> These “primitives”—simple, foundational measures of how Claude is used, which we generate by asking Claude specific questions about anonymized Claude.ai and first-party (1P) API transcripts

I just skimmed but is there any manual verification / human statistical analysis done on this or we just taking Claude’s word for it?

Looks like they are relying on Claude for it, which is interesting. I bet social scientists are going to love this approach