Muse 'Watermelon' benchmarks leak: near-frontier scores vs Claude Opus 5.5

brandon_galang · x · 2026-10-13

A leaked/shared benchmark chart for Muse's 'Watermelon' models shows Muse Wonder Full (max) scoring 59.1 on the Personal Superintelligence Index, beating Claude Fable 5.1 (49.9), GPT-6 Astra (54.5) and Claude Opus 5.5 (55.2), with leads on Harvey LAB-AA (13.1), AutomationBench-AA (45.4), DeepSWE 1.1 (79.0) and SWE-Marathon (57.5). The poster argues Muse speedran the frontier faster than xAI did with Grok 4, though it likely still trails Anthropic's in-progress models — and cautions the results may be benchmaxxed. Note: post includes a referral promo code.

Related event: Meta Unveils Muse Wonder, Its Most Capable Agentic Frontier Model(88 posts)→

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