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

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

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|  | Claude Fable 5 | Claude Mythos |
| --- | --- | --- |
| arenaElo | 1492 | 1478 |
| humanEval | 98 | 98.7 |
| sweBench | 77 | 93.9 |
| mmlu | 95.1 | 94.2 |
| gpqa | 92 | 94.6 |
| aime | 94 | 97.6 |
| Price in/out ($/M) | $10 / $50 | $25 / $125 |

## Our verdict

Mythos Preview was the gated research frontier at $25 / $125 per M tokens. Fable 5 brings that frontier tier to general availability at $10 / $50, less than half the price and no Project Glasswing seat required. For anyone who wanted Mythos-class capability but could not get access, Fable 5 is the answer; the Mythos line now continues as the Glasswing-only Mythos 5.

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