GPT-6.1 Terra: what's new, API pricing, and which ChatGPT plans get it
On October 26, 2026, OpenAI released GPT-6.1 Terra, a fast, efficient model for computer use, visual reasoning and natural writing. OpenAI says it matches GPT-6 Astra on its agent benchmark at one-tenth the price per token and finishes tasks over three times faster. It's rolling out now to Plus, Pro, Enterprise and Edu in ChatGPT Work and Codex, not in regular chat, and to developers in the API as gpt-6.1-terra at $1 per million input tokens and $5 per million output tokens. Here's what changed, who gets it, what it costs, and when to pick it over Sol or Astra.
What GPT-6.1 Terra is
OpenAI describes GPT-6.1 Terra as “a fast, efficient model that combines detailed visual reasoning and precise computer use alongside clearer, more natural writing.” It understands what's on screen, takes action across apps, and is pitched as the model for everyday work in volume.
It succeeds GPT-5.6 Terra, which OpenAI calls a significant step up. GPT-6.1 Sol and GPT-6 Astra stay OpenAI's most capable models for specialized coding, research and deeper reasoning.
In ChatGPT, Terra is a model for ChatGPT Work and Codex. OpenAI's Help Center says it isn't available in regular chat conversations.
The numbers OpenAI published
These are OpenAI's own results. Independent benchmarks usually follow within a few weeks.
| Measure | What OpenAI reports |
|---|---|
| Agents' Last Exam (professional software tasks) | On par with GPT-6 Astra at one-tenth the price per token |
| Speed | Finishes tasks over 3× faster on average than GPT-6 Astra and GPT-6.1 Sol |
| vs GPT-5.6 Terra, medium effort | 15 percentage points higher at about one-third the cost |
| vs Claude Opus 5.5, max effort | Over 3× more token-efficient and a quarter of the price per token, about 9× lower cost per task |
| Safety rating | Treated as Critical for cybersecurity under OpenAI's Preparedness Framework, with the same safeguards as GPT-6.1 Sol and GPT-6 Astra |
Which ChatGPT plans get GPT-6.1 Terra
OpenAI says Terra is available starting October 26 to all Plus, Pro, Enterprise and Edu users in ChatGPT Work and Codex. Free, Go and Business aren't named in the announcement. It's a gradual rollout, so an eligible account may take a little while to see it.
On usage, OpenAI says your allowance goes further with GPT-6.1 Terra than with GPT-5.6 Terra, and far further than with GPT-6.1 Sol or GPT-6 Astra. It gives no numeric cap.
| Plan | GPT-6.1 Terra | Where |
|---|---|---|
| Free | Not named | — |
| Go | Not named | — |
| Plus | Yes | ChatGPT Work and Codex |
| Pro | Yes | ChatGPT Work and Codex |
| Business | Not named | — |
| Enterprise / Edu | Yes | ChatGPT Work and Codex |
Terra, Sol or Astra: which one to pick
A simple rule: start a task on Terra, and switch to Sol or Astra only when the task needs deep reasoning. On Plus, that also makes your Work and Codex allowance last much longer.
| Model | Pick it for |
|---|---|
| GPT-6.1 Terra | Computer use, reading screenshots, images and technical drawings, navigating apps, writing, and high-volume tasks where speed and allowance matter |
| GPT-6.1 Sol | In-depth research and complex coding |
| GPT-6 Astra | The hardest reasoning and specialized coding, when cost and speed matter less |
GPT-6.1 Terra in the API
Developers can call it as gpt-6.1-terra through the Responses API, Chat Completions and Batch. Tool calling requires the Responses API. Standard prices are $1 per million input tokens, $0.05 cached input and $5 output, down from $2 and $12 for GPT-5.6 Terra.
| Tier | Input | Cached input | Output |
|---|---|---|---|
| Standard | $1.00 | $0.05 | $5.00 |
| Batch / Flex | $0.50 | $0.025 | $2.50 |
| Fast | $2.00 | $0.10 | $10.00 |
- Context window: 1,050,000 tokens (922,000 input max), and up to 128,000 output tokens. Knowledge cutoff: June 1, 2026.
- Reasoning effort: none, low, medium (default), high, xhigh and max.
- Prompts over 272K input tokens are billed at 2× input and 1.5× output for the whole request. Regional processing adds 10%.
- Not supported: Realtime, Assistants, fine-tuning, embeddings, image generation and audio. The API free tier can't use it.
How to use GPT-6.1 Terra in ChatGPT
If Terra isn't in the menu yet, the rollout hasn't reached your account. Check again later.
- Make sure your account is on Plus or higher. Free and Go aren't on OpenAI's list.
- Open ChatGPT Work or Codex in ChatGPT. Terra doesn't appear in a regular chat.
- Choose GPT-6.1 Terra in the model menu when you start the task.
- Give it a task that suits it, such as filling in a form across apps, pulling numbers out of screenshots, or reviewing a technical drawing.
Get Plus without an overseas card
Terra comes with ChatGPT Plus, so you don't need Pro to use it. If you can't pay OpenAI directly because you have no card it accepts or your card keeps getting declined, Pay2GPT activates Plus on your own ChatGPT account. You pay by card, Alipay or crypto such as USDT. Pay2GPT is an independent service, not affiliated with OpenAI.
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FAQ
Is GPT-6.1 Terra free? Not in ChatGPT for now. OpenAI lists Plus, Pro, Enterprise and Edu. In the API it's paid per token, and the free API tier can't use it.
Can I use GPT-6.1 Terra in a normal ChatGPT chat? No. It's a model for ChatGPT Work and Codex only.
Is GPT-6.1 Terra better than GPT-6 Astra? For computer use and high-volume tasks it reaches Astra's score on OpenAI's agent benchmark for far less, and faster. For the hardest reasoning and coding, OpenAI still recommends Sol or Astra.
What's the API model name? gpt-6.1-terra.
Do I need Pro? No. Plus includes Terra in ChatGPT Work and Codex. Pro mainly gives you a larger allowance.
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Plus $21.90/month · Terra in ChatGPT Work and Codex · on your own account · full refund if activation fails