METR finds Anthropic may have crossed its own AI acceleration warning threshold back in July

Nonprofit METR spent eleven weeks auditing Anthropic's internal research data and concluded that the pace of model development has roughly doubled, with about 80 percent of the speedup driven by AI-assisted research. Anthropic redacted the most informative evidence, though, which means the public has to rely on METR's judgment "much more than would be ideal.

Summary drawn from The Decoder's own description of the story.