# GPT-4o API pricing

GPT-4o is an earlier OpenAI model, still sold. It costs $2.50 per million tokens it reads and $10 per million it writes, $4.38 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-4o
- Maker: OpenAI

## Price per million tokens, in US dollars

| | Price |
| --- | --: |
| Input | $2.50 |
| Cached input | $1.25 |
| Cache write | not listed |
| Output | $10 |
| Blend, 3 read for each 1 written | $4.38 |
| Batch input | $1.25 |
| Batch output | $5 |
| Context window, tokens | 128K |
| Longest answer, tokens | 16K |
| 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 | 0.57 cents | $17.25 |
| A hard question, with thinking | 300, 1,400, 100 | 1.5 cents | $44.25 |
| A long report, summarised | 60,000, 2,000, 20 | 17 cents | $102 |
| A 40-turn agent task | 2,800,000, 40,000, 10 | too long for its window |  |
| A support bot's reply | 4,000, 300, 2,000 | 1 cent | $630 |
| Sort a message into a category | 250, 5, 50,000 | 0.068 cents | $1,013 |
| Read an invoice into fields | 1,500, 250, 1,000 | 0.63 cents | $188 |
| Review a pull request | 25,000, 4,500, 50 | 11 cents | $161 |

## Questions

### How much does GPT-4o cost?

GPT-4o costs $2.50 per million input tokens, the text it reads, and $10 per million output tokens, the text it writes, thinking included. On a mix of 3 tokens read for each 1 written, that is $4.38 per million.

### How much does cached input cost on GPT-4o?

Text GPT-4o reads again from the cache costs $1.25 per million tokens, against $2.50 the first time. OpenAI lists no separate price for writing to the cache.

### Does GPT-4o have a batch price?

Yes. With a batch, where you send many requests and collect the answers later instead of at once, GPT-4o costs $1.25 per million tokens read and $5 per million written.

### What is the context window of GPT-4o?

GPT-4o holds 128K tokens at once, about 190 pages of English text, and writes up to 16K tokens in one answer. The window holds your instructions, the files you attach, the conversation so far and the answer.

### How good is GPT-4o?

Epoch AI has no independent score for GPT-4o yet. Run the same 10 tasks of your own on it and on a model you know, and compare the answers and the bills.

### Should I still use GPT-4o?

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-4o?

At 2,000 replies a day, each reading 4,000 tokens (50 percent of them from cache) and writing 300, a support bot costs 1 cent a reply on GPT-4o, $630 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-4o vs GPT-6 Astra](https://tecyfy.com/prices/compare/gpt-4o-vs-gpt-6-astra.md)
- [GPT-4o vs GPT-6.1 Sol](https://tecyfy.com/prices/compare/gpt-4o-vs-gpt-6-1-sol.md)
- [GPT-4o vs GPT-6 Luna](https://tecyfy.com/prices/compare/gpt-4o-vs-gpt-6-luna.md)
- [GPT-4.1 vs GPT-4o](https://tecyfy.com/prices/compare/gpt-4-1-vs-gpt-4o.md)
- [Claude Sonnet 4.5 vs GPT-4o](https://tecyfy.com/prices/compare/claude-sonnet-4-5-vs-gpt-4o.md)
- [Gemini 2.5 Pro vs GPT-4o](https://tecyfy.com/prices/compare/gemini-2-5-pro-vs-gpt-4o.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 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 (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)