AnalysisAI ModelsNovember 5, 2026

METR: Anthropic AI progress accelerating to ~1.9x, driven by AI

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METR's October 2026 assessment estimates Anthropic is improving model capabilities about twice as fast as before, with benchmark data from unreleased internal models pushing its acceleration estimate to 1.9x versus the 1.7x in Haiku 5.5's system card. METR found no clear bottlenecks preventing further acceleration.

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