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 this is a rough estimate and CAISI does not publish headcount. The source (dated February 3–4, 2026, updated before the April 2026 claim date) confirms that CAISI does not publish headcount and lists the six teams and open positions mentioned in the context. However, the source provides no actual headcount figure—neither current nor projected. The claim's estimate of 20–30 employees cannot be verified or contradicted by this source, as the source explicitly does not disclose headcount. The presence of roughly a dozen open positions is consistent with the context provided, but does not allow verification of the total headcount estimate.