.1 Terra
24 providers list GPT-6.1 Terra in the models.dev catalog (as of 2026-11-10), under the model ids shown below.
gpt-6.1-terraglobal.openai.gpt-6.1-terra · openai.gpt-6.1-terra · us.openai.gpt-6.1-terragpt-6.1-terragpt-6.1-terraopenai/gpt-6.1-terra · openai/gpt-6.1-terra-proopenai/gpt-6.1-terra · openai/gpt-6.1-terra-fastopenai/gpt-6.1-terraopenai/gpt-6.1-terragpt-6.1-terragpt-6.1-terraopenai/gpt-6.1-terragpt-6.1-terraAlso listed by DigitalOcean, Eden AI, GitHub Copilot, Kilo Gateway, LLM Gateway, LowRouter, Merge Gateway, NanoGPT, Ofox, Requesty, Venice AI, Vivgrid.
Listings cover the model family, so a provider may list a sibling tier under the same name. Check the id before you build on it.
Try it first-hand on OpenAI's own OpenAI Playground ↗
GPT-6.1 Terra: quick answers
Is GPT-6.1 Terra out?
Yes. GPT-6.1 Terra is live and has been since October 26, 2026.
When was GPT-6.1 Terra released?
October 26, 2026.
Is GPT-6.1 Terra good for coding?
On the ArtificialWatch coding index it scores 78.7, #9 of 47 ranked models. The index combines LMArena · Coding, LiveBench · Coding and Vals Vibe Code Bench, taking the median of each model's percentile across them.
Who makes GPT-6.1 Terra?
OpenAI. ArtificialWatch also tracks GPT Image 2.6, GPT-6 Rosalind Research, GPT-6.1 Sol, GPT-6 Luna, GPT-6 Sol, GPT-Live-1, GPT-Image-2.5 and GPT-6 Astra from OpenAI.
Where can I use GPT-6.1 Terra?
24 providers list it in the models.dev catalog, including OpenAI, Amazon Bedrock, Azure, Azure Cognitive Services and OpenRouter. The exact model ids each one lists are on this page.
How much does GPT-6.1 Terra cost?
OpenAI's own API lists GPT-6.1 Terra (gpt-6.1-terra) at $1 per million input tokens and $5 per million output tokens, and $0.05 per million cached input tokens. Prompts over 272K tokens cost $2 input and $7.50 output. Prices as published in the models.dev catalog, as of 2026-11-10.
What is GPT-6.1 Terra's context window?
1.05M tokens, with up to 128K output tokens per response, as OpenAI lists GPT-6.1 Terra (gpt-6.1-terra).
Was GPT-6.1 Terra live before it was announced?
Yes. ArtificialWatch's radar first saw GPT-6.1 Terra live on a public API at 17:52:44 UTC on October 26, 2026, 14 min before the lab's announcement (@OpenAI on X, 18:06:27 UTC). 12 of the 24 launches on ArtificialWatch's lead-time record were live on an API before they were announced.
What is GPT-6.1 Terra's knowledge cutoff?
June 1, 2026, as OpenAI publishes it. GPT-6.1 Terra knows nothing after that date unless it is given search or the facts in the prompt. Every lab's published cutoff is on the LLM knowledge cutoffs page.
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