# OpenAI o3 vs Claude Opus 4.7 (2026): Benchmarks, Price & Verdict | Alher Tech

> OpenAI o3 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/o3-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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|  | OpenAI o3 | Claude Opus 4.7 |
| --- | --- | --- |
| arenaElo | 1418 | 1420 |
| humanEval | 92.4 | 93.1 |
| sweBench | 69.1 | 64.3 |
| mmlu | 90.2 | 92.3 |
| gpqa | 83.3 | 65.2 |
| aime | 91.6 | 88 |
| Price in/out ($/M) | $2 / $8 | $5 / $25 |

## Our verdict

o3 is the sharper reasoner on GPQA (83.3 vs 65.2) but thinks for seconds to minutes per answer. Claude Opus 4.7 is faster, has a 5× bigger context window and stronger long-horizon agent reliability. Pick o3 for one-shot hard problems; Opus 4.7 for interactive agents and code that must ship.

[OpenAI o3](https://alhertech.com/en/ai-comparison/o3/) · [Claude Opus 4.7](https://alhertech.com/en/ai-comparison/claude-opus-4-7/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)