# GPT-5 nano API pricing

GPT-5 nano is an earlier OpenAI model, still sold. It costs $0.05 per million tokens it reads and $0.40 per million it writes, $0.138 on a mix of 3 read for each 1 written. OpenAI's newest models are GPT-6 Astra, GPT-6.1 Sol and GPT-6 Luna. Below are every price OpenAI lists for it, and what 8 everyday jobs cost a month on it.

- Page: https://tecyfy.com/prices/gpt-5-nano
- Maker: OpenAI

## Price per million tokens, in US dollars

| | Price |
| --- | --: |
| Input | $0.05 |
| Cached input | $0.005 |
| Cache write | not listed |
| Output | $0.40 |
| Blend, 3 read for each 1 written | $0.138 |
| Batch input | $0.025 |
| Batch output | $0.20 |
| Context window, tokens | 400K |
| Longest answer, tokens | 128K |
| Capability score (Epoch Capabilities Index; GPT-5 is 150) | 139 |

## 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 | 0.022 cents | 65 cents |
| A hard question, with thinking | 300, 1,400, 100 | 0.057 cents | $1.72 |
| A long report, summarised | 60,000, 2,000, 20 | 0.38 cents | $2.28 |
| A 40-turn agent task | 2,800,000, 40,000, 10 | 4.3 cents | $12.78 |
| A support bot's reply | 4,000, 300, 2,000 | 0.023 cents | $13.80 |
| Sort a message into a category | 250, 5, 50,000 | 0.0014 cents | $21.75 |
| Read an invoice into fields | 1,500, 250, 1,000 | 0.017 cents | $5.25 |
| Review a pull request | 25,000, 4,500, 50 | 0.3 cents | $4.58 |

## Cheaper models that score as well as GPT-5 nano

None of the newest models that scores about as well costs less on a mix of 3 tokens read for each 1 written.

## Questions

### How much does GPT-5 nano cost?

GPT-5 nano costs $0.05 per million input tokens, the text it reads, and $0.40 per million output tokens, the text it writes, thinking included. On a mix of 3 tokens read for each 1 written, that is $0.138 per million.

### How much does cached input cost on GPT-5 nano?

Text GPT-5 nano reads again from the cache costs $0.005 per million tokens, against $0.05 the first time. OpenAI lists no separate price for writing to the cache.

### Does GPT-5 nano have a batch price?

Yes. With a batch, where you send many requests and collect the answers later instead of at once, GPT-5 nano costs $0.025 per million tokens read and $0.20 per million written.

### What is the context window of GPT-5 nano?

GPT-5 nano holds 400K tokens at once, about 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-5 nano?

GPT-5 nano scores 139 on the Epoch Capabilities Index, an independent score from Epoch AI that combines over 50 benchmarks, with a range of doubt from 135 to 141 (GPT-5 is 150). One score is an average; test it on 10 tasks of your own.

### Is there a cheaper model as good as GPT-5 nano?

Not among the newest models we list: none that scores about as well on the Epoch Capabilities Index costs less on a mix of 3 tokens read for each 1 written.

### Should I still use GPT-5 nano?

It is still sold, so it keeps working, but OpenAI's newest models are GPT-6 Astra, GPT-6.1 Sol and GPT-6 Luna. Compare its price with theirs below, and run your own tasks on the newer model before you move.

### What does a support bot cost a month on GPT-5 nano?

At 2,000 replies a day, each reading 4,000 tokens (50 percent of them from cache) and writing 300, a support bot costs 0.023 cents a reply on GPT-5 nano, $13.80 a month.

### What does an AI agent task cost on GPT-5 nano?

One 40-turn task that reads 2,800,000 tokens in all, 90 percent of them from cache, and writes 40,000, costs 4.3 cents on GPT-5 nano. At 10 tasks a day that is $12.78 a month.

## Sources

- [OpenAI: API prices](https://developers.openai.com/api/docs/pricing)
- [Epoch Capabilities Index, by Epoch AI (CC BY 4.0)](https://epoch.ai/benchmarks/eci)
- Every model's prices as [JSON](https://tecyfy.com/prices.json) or [CSV](https://tecyfy.com/prices.csv), free to use

## Compare

- [GPT-5 nano vs GPT-6 Astra](https://tecyfy.com/prices/compare/gpt-5-nano-vs-gpt-6-astra.md)
- [GPT-5 nano vs GPT-6.1 Sol](https://tecyfy.com/prices/compare/gpt-5-nano-vs-gpt-6-1-sol.md)
- [GPT-5 nano vs GPT-6 Luna](https://tecyfy.com/prices/compare/gpt-5-nano-vs-gpt-6-luna.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 mini](https://tecyfy.com/prices/gpt-5-4-mini.md)
- [GPT-5.4 nano](https://tecyfy.com/prices/gpt-5-4-nano.md)
- [GPT-5.4 pro](https://tecyfy.com/prices/gpt-5-4-pro.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 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)
- [GPT-3.5 Turbo (1106)](https://tecyfy.com/prices/gpt-3-5-turbo-1106.md)
- [GPT-3.5 Turbo Instruct](https://tecyfy.com/prices/gpt-3-5-turbo-instruct.md)
- [davinci-002](https://tecyfy.com/prices/davinci-002.md)
- [babbage-002](https://tecyfy.com/prices/babbage-002.md)