Vidur Kapur — Notable For: Superforecaster affiliated with Good Judgment, Swift Centre, Samotsvety, and RAND; AI policy researcher at ControlAI; key member of Sentinel early warning system for global catastrophes

NoteThe source confirms most elements of the claim: Vidur Kapur is identified as a Superforecaster affiliated with Good Judgment, Swift Centre, Samotsvety, and RAND, and is associated with Sentinel. However, the source does NOT mention his role as 'AI policy researcher at ControlAI' — this is unverifiable from the provided text. The source also does not explicitly describe him as a 'key member' of Sentinel's early warning system, though his association with Sentinel is confirmed. The temporal marker 'as of 2026-03' cannot be verified from this source, though the recent posts shown are dated 2026, suggesting the profile is current as of that period. The claim is partially confirmed but incomplete relative to the source's scope.