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

> Claude Opus 5 vs Claude Fable 5: head-to-head 2026 comparison across Arena Elo, MMLU, GPQA, HumanEval, context window and pricing. Verdict + use cases.

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|  | Claude Opus 5 | Claude Fable 5 |
| --- | --- | --- |
| arenaElo |  | 1492 |
| humanEval |  | 98 |
| sweBench | 97 | 77 |
| mmlu |  | 95.1 |
| gpqa |  | 92 |
| aime |  | 94 |
| Price in/out ($/M) | $5 / $25 | $10 / $50 |

## Our verdict

Opus 5 takes the overall lead: 43.3% on Frontier-Bench v0.1 vs 33.7% for Fable 5, a GDPval-AA v2 Elo of 1861 vs 1747, 70.6% vs 66.1% on OSWorld 2.0 and an Artificial Analysis Intelligence Index of 61 at max effort, the highest in the world. It does all of this at $5 / $25 per M tokens, half of Fable 5's $10 / $50. Fable 5 keeps a narrow edge on DeepSWE v1.1 (69.7% vs 68.8%), but for coding, agentic knowledge work and computer use, Opus 5 is the new default. Benchmark both on your real workload before committing.

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