# Claude Fable 5 vs GPT-5.5 (2026): Benchmarks, Price & Verdict | Alher Tech

> Claude Fable 5 vs GPT-5.5: 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/claude-fable-5-vs-gpt-5-5/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

---

|  | Claude Fable 5 | GPT-5.5 |
| --- | --- | --- |
| arenaElo | 1492 | 1432 |
| humanEval | 98 | 94.2 |
| sweBench | 77 | 66 |
| mmlu | 95.1 | 93 |
| gpqa | 92 | 68.7 |
| aime | 94 | 92 |
| Price in/out ($/M) | $10 / $50 | $12 / $48 |

## Our verdict

Fable 5 leads on long-horizon autonomous agents, frontier reasoning and coding, and now ships generally available. GPT-5.5 keeps the multimodal edge (native audio and video) that Fable 5 does not match, plus a more mature tool-calling ecosystem. For agentic coding and research, Fable 5; for voice-first multimodal products, GPT-5.5. Benchmark both on your real workload before committing.

[Claude Fable 5](https://alhertech.com/en/ai-comparison/claude-fable-5/) · [GPT-5.5](https://alhertech.com/en/ai-comparison/gpt-5-5/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)