METR Estimates Anthropic’s Model Capability Growth Has Nearly Doubled

METR published an independent assessment on November 5, 2026, judging that Anthropic is likely improving model capabilities on well-specified tasks at around twice its earlier rate and that AI use likely explains a majority of the current acceleration. The conclusions carry substantial uncertainty, and redactions conceal much of the supporting evidence. Benchmark Evidence Shows a Steeper Trend Using AECI, Anthropic's benchmark capability index, METR estimated that benchmark scores have grown...