GPT-6.1 Terra API pricing per million tokens
GPT-6.1 Terra costs $1 per million input tokens and $5 per million output, with a 1.05M context window. Through AIGROW API credit, it costs $0.25 and $1.25.
$25 a month brings $110 of API credit and cancels any time; $25 once buys $100. US dollars per million tokens, standard rate, shortest context band. Number 6 of 256 on the Epoch Capabilities Index by Epoch AI, data of 12 November 2026. CC BY 4.0
- Through AIGROW credit
- $0.25 / $1.25
- 1,000 support replies
- $5.00
- Cached input
- $0.05
- Context window
- 1,050,000 tokens
- Released
- 26 Oct 2026
- Weights
- Closed weights
From OpenAI’s own pages, 12 November 2026.
GPT-6.1 Terra costs $1 per million input tokens and $5 per million output tokens on OpenAI’s own API, and $0.05 for cached input. At those prices 1,000 support replies cost $5.00, the 23rd cheapest of 49 priced models on our list.
AIGROW API credit runs GPT-6.1 Terra at $0.25 / $1.25 per million input / output tokens, up to 75% below list price. See API credit
What a job costs
Three jobs, 1,000 runs of each, at the list price above, and where each puts GPT-6.1 Terra among the 49 models with a list price.
| Job | 1,000 runs | Among 49 |
|---|---|---|
| Support reply3,000 in, 400 out. | $5.00 | 23rd cheapest |
| Document summary25,000 in, 1,000 out. | $30.00 | 22nd cheapest |
| Agent task80,000 in (70,000 cached), 3,000 out. | $28.50 | 20th cheapest |
The token counts are ours, chosen to look like real work; the prices are OpenAI’s. All three jobs stay under 100,000 tokens a request, below every long-context surcharge on the list.
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
OpenAI pitches it as a fast, efficient model for visual reasoning, computer use and writing. Requests above 272K input tokens bill 2x input and 1.5x output ($2 / $7.50, cached $0.10). Cache write $1.25 (30 min) or $2.50 (12 h). Batch and Flex 50% off, Fast mode 2x. Data residency adds 10%. Context 1,050,000 with max input 922K.
GPT-6.1 Terra against the models it is weighed with
Each comparison puts both list prices side by side and costs the same three jobs on each.
- vs GPT-5.6 Terra
- OpenAI's new Terra against the GPT-5.6 Terra it replaces, at half the input price and under half the output price.
- vs GPT-6.1 Sol
- The step from Terra to Sol within OpenAI's GPT-6.1 family, at twice the price on input and output.
- vs GPT-6 Luna
- OpenAI's two efficient GPT-6 models, with Luna at a tenth of the Terra price.
- vs Claude Sonnet 5.5
- Anthropic's workhorse against OpenAI's new Terra, which lists at half the Sonnet price on input and output.
- vs Gemini 3.8 Flash
- OpenAI's new Terra against Google's workhorse Flash, a third dearer on input and output until Flash doubles in 2027.
Other OpenAI models
| Model | Input | Output | Context | 1,000 replies |
|---|---|---|---|---|
| GPT-6 LunaOpenAI | $0.10 | $0.50 | 1.05M | $0.50 |
| GPT-5.6 LunaOpenAINewer model: GPT-6 Luna | $0.20 | $1.20 | 1.05M | $1.08 |
| GPT-5.4 nanoOpenAINewer model: GPT-6 Luna | $0.20 | $1.25 | 400K | $1.10 |
| GPT-5.4 miniOpenAINewer model: GPT-6.1 Terra | $0.75 | $4.50 | 400K | $4.05 |
| GPT-6.1 SolOpenAI | $2.00 | $10.00 | 1.05M | $10.00 |
| GPT-6 SolOpenAINewer model: GPT-6.1 Sol | $2.00 | $10.00 | 1.05M | $10.00 |
| GPT-5.6 TerraOpenAINewer model: GPT-6.1 Terra | $2.00 | $12.00 | 1.05M | $10.80 |
| GPT-5.6 SolOpenAINewer model: GPT-6.1 Sol | $4.00 | $20.00 | 1.05M | $20.00 |
| GPT-5.5OpenAINewer model: GPT-6 Astra | $5.00 | $30.00 | 1.05M | $27.00 |
| GPT-6 AstraOpenAI | $10.00 | $50.00 | 1.05M | $50.00 |
Where the price comes from
Read on 12 November 2026. Each price is the standard rate for the shortest context band, with no batch or priority discount; long-context surcharges, batch rates and promotions are in each model’s small print. No price was taken from a reseller.
Run GPT-6.1 Terra up to 75% below list price
Through AIGROW API credit, GPT-6.1 Terra costs $0.25 / $1.25 per million input / output tokens against $1.00 / $5.00 at list, and $25 buys $100 of credit. The model id is gpt-6.1-terra.
Prices checked 12 November 2026 · See them by release date