Federal Reserve Chairman Jerome Powell and Treasury Secretary Scott Bessent met with major U.S. bank CEOs this week to discuss the possible cyber risks raised by Anthropic’s Mythos model, CNBC confirmed Friday.

The bank heads were already in Washington, D.C., for a Financial Services Forum board meeting, but a special gathering was called to discuss Mythos, according to people familiar with the matter, who asked not to be named in order to share information about a confidential matter.

Bloomberg and the Financial Times were first to report the special meeting.

Earlier this week, Anthropic rolled out the new artificial intelligence model, Claude Mythos Preview, in a limited capacity due to concerns that hackers could exploit its capabilities.

Banking giant JPMorgan Chase