# Claude Sonnet 4.6 vs Claude Haiku 4.5 (2026): Benchmarks, Price & Verdict | Alher Tech

> Claude Sonnet 4.6 vs Claude Haiku 4.5: head-to-head 2026 comparison across Arena Elo, MMLU, GPQA, HumanEval, context window and pricing. Verdict + use cases.

- Canonical page: https://alhertech.com/en/ai-comparison/claude-sonnet-4-6-vs-claude-haiku-4-5/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

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|  | Claude Sonnet 4.6 | Claude Haiku 4.5 |
| --- | --- | --- |
| arenaElo | 1358 | 1274 |
| humanEval | 89 | 78.2 |
| sweBench | 60 | 40.6 |
| mmlu | 88.7 | 81.5 |
| gpqa | 59.4 | 48 |
| aime | 80 | 60 |
| Price in/out ($/M) | $3 / $15 | $1 / $5 |

## Our verdict

Haiku 4.5 is 3× cheaper and 2× faster than Sonnet 4.6 but gives up ~10 HumanEval points and ~11 GPQA points. Use Haiku for high-volume classification, routing and short chat; escalate to Sonnet whenever quality visibly matters to the end user.

[Claude Sonnet 4.6](https://alhertech.com/en/ai-comparison/claude-sonnet-4-6/) · [Claude Haiku 4.5](https://alhertech.com/en/ai-comparison/claude-haiku-4-5/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)