The Federal Reserve lacked access to an advanced AI model known as Claude Mythos Preview for at least three months. That gap in access came after the Fed convened an extraordinary meeting to warn banks the model could pose a major cybersecurity risk. Other institutions have used the time to begin patching their vulnerabilities. The Fed declined to comment for this article. It isn't clear whether it has since gained access to the AI model. Federal Reserve Chairman Kevin Warsh testifies during the Senate Banking, Housing and Urban Affairs Committee hearing titled "The Semiannual Monetary Policy Report to the Congress,"…