# Claude Haiku 5.5 vs Claude Opus 4.5

Claude Haiku 5.5 is one of Anthropic's newest models and Claude Opus 4.5 an earlier one, so this is also what moving up costs or saves. Claude Haiku 5.5 is the cheaper of the 2: for the same tokens, 3 read for each 1 written, Claude Opus 4.5 costs 50 times as much. Below are both price lists, what 8 everyday jobs cost a month on each, and how many tokens the same text takes on each, which can change the answer.

- Page, with a calculator for your own job: https://tecyfy.com/prices/compare/claude-haiku-5-5-vs-claude-opus-4-5
- Makers: Claude Haiku 5.5 from Anthropic, Claude Opus 4.5 from Anthropic

## Price per million tokens, in US dollars

| | Claude Haiku 5.5 | Claude Opus 4.5 |
| --- | --: | --: |
| Input | $0.10 | $5 |
| Cached input | $0.01 | $0.50 |
| Cache write | $0.125 | $6.25 |
| Output | $0.50 | $25 |
| Blend, 3 read for each 1 written | $0.20 | $10 |
| Batch input | $0.05 | $2.50 |
| Batch output | $0.25 | $12.50 |
| Long prompt input (above 100K on Claude Haiku 5.5) | $0.50 | $5 |
| Long prompt output | $2.50 | $25 |
| Context window, tokens | 1M | 200K |
| Capability score (Epoch Capabilities Index; GPT-5 is 150) | 159 | 150 |
| Longest answer, tokens | 128K | 64K |

## What 8 everyday jobs cost a month on each

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

| Job | Tokens in, out, runs a day | Claude Haiku 5.5 | Claude Opus 4.5 |
| --- | --- | --: | --: |
| A chat question | 300, 500, 100 | 84 cents | $42.00 |
| A hard question, with thinking | 300, 1,400, 100 | $2.19 | $110 |
| A long report, summarised | 60,000, 2,000, 20 | $4.20 | $210 |
| A 40-turn agent task | 2,800,000, 40,000, 10 | $21.96 | $1,098 |
| A support bot's reply | 4,000, 300, 2,000 | $22.20 | $1,110 |
| Sort a message into a category | 250, 5, 50,000 | $41.25 | $2,063 |
| Read an invoice into fields | 1,500, 250, 1,000 | $8.25 | $413 |
| Review a pull request | 25,000, 4,500, 50 | $7.13 | $356 |

## Questions

### Which is cheaper, Claude Haiku 5.5 or Claude Opus 4.5?

Claude Haiku 5.5 is cheaper: $0.10 per million tokens read and $0.50 per million written, against $5 and $25 on Claude Opus 4.5. On a mix of 3 tokens read for each 1 written, Claude Opus 4.5 costs 50 times as much.

### Which is better, Claude Haiku 5.5 or Claude Opus 4.5?

On the Epoch Capabilities Index, an independent score from Epoch AI that combines over 50 benchmarks, Claude Haiku 5.5 scores 159 and Claude Opus 4.5 150, above the top of the range of doubt around Claude Opus 4.5's score (GPT-5 is 150). One score is an average; test both on your own work before you switch.

### What does a support bot cost a month on Claude Haiku 5.5 and Claude Opus 4.5?

At 2,000 replies a day, each reading 4,000 tokens (50 percent of them from cache) and writing 300, it costs $22.20 a month on Claude Haiku 5.5 and $1,110 on Claude Opus 4.5: Claude Opus 4.5 costs 50 times as much for this job.

### What does an AI agent task cost on Claude Haiku 5.5 and Claude Opus 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 7.3 cents on Claude Haiku 5.5 and $3.66 on Claude Opus 4.5. At 10 tasks a day that is $21.96 and $1,098 a month.

### Which has the larger context window, Claude Haiku 5.5 or Claude Opus 4.5?

Claude Haiku 5.5, with 1M tokens against 200K on Claude Opus 4.5. The window holds your instructions, the files you attach, the conversation so far and the answer, all at once.

### Does the same text take the same number of tokens on Claude Haiku 5.5 and Claude Opus 4.5?

Yes, both are counted the same way: our lesson "How AI writes", 1,700 words long, is about 2,100 to 3,600 tokens on each.

### Is it cheaper to move from Claude Opus 4.5 to Claude Haiku 5.5?

Yes, per token: Claude Haiku 5.5 costs $0.10 per million tokens read and $0.50 written, against $5 and $25 on Claude Opus 4.5, which costs 50 times as much for the same tokens. Run your own tasks on it before you switch, since answers, length and thinking can differ.

### Can I pay less on Claude Haiku 5.5 and Claude Opus 4.5 for work that can wait?

Yes, on both. With a batch, where you collect the answers later instead of at once, Claude Haiku 5.5 costs $0.05 per million tokens read and $0.25 written, and Claude Opus 4.5 $2.50 and $12.50.

## Sources

- [Anthropic: API prices](https://platform.claude.com/docs/en/about-claude/pricing)
- [Epoch Capabilities Index, by Epoch AI (CC BY 4.0)](https://epoch.ai/benchmarks/eci)

## Other comparisons

- [Claude Haiku 5.5 vs Claude Mythos 5.1](https://tecyfy.com/prices/compare/claude-haiku-5-5-vs-claude-mythos-5-1.md)
- [Claude Fable 5 vs Claude Haiku 5.5](https://tecyfy.com/prices/compare/claude-fable-5-vs-claude-haiku-5-5.md)
- [Claude Haiku 5.5 vs Claude Mythos 5](https://tecyfy.com/prices/compare/claude-haiku-5-5-vs-claude-mythos-5.md)
- [Claude Haiku 5.5 vs Claude Opus 5](https://tecyfy.com/prices/compare/claude-haiku-5-5-vs-claude-opus-5.md)
- [Claude Haiku 5.5 vs Claude Opus 4.8](https://tecyfy.com/prices/compare/claude-haiku-5-5-vs-claude-opus-4-8.md)
- [Claude Haiku 5.5 vs Claude Opus 4.7](https://tecyfy.com/prices/compare/claude-haiku-5-5-vs-claude-opus-4-7.md)