Claude Sonnet 5.5 and GPT-6 Astra tie at 41.7% on medical benchmark via opposite strengths

ArtificialAnlys · x · 2026-10-21

MLCR-AA requires both completeness and accuracy. Claude Opus 5.5 (max with fallback) reaches 63.3% completeness at just 37.2% accuracy; GPT-6.1 Sol (max) hits 96.7% accuracy at 40.0% completeness.

The co-leaders get to 41.7% differently: Claude Sonnet 5.5 (max with fallback) via 64.8% completeness and 60.9% accuracy, GPT-6 Astra (max) via 95.6% accuracy and 42.2% completeness.

Related event: MLCR-AA Medical Long-Context Benchmark Update: Claude Sonnet 5.5 Ties GPT-6 Astra at the Top(7 posts)→

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