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

> Claude Opus 4.6 vs Claude Sonnet 4.6: 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-opus-4-6-vs-claude-sonnet-4-6/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

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|  | Claude Opus 4.6 | Claude Sonnet 4.6 |
| --- | --- | --- |
| arenaElo | 1402 | 1358 |
| humanEval | 91.4 | 89 |
| sweBench | 53.4 | 60 |
| mmlu | 90.8 | 88.7 |
| gpqa | 62.1 | 59.4 |
| aime | 84 | 80 |
| Price in/out ($/M) | $15 / $75 | $3 / $15 |

## Our verdict

Opus 4.6 still beats Sonnet 4.6 on raw reasoning, but the gap is small and Sonnet costs 5× less. Unless you already validated Opus 4.6 in production or need its 500K context, default to Sonnet 4.6.

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