# GPT-5.4 Codex vs Claude Opus 4.7 (2026): Benchmarks, Price & Verdict | Alher Tech

> GPT-5.4 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-5-4-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-5.4 Codex | Claude Opus 4.7 |
| --- | --- | --- |
| arenaElo | 1408 | 1420 |
| humanEval | 95.5 | 93.1 |
| sweBench | 70 | 64.3 |
| mmlu | 88.6 | 92.3 |
| gpqa | 60.8 | 65.2 |
| aime | 86 | 88 |
| Price in/out ($/M) | $9 / $36 | $15 / $75 |

## Our verdict

5.4 Codex holds the HumanEval crown (95.5 vs 93.1) and is cheaper per token. Opus 4.7 compensates with 2.5× the context and stronger long-horizon agents. Specialized code pipelines: Codex. General coding agents that also reason and plan: Opus.

[GPT-5.4 Codex](https://alhertech.com/en/ai-comparison/gpt-5-4-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/)