# GPT-5.5 vs Claude Opus 4.7 (2026): Benchmarks, Price & Verdict | Alher Tech

> GPT-5.5 vs Claude Opus 4.7: 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-5-5-vs-claude-opus-4-7/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

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|  | GPT-5.5 | Claude Opus 4.7 |
| --- | --- | --- |
| arenaElo | 1432 | 1420 |
| humanEval | 94.2 | 93.1 |
| sweBench | 66 | 64.3 |
| mmlu | 93 | 92.3 |
| gpqa | 68.7 | 65.2 |
| aime | 92 | 88 |
| Price in/out ($/M) | $12 / $48 | $15 / $75 |

## Our verdict

GPT-5.5 edges Opus 4.7 on Arena Elo and HumanEval by a hair, while Opus 4.7 still holds the 1M context crown and long-horizon agent stability. For voice + multimodal, GPT-5.5. For coding agents and long-doc legal work, Opus 4.7.

[GPT-5.5](https://alhertech.com/en/ai-comparison/gpt-5-5/) · [Claude Opus 4.7](https://alhertech.com/en/ai-comparison/claude-opus-4-7/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)