Pricing · OpenAI
GPT-6.1 Terra
OpenAI's gpt-6.1-terra, 1.1M tokens of context. Every number on this page was read off OpenAI's own pricing
page — never estimated, never recalled from memory.
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How OpenAI describes it
“A fast, efficient model for visual reasoning, precise computer use, and clear, natural writing.”
From OpenAI's documentation
- What it is for: “Use GPT-6.1 Terra to match product photos to catalog entries, interpret technical drawings, act on application screens, or draft and revise text.” (model page, read October 27, 2026)
- Which API to call: “Tool calling requires the Responses API.” (model page, read October 27, 2026)
- Migration guidance: “When migrating from GPT-5.6 Terra, compare both models on representative images and workflows using the same reasoning effort. If your application calls tools through Chat Completions, migrate those requests to the Responses API.” (documentation page, read October 27, 2026)
Pricing
Prices in US dollars per 1M tokens, as OpenAI's official pricing page printed them when they were last verified, on October 29, 2026.
| Input | $1.00 | per 1M tokens |
|---|---|---|
| Output | $5.00 | per 1M tokens |
| Cached input | $0.05 | per 1M tokens · 0.05× the input price |
| Cache write (30-minute retention) | $1.25 | per 1M tokens |
| Cache write (12-hour retention) | $2.50 | per 1M tokens |
Which cache write is which: OpenAI's pricing page in its Markdown version, read October 29, 2026, heads its Standard table "| Model | Short context input | Short context output | Short context cached input | Short context 30m write | Short context 12h write | Long context input | Long context output | Long context cached input | Long context 30m write | Long context 12h write |" and prints "| gpt-6.1-terra | $1.00 | $5.00 | $0.05 | $1.25 | $2.50 | $2.00 | $7.50 | $0.10 | $2.50 | $5.00 |".
Long-prompt tiers
Pricing changes above a prompt-size threshold. If your average request is near the boundary, the effective rate is not the headline rate.
| Condition | Input | Output | Cached input | Cache write (30-minute retention) | Cache write (12-hour retention) |
|---|---|---|---|---|---|
| prompt > 272000 tokens | $2.00 | $7.50 | $0.10 | $2.50 | $5.00 |
At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, GPT-6.1 Terra costs $2.00: $1.00 for input and $1.00 for output, at the prices above. Same formula as the calculator; change the volume there.
Where this price sits
$1.00 per 1M input tokens (for prompts up to 272K tokens) is the 26th cheapest input price of the 77 current models with a verified price on AI Signal, and the 4th of OpenAI's 17. Output costs 5.0× the input price.
Other current models in the GPT-6 family:
- GPT-6 Luna 1.1M tokens $0.10 in · $0.50 out
- GPT-6.1 Sol 1.1M tokens $2.00 in · $10.00 out
- GPT-6 Sol 1.1M tokens $2.00 in · $10.00 out
- GPT-6 Astra 1.1M tokens $10.00 in · $50.00 out
Other price lists OpenAI publishes for GPT-6.1 Terra
The prices above are OpenAI's Standard list, the one the table and the calculator use. OpenAI also sells GPT-6.1 Terra on 3 other lists, each with a condition. Figures and wording are quoted from OpenAI's own pages as read on the date shown; AI Signal computes none of them.
-
Batch · half of Standard on every column · wait: results within 24 hours
Printed for GPT-6.1 Terra: $0.50 input, $0.025 cached input, $0.625 cache write, $2.50 output, per 1M tokens.
Learn how to use OpenAI's Batch API to send asynchronous groups of requests with 50% lower costs, a separate pool of significantly higher rate limits, and a clear 24-hour turnaround time.
Batches that do not complete in time eventually move to an expired state; unfinished requests within that batch are cancelled
Source, read October 27, 2026
-
Flex · half of Standard on every column, the same figures as Batch · accept slower responses and occasional unavailability
Printed for GPT-6.1 Terra: $0.50 input, $0.025 cached input, $0.625 cache write, $2.50 output, per 1M tokens.
Flex processing provides lower costs for Responses or Chat Completions requests in exchange for slower response times and occasional resource unavailability.
Due to slower processing speeds with Flex processing, request timeouts are more likely.
Source, read October 27, 2026
-
Fast mode · double Standard on every column, except the GPT-4.1 and GPT-4o models, which the page prices at less than double · pay more to be scheduled first
Printed for GPT-6.1 Terra: $2.00 input, $0.10 cached input, $2.50 cache write, $10.00 output, per 1M tokens.
Priority processing was renamed Fast mode on July 30, 2026.
If your traffic ramps too fast, the system may downgrade some Fast mode requests to standard speeds and charge standard rates.
Source, read October 27, 2026
Mentioned in
One post on AI Signal cites GPT-6.1 Terra. The sentence is the post's own, taken from where it links here.
-
GPT-6.1 Terra API Pricing: $1 In, $5 Out, Half of GPT-6.1 Sol · October 27, 2026
The model has its own page with every figure and its source: GPT-6.1 Terra.
Against GPT-5.6 Terra
GPT-5.6 Terra is the model OpenAI's migration guidance, quoted above, talks about migrating from (still current). Against GPT-5.6 Terra, GPT-6.1 Terra has input at $1.00 against $2.00, 2× less; output at $5.00 against $12.00, 2.4× less; cached input at $0.05 against $0.20, 4× less (per 1M tokens). Its prices were verified October 29, 2026: GPT-5.6 Terra pricing →
Specifications
GPT-6.1 Terra's API identifier, provider and limits, from the same row of the dataset as the prices above.
| API model id | gpt-6.1-terra | |
|---|---|---|
| Provider | OpenAI | |
| Family | GPT-6 | |
| Context window | 1.1M tokens | |
| Max output | 128K tokens | |
| Knowledge cutoff | 2026-06-01 | |
| Released | October 26, 2026 | |
| Status | Current | |
GPT-6.1 Terra was released on October 26, 2026. It returns up to 128K tokens per response, against a context window of 1.1M tokens.
Questions about GPT-6.1 Terra pricing
- How much does GPT-6.1 Terra cost per million tokens?
- $1.00 per 1M input tokens and $5.00 per 1M output tokens for prompts up to 272,000 tokens, read on OpenAI's official pricing page on October 29, 2026.
- What does a cached input token cost on GPT-6.1 Terra?
- $0.05 per 1M cached input tokens, 5% of the $1.00 input price; a 30-minute cache write costs $1.25, a 12-hour cache write costs $2.50 per 1M tokens.
- Does GPT-6.1 Terra cost more for long prompts?
- Yes. For prompts over 272,000 tokens it costs $2.00 per 1M input tokens and $7.50 per 1M output tokens, $0.10 for cached input, against $1.00 and $5.00 below that.
Released October 26, 2026 (OpenAI changelog, Oct 26: 'Released GPT-6.1 Terra , a fast, efficient model for visual reasoning, precise computer use, and clear, natural writing.'). Read on 2026-10-27 from OpenAI's pricing page in its Markdown version (developers.openai.com/api/docs/pricing.md), Flagship models, Standard table: 'gpt-6.1-terra | $1.00 | $5.00 | $0.05 | $1.25 | $2.50 | $2.00 | $7.50 | $0.10 | $2.50 | $5.00' (short context input, output, cached input, 30m cache write, 12h cache write, then the same for long context, per 1M tokens). Model page (developers.openai.com/api/docs/models/gpt-6.1-terra), read the same day: '1,050,000 context window', '128,000 max output tokens', 'Jun 01, 2026 knowledge cutoff', 'Cached input tokens are priced at 5% of the uncached input token rate.', 'Prompts with more than 272K input tokens are priced at 2x input and cache rates and 1.5x output for the full request.' The Fast row ($2 / $10) is not the long-context tier.
Verified October 29, 2026 against OpenAI's official pricing page. Confidence: confirmed. No price change recorded for this model. How the data is checked.
Other OpenAI models with a verified price
- GPT-6 Luna GPT-6 $0.10 in · $0.50 out
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- GPT-5 Search API GPT-5 $1.25 in · $10.00 out
- GPT-5.2 GPT-5.2 $1.75 in · $14.00 out
- GPT-6.1 Sol GPT-6 $2.00 in · $10.00 out
- GPT-6 Sol GPT-6 $2.00 in · $10.00 out
- GPT-5.6 Terra GPT-5.6 $2.00 in · $12.00 out
- GPT-5.6 Sol GPT-5.6 $4.00 in · $20.00 out · promo
- GPT-Rosalind GPT-Rosalind $5.00 in · $25.00 out
- GPT-Rosalind Discovery GPT-Rosalind $5.00 in · $25.00 out
- ChatGPT (chat-latest) GPT $5.00 in · $30.00 out
- GPT-6 Astra GPT-6 $10.00 in · $50.00 out
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- GPT-5.5 Cyber GPT-5.5 $12.50 in · $75.00 out
- GPT-5.2 Pro GPT-5.2 $21.00 in · $168.00 out
Cheaper or equally priced alternatives
Current models with an input price at or below $1.00 per 1M tokens.
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