Rohan Paul

METR had a separate team with deeper access to Anthropic’s internal AI R&D data. That team shared its conclusions with the public-assessment team, but not the supporting evidence or reasoning behind them. - from Claude Opus 5.5 system card. i.e. part of the public assessment of Anthropic's AI-driven R&D acceleration rests on evidence outsiders, and, in this particular case, even another METR team, could not independently inspect.