# GPT-5 Codex vs Claude Opus 4.7 (2026): Benchmarks, Price & Verdict | Alher Tech

> GPT-5 Codex 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-codex-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 Codex | Claude Opus 4.7 |
| --- | --- | --- |
| arenaElo | 1395 | 1420 |
| humanEval | 94.8 | 93.1 |
| sweBench | 68 | 64.3 |
| mmlu | 87.2 | 92.3 |
| gpqa | 58.4 | 65.2 |
| aime | 85 | 88 |
| Price in/out ($/M) | $8 / $32 | $15 / $75 |

## Our verdict

GPT-5 Codex leads HumanEval by a nose (94.8 vs 93.1) and is cheaper. Opus 4.7 has a larger context (1M vs 400K) and better agent stability over multi-hour runs. For one-shot PRs, Codex. For repo-wide refactors and agents, Opus.

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