Model Comparison
Pick up to 4 models and compare them across every metric we track.
| Metric | Claude Mythos Preview | Claude Fable 5 | Claude Fable 5.1 |
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| Provider | Anthropic | Anthropic | Anthropic |
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| License | Proprietary | Proprietary | Proprietary |
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| Podium Score | 97.4 | 93.4 | 88.4 |
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| Overall rank | 1 | 2 | 999 |
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| Arena Elo | — | 1509 | — |
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| Intelligence Index | — | 60.0 | — |
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| coding Coding | 80.9 | 84.1 | 95.5 |
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| math Math | 100.0 | — | — |
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| reasoning Reasoning | 98.8 | 81.0 | 92.0 |
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| agentic Agentic | — | 96.2 | — |
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| knowledge Knowledge | 100.0 | 43.3 | 58.0 |
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| multimodal Multimodal | 100.0 | — | 62.0 |
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| long-context Long Context | — | 99.2 | — |
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| speed Speed | — | 10.2 | 45.0 |
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| value Value | — | 71.4 | 75.0 |
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| Speed | 80 t/s | 71 t/s | 85 t/s |
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| Time to First Token | — | 141 ms | 350 ms |
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| Input Price ($/M) | $3/M | $10/M | $3/M |
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| Output Price ($/M) | $15/M | $50/M | $15/M |
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| Context Window | 1000K | 1000K | 500K |
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| SWE-Bench Verified | 93.9% | 95% | — |
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| GPQA Diamond | 94.6% | 92.6% | — |
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| Multilingual MMLU | 92.7% | — | — |
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| Browsecomp | 86.9% | — | — |
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| CharXiv Reasoning | 93.2% | — | — |
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| Humanity’s Last Exam | 64.7% | 53.3% | — |
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| SWE-Bench Pro | 77.8% | — | — |
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| SciCode | — | 60.2% | — |
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| LiveCodeBench | — | 70% | — |
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| Ifbench | — | 63.5% | — |
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| τ²-Bench Retail | — | 98.5% | — |
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| Terminal-Bench Hard | — | 62.9% | — |
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| FrontierMath | — | — | — |
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| OSWorld | — | — | — |
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| MMMU-Pro | — | — | — |
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| MRCR v2 | — | — | — |
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| MCP Atlas | — | — | — |
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| Toolathlon | — | — | — |
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| Apex Agents | — | — | — |
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| ScreenSpot-Pro | — | — | — |
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| AIME 2025 | — | — | — |
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| ARC-AGI-2 | — | — | — |
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| Mmlupro | — | — | — |
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| SimpleQA | — | — | — |
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| MMLU-Pro | — | — | — |
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| Ifeval | — | — | — |
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| MATH | — | — | — |
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| Aime2025 | — | — | — |
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| Math500 | — | — | — |
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| GpqaDiamond | — | — | — |
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| Mmlu | — | — | — |
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| IntelligencePerDollar | — | — | — |
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| OutputSpeed | — | — | — |
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| ContextWindowSize | — | — | — |
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| ArenaHard | — | — | — |
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| MMMU | — | — | — |
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| HumanEval | — | — | — |
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