Miles Brundage posted a tweet that reads, "How long til Obama is a member of technical staff at Anthropic." Engineer Ben Anderson replied to the post with the words "oh you haven't heard." The two messages form a brief public exchange on the platform. Brundage is described in the post as an AI policy researcher and executive director of a nonprofit focused on third-party auditing of frontier AI systems. Anderson is described as a computer scientist and AI startup founder based in the Bay Area.