Future of Life Institute — Grant Received: $665.8 million

Note: The Wikipedia source directly states FLI's endowment as '$665.8 million (in 2021)', which matches the claim's figure of $666M (rounded) as of 2021. The additional context about Vitalik Buterin's SHIB token donation of $665.8M in May 2021 aligns with this endowment figure. The source confirms the core claim about the grant/endowment amount and timing. The subsequent detail about ~$500M being cashed out in March 2026 is not contradicted by the source (which only reports the 2021 figure) and represents a later development.