Claude Mythos Preview

Preview model from Anthropic, surfaced via OpenReward ahead of a public release. Not yet part of Anthropic's officially released lineup.

Publisher: Anthropic
Family: Claude
Context: 200K
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Benchmark scores: Anthropic OpenReward

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Context

200K

Reported on 8 evals across 7 domains - best 85.4% on OSWorld-Verified · #1 of 16

Reported eval scores

8

SWE Bench Multilingual87.3

OSWorld-Verified85.4

Humanity's Last Exam (HLE)64.7

Swebenchpro77.8

HealthBench: Evaluating Large Language Models Towards Improved Human Health64.7

BioMysteryBench82.6