# GPT-4o vs Claude Sonnet 4.6 (2026): Benchmarks, Price & Verdict | Alher Tech

> GPT-4o 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/gpt-4o-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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|  | GPT-4o | Claude Sonnet 4.6 |
| --- | --- | --- |
| arenaElo | 1345 | 1358 |
| humanEval | 90.2 | 89 |
| sweBench | 33 | 60 |
| mmlu | 88.7 | 88.7 |
| gpqa | 53.6 | 59.4 |
| aime | 42 | 80 |
| Price in/out ($/M) | $2.5 / $10 | $3 / $15 |

## Our verdict

Claude Sonnet 4.6 beats GPT-4o on every benchmark and costs less per token. GPT-4o still wins when you need native audio I/O. Default to Sonnet 4.6 for new builds; keep GPT-4o if you already depend on its Realtime API.

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