# GPT-6.1 Terra API pricing

GPT-6.1 Terra is one of OpenAI's newest models. It costs $1 per million tokens it reads and $5 per million it writes, $2 on a mix of 3 read for each 1 written. Below are every price OpenAI lists for it, what 8 everyday jobs cost a month on it, and the models that do as well for less.

- Page: https://tecyfy.com/prices/gpt-6-1-terra
- Maker: OpenAI

## Price per million tokens, in US dollars

| | Price |
| --- | --: |
| Input | $1 |
| Cached input | $0.05 |
| Cache write | $1.25 |
| Output | $5 |
| Blend, 3 read for each 1 written | $2 |
| Batch input | $0.50 |
| Batch output | $2.50 |
| Long prompt input (over 272K tokens) | $2 |
| Long prompt output | $7.50 |
| Context window, tokens | 1.05M |
| Longest answer, tokens | 128K |
| Capability score (Epoch Capabilities Index; GPT-5 is 150) | not scored |

## What 8 everyday jobs cost a month

Each job at its usual runs a day, for 30 days, at the standard price.

| Job | Tokens in, out, runs a day | A run | A month |
| --- | --- | --: | --: |
| A chat question | 300, 500, 100 | 0.28 cents | $8.40 |
| A hard question, with thinking | 300, 1,400, 100 | 0.73 cents | $21.90 |
| A long report, summarised | 60,000, 2,000, 20 | 7 cents | $42.00 |
| A 40-turn agent task | 2,800,000, 40,000, 10 | 61 cents | $182 |
| A support bot's reply | 4,000, 300, 2,000 | 0.36 cents | $216 |
| Sort a message into a category | 250, 5, 50,000 | 0.028 cents | $413 |
| Read an invoice into fields | 1,500, 250, 1,000 | 0.27 cents | $82.50 |
| Review a pull request | 25,000, 4,500, 50 | 4.8 cents | $71.25 |

## Questions

### How much does GPT-6.1 Terra cost?

GPT-6.1 Terra costs $1 per million input tokens, the text it reads, and $5 per million output tokens, the text it writes, thinking included. On a mix of 3 tokens read for each 1 written, that is $2 per million.

### How much does cached input cost on GPT-6.1 Terra?

Text GPT-6.1 Terra reads again from the cache costs $0.05 per million tokens, against $1 the first time. Putting text in the cache costs $1.25 per million, so a long prompt sent again and again costs far less after the first time.

### Does GPT-6.1 Terra have a batch price?

Yes. With a batch, where you send many requests and collect the answers later instead of at once, GPT-6.1 Terra costs $0.50 per million tokens read and $2.50 per million written.

### Does a long prompt cost more on GPT-6.1 Terra?

Yes. Once a prompt passes 272K tokens, the whole request costs $2 per million tokens read and $7.50 per million written, against $1 and $5 below that.

### What is the context window of GPT-6.1 Terra?

GPT-6.1 Terra holds 1.05M tokens at once, about 1,600 pages of English text, and writes up to 128K tokens in one answer. The window holds your instructions, the files you attach, the conversation so far and the answer.

### How good is GPT-6.1 Terra?

Epoch AI has no independent score for GPT-6.1 Terra yet. Run the same 10 tasks of your own on it and on a model you know, and compare the answers and the bills.

### Where does GPT-6.1 Terra rank on price?

GPT-6.1 Terra is the 8th cheapest of the 17 newest models we list, by the price of 3 tokens read for each 1 written.

### What does a support bot cost a month on GPT-6.1 Terra?

At 2,000 replies a day, each reading 4,000 tokens (50 percent of them from cache) and writing 300, a support bot costs 0.36 cents a reply on GPT-6.1 Terra, $216 a month.

### What does an AI agent task cost on GPT-6.1 Terra?

One 40-turn task that reads 2,800,000 tokens in all, 90 percent of them from cache, and writes 40,000, costs 61 cents on GPT-6.1 Terra. At 10 tasks a day that is $182 a month.

## Sources

- [OpenAI: API prices](https://developers.openai.com/api/docs/pricing)
- Every model's prices as [JSON](https://tecyfy.com/prices.json) or [CSV](https://tecyfy.com/prices.csv), free to use

## Compare

- [GPT-6.1 Terra vs GPT-6 Sol](https://tecyfy.com/prices/compare/gpt-6-1-terra-vs-gpt-6-sol.md)
- [GPT-5.6 Sol vs GPT-6.1 Terra](https://tecyfy.com/prices/compare/gpt-5-6-sol-vs-gpt-6-1-terra.md)
- [GPT-5.6 Terra vs GPT-6.1 Terra](https://tecyfy.com/prices/compare/gpt-5-6-terra-vs-gpt-6-1-terra.md)
- [GPT-5.6 Luna vs GPT-6.1 Terra](https://tecyfy.com/prices/compare/gpt-5-6-luna-vs-gpt-6-1-terra.md)
- [GPT-5.5 vs GPT-6.1 Terra](https://tecyfy.com/prices/compare/gpt-5-5-vs-gpt-6-1-terra.md)
- [GPT-5.5 pro vs GPT-6.1 Terra](https://tecyfy.com/prices/compare/gpt-5-5-pro-vs-gpt-6-1-terra.md)
- [GPT-5.4 vs GPT-6.1 Terra](https://tecyfy.com/prices/compare/gpt-5-4-vs-gpt-6-1-terra.md)
- [GPT-5.4 pro vs GPT-6.1 Terra](https://tecyfy.com/prices/compare/gpt-5-4-pro-vs-gpt-6-1-terra.md)

## OpenAI's other models

- [GPT-6 Astra](https://tecyfy.com/prices/gpt-6-astra.md)
- [GPT-6.1 Sol](https://tecyfy.com/prices/gpt-6-1-sol.md)
- [GPT-6 Luna](https://tecyfy.com/prices/gpt-6-luna.md)
- [GPT-6 Sol](https://tecyfy.com/prices/gpt-6-sol.md)
- [GPT-5.6 Sol](https://tecyfy.com/prices/gpt-5-6-sol.md)
- [GPT-5.6 Terra](https://tecyfy.com/prices/gpt-5-6-terra.md)
- [GPT-5.6 Luna](https://tecyfy.com/prices/gpt-5-6-luna.md)
- [GPT-5.5](https://tecyfy.com/prices/gpt-5-5.md)
- [GPT-5.5 pro](https://tecyfy.com/prices/gpt-5-5-pro.md)
- [GPT-5.4](https://tecyfy.com/prices/gpt-5-4.md)
- [GPT-5.4 pro](https://tecyfy.com/prices/gpt-5-4-pro.md)
- [GPT-5.4 mini](https://tecyfy.com/prices/gpt-5-4-mini.md)
- [GPT-5.4 nano](https://tecyfy.com/prices/gpt-5-4-nano.md)
- [GPT-5.2](https://tecyfy.com/prices/gpt-5-2.md)
- [GPT-5.2 pro](https://tecyfy.com/prices/gpt-5-2-pro.md)
- [GPT-5.1](https://tecyfy.com/prices/gpt-5-1.md)
- [GPT-5](https://tecyfy.com/prices/gpt-5.md)
- [GPT-5 mini](https://tecyfy.com/prices/gpt-5-mini.md)
- [GPT-5 nano](https://tecyfy.com/prices/gpt-5-nano.md)
- [GPT-5 pro](https://tecyfy.com/prices/gpt-5-pro.md)
- [GPT-4.1](https://tecyfy.com/prices/gpt-4-1.md)
- [GPT-4.1 mini](https://tecyfy.com/prices/gpt-4-1-mini.md)
- [GPT-4.1 nano](https://tecyfy.com/prices/gpt-4-1-nano.md)
- [GPT-4o](https://tecyfy.com/prices/gpt-4o.md)
- [GPT-4o (2024-05-13)](https://tecyfy.com/prices/gpt-4o-2024-05-13.md)
- [GPT-4o mini](https://tecyfy.com/prices/gpt-4o-mini.md)
- [o1](https://tecyfy.com/prices/o1.md)
- [o1-pro](https://tecyfy.com/prices/o1-pro.md)
- [o3-pro](https://tecyfy.com/prices/o3-pro.md)
- [o3](https://tecyfy.com/prices/o3.md)
- [o4-mini](https://tecyfy.com/prices/o4-mini.md)
- [o3-mini](https://tecyfy.com/prices/o3-mini.md)
- [GPT-4 Turbo (2024-04-09)](https://tecyfy.com/prices/gpt-4-turbo-2024-04-09.md)
- [GPT-4 (0613)](https://tecyfy.com/prices/gpt-4-0613.md)
- [GPT-3.5 Turbo](https://tecyfy.com/prices/gpt-3-5-turbo.md)
- [GPT-3.5 Turbo (0125)](https://tecyfy.com/prices/gpt-3-5-turbo-0125.md)