METR's Anthropic audit: AI R&D likely running about 2x faster, ~80% of the speedup from AI — key evidence redacted
An independent METR assessment, built on Anthropic's internal data, estimates the lab is now improving its models on well-specified tasks at roughly twice its pre-October-2025 pace, mostly because of its own AI tools. Anthropic redacted most of the evidence METR found most informative, so outsiders can't check the numbers.