# Grok 4.5 API pricing

Grok 4.5 is an earlier xAI model, still sold. It costs $2 per million tokens it reads and $6 per million it writes, $3 on a mix of 3 read for each 1 written. xAI's newest models are Grok 4.7. Below are every price xAI lists for it, and what 8 everyday jobs cost a month on it.

- Page: https://tecyfy.com/prices/grok-4-5
- Maker: xAI

## Price per million tokens, in US dollars

| | Price |
| --- | --: |
| Input | $2 |
| Cached input | $0.30 |
| Cache write | not listed |
| Output | $6 |
| Blend, 3 read for each 1 written | $3 |
| Batch input | not listed |
| Batch output | not listed |
| Long prompt input (over 200K tokens) | $4 |
| Long prompt output | $12 |
| Context window, tokens | 500K |
| Longest answer, tokens | not listed |
| Capability score (Epoch Capabilities Index; GPT-5 is 150) | 154 |

## 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 | 0.36 cents | $10.80 |
| A hard question, with thinking | 300, 1,400, 100 | 0.9 cents | $27.00 |
| A long report, summarised | 60,000, 2,000, 20 | 13 cents | $79.20 |
| A 40-turn agent task | 2,800,000, 40,000, 10 | $1.56 | $467 |
| A support bot's reply | 4,000, 300, 2,000 | 0.64 cents | $384 |
| Sort a message into a category | 250, 5, 50,000 | 0.053 cents | $795 |
| Read an invoice into fields | 1,500, 250, 1,000 | 0.45 cents | $135 |
| Review a pull request | 25,000, 4,500, 50 | 7.7 cents | $116 |

## Cheaper models that score as well as Grok 4.5

- [Claude Haiku 5.5](https://tecyfy.com/prices/claude-haiku-5-5.md), Anthropic: $0.20 per million at 3:1, score 159
- [GPT-6 Luna](https://tecyfy.com/prices/gpt-6-luna.md), OpenAI: $0.20 per million at 3:1, score 156
- [DeepSeek V4.1 Flash](https://tecyfy.com/prices/deepseek-flash.md), DeepSeek: $0.525 per million at 3:1, score 156
- [Gemini 3.8 Flash](https://tecyfy.com/prices/gemini-3-8-flash.md), Google: $1.50 per million at 3:1, score 157

## Questions

### How much does Grok 4.5 cost?

Grok 4.5 costs $2 per million input tokens, the text it reads, and $6 per million output tokens, the text it writes, thinking included. On a mix of 3 tokens read for each 1 written, that is $3 per million.

### How much does cached input cost on Grok 4.5?

Text Grok 4.5 reads again from the cache costs $0.30 per million tokens, against $2 the first time. xAI lists no separate price for writing to the cache.

### Does Grok 4.5 have a batch price?

Not on xAI's price page, which lists no batch price for Grok 4.5. The cache still lowers the price of text it reads again.

### Does a long prompt cost more on Grok 4.5?

Yes. Once a prompt passes 200K tokens, the whole request costs $4 per million tokens read and $12 per million written, against $2 and $6 below that.

### How good is Grok 4.5?

Grok 4.5 scores 154 on the Epoch Capabilities Index, an independent score from Epoch AI that combines over 50 benchmarks, with a range of doubt from 152 to 156 (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 Grok 4.5?

Claude Haiku 5.5 from Anthropic scores 159 on the Epoch Capabilities Index, about as well or better, and costs $0.20 per million on a mix of 3 tokens read for each 1 written: Grok 4.5 costs 15 times as much. Test both on your own work before you switch.

### Should I still use Grok 4.5?

It is still sold, so it keeps working, but xAI's newest models are Grok 4.7. 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 Grok 4.5?

At 2,000 replies a day, each reading 4,000 tokens (50 percent of them from cache) and writing 300, a support bot costs 0.64 cents a reply on Grok 4.5, $384 a month.

### What does an AI agent task cost on Grok 4.5?

One 40-turn task that reads 2,800,000 tokens in all, 90 percent of them from cache, and writes 40,000, costs $1.56 on Grok 4.5. At 10 tasks a day that is $467 a month.

## Sources

- [xAI: API prices](https://docs.x.ai/docs/models)
- [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

- [Grok 4.5 vs Grok 4.7](https://tecyfy.com/prices/compare/grok-4-5-vs-grok-4-7.md)

## xAI's other models

- [Grok 4.7](https://tecyfy.com/prices/grok-4-7.md)
- [Grok 4.6](https://tecyfy.com/prices/grok-4-6.md)
- [Grok 4.3](https://tecyfy.com/prices/grok-4-3.md)
- [Grok 4.20 (reasoning)](https://tecyfy.com/prices/grok-4-20-0309-reasoning.md)
- [Grok 4.20 (non-reasoning)](https://tecyfy.com/prices/grok-4-20-0309-non-reasoning.md)
- [Grok Build 0.1](https://tecyfy.com/prices/grok-build-0-1.md)
- [Grok 4.20 Multi-agent](https://tecyfy.com/prices/grok-4-20-multi-agent-0309.md)