REUTERS Anthropic said it also hired cybersecurity veteran Chris Rohlf to join its frontier red team, which tests advanced AI models against threats. Rohlf previously was security engineering director at Meta. San Francisco-based Anthropic has morphed into the current AI darling as the popularity of its Claude tools has sent revenue surging and investors scrambling to scoop up shares. Its powerful new Mythos model has also whipped up excitement – and anxieties – over the power and risks of emerging AI tools. The Post reported last month that one Silicon Valley dealmaker was so desperate for Anthropic stock that he was seeking to swap his 14-acre estate for shares of the AI giant. Karpathy will serve on Nicholas Joseph’s pre-training team. “He’ll be building a team focused on using Claude to accelerate pretraining research itself,” Joseph posted on X. “I can’t think of anyone better suited to do it — looking forward to what we build together!” Filed under