US AI Safety Institute (now CAISI) — Headcount: 20–30

NoteThe claim states CAISI has 20–30 employees as of April 2026, with a note that 'CAISI does not publish headcount.' The source is the official CAISI careers page dated February 3–4, 2026 (slightly before the April 2026 claim date). The source confirms six technical teams exist and lists approximately a dozen open positions, which aligns with the additional context provided. However, the source itself contains no explicit headcount figure—neither current employees nor total staff size. The claim's estimate of 20–30 employees cannot be directly verified or contradicted by the source text. The source is consistent with the claim's assertion that headcount is not published, and the hiring activity described is consistent with an organization of that size, but no direct confirmation of the 20–30 figure appears in the source.