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

NoteThe claim states CAISI headcount is 20–30 employees as of April 2026, with the additional context noting 'CAISI does not publish headcount' and that the careers page lists 'roughly a dozen open positions.' The source document (dated February 3–4, 2026, updated before the April 2026 claim date) confirms the six teams exist and shows multiple open positions, but does NOT provide actual headcount data. The claim's own context acknowledges this is a 'rough estimate' based on inference from the hiring activity. Since the source does not publish headcount and does not provide enough information to verify the 20–30 range (only that there are open positions), the claim cannot be confirmed or contradicted by this source—it is unverifiable from the provided text.