Future of Life Institute (FLI) — Grant Received: $666M

NoteThe source directly confirms the exact endowment figure of $665.8 million as of 2021, which matches the claim's exact stored value (665,800,000). The source also references Vitalik Buterin's funding in July 2021, consistent with the claim's context about the May 2021 donation. The claim's additional context about ~$500M being cashed out in March 2026 and transfer to a donor-advised fund is not addressed in the source, but the core claim about the $665.8M endowment as of 2021 is directly confirmed by the Wikipedia article's infobox and citation.