GPT-6.1 Terra
Half the list price of GPT-6.1 Sol for four points less on Artificial Analysis's index (51 against 55): the cheaper OpenAI default where the work is routine.
Key facts
- Score
- 65 / 100, rank #13Tests64Price48Peoplen/aFit100
- Price
- $1 to read · $5 to write, per 1M tokens (OpenAI API pricing)
- Typical mix
- $2 per 1M tokens (three parts reading to one part writing)
- Reads at once
- 1.05M tokens (about 788,000 words)
- Where you can get it
- OpenAI API, Amazon Bedrock, Microsoft Foundry, Gemini Enterprise Agent Platform (Google Cloud), ChatGPT Plus, Pro, Business, Enterprise and Edu
- Host it yourself
- No
- Released
- Oct 26, 2026
- Best for
- High-volume back-office tasks, Filling in forms and moving data between systems, Summarising documents
GPT-6.1 Terra costs $1 per million tokens it reads (input) and $5 per million tokens it writes (output) on OpenAI's list price (OpenAI API pricing, read Nov 12, 2026). A token is about three-quarters of a word. See what every model costs for the same job.
Independent tests
| Test | Result | Who ran it | Read |
|---|---|---|---|
| Artificial Analysis Intelligence Index (max) | 51 | Artificial Analysis LLM leaderboard | Nov 12, 2026 |
| Humanity's Last Exam, Diamond (Scale) | 35.70 | Scale Labs: Humanity's Last Exam (Diamond) leaderboard | Nov 12, 2026 |
What a job costs
The cost of doing each job 1,000 times on GPT-6.1 Terra, worked out from OpenAI’s list price and a fixed size for each job. A product built on the model charges its own price on top.
| 1,000 of these | What one job means | Cost |
|---|---|---|
| Support replies | the customer message, the account notes and two help articles read; a 300-word reply written | $5 |
| Documents processed | a two-page invoice or form read; the fields pulled out | $3.50 |
| Calls summarised | a 40-minute call transcript read; a summary and next steps written | $13 |
| Contracts reviewed | a 40-page contract read against a checklist; a memo of issues written | $38 |
| Drafts written | a brief and one example read; a 600-word email or proposal section written | $5.50 |
Caveats
- Requests that feed it more than 272,000 tokens of text at once are billed at twice the input price and 1.5 times the output price, per OpenAI.
- The 51 is at its top effort setting, where a test task took 14.1 minutes; at the next setting down it scores 42.
- OpenAI sells it for operating software on screen like a person would; no independent test of that was found.
- The ChatGPT plans are listed from our researcher's reading of OpenAI's help page, which blocked automated reading this run.
Questions people ask
How much does GPT-6.1 Terra cost?
GPT-6.1 Terra costs $1 per million tokens it reads (input) and $5 per million tokens it writes (output) on OpenAI's list price (OpenAI API pricing, read Nov 12, 2026). A token is about three-quarters of a word.
What does GPT-6.1 Terra cost for 1,000 support replies?
About $5 at OpenAI's list price, counting one reply as the customer message, the account notes and two help articles read; a 300-word reply written. On the same basis: $3.50 for 1,000 documents processed, $13 for 1,000 calls summarised, $38 for 1,000 contracts reviewed, $5.50 for 1,000 drafts written. A product built on GPT-6.1 Terra charges its own price on top.
How good is GPT-6.1 Terra?
GPT-6.1 Terra ranks #13 of 33 on the Models at Work leaderboard with a score of 65 out of 100 (November 2026 edition). Half the list price of GPT-6.1 Sol for four points less on Artificial Analysis's index (51 against 55): the cheaper OpenAI default where the work is routine.
What is GPT-6.1 Terra best for?
GPT-6.1 Terra is best for high-volume back-office tasks, filling in forms and moving data between systems, summarising documents.
How does GPT-6.1 Terra do on independent tests?
Artificial Analysis Intelligence Index (max): 51 (Artificial Analysis LLM leaderboard); Humanity's Last Exam, Diamond (Scale): 35.70 (Scale Labs: Humanity's Last Exam (Diamond) leaderboard).
How much can GPT-6.1 Terra read at once?
GPT-6.1 Terra can take in 1.05M tokens (about 788,000 words) in one go, according to OpenAI. Vendors call this the context window.
Where can a business get GPT-6.1 Terra?
GPT-6.1 Terra is available through OpenAI API, Amazon Bedrock, Microsoft Foundry, Gemini Enterprise Agent Platform (Google Cloud), ChatGPT Plus, Pro, Business, Enterprise and Edu.
Can a company host GPT-6.1 Terra itself?
No. GPT-6.1 Terra is not released for self-hosting; it is available through OpenAI and the products and clouds that carry it.
Compare GPT-6.1 Terra
How the score works: Score is 0 to 100 and computed, not typed. 40% is independent testing (Artificial Analysis, Arena, Scale, Epoch, Vals and others; each test is scaled against the best score on this board, and tests of real work, such as finished freelance projects or professional tasks, count double the exams). 30% is price: the vendor's list price for a typical mix of reading and writing, on a fixed scale from $0.05 to $60 per million tokens, so a model that costs a fifth as much gains real ground. 15% is what people report after running it, from Signals and linked threads. 15% is fit: how much text it can take in at once and where a business can get it (the products and clouds that carry it), with a small credit for open weights. A missing component drops out and the rest are reweighted. A model with no independent test yet is provisional and ranks below every measured one. Within three points is a tie. Vendor-published figures are labelled and never counted.