Anthropic suspended access to its two most powerful AI models, Fable 5 and Mythos 5, for all customers on June 12 after the Department of Commerce imposed export controls requiring Anthropic to block access for foreign nationals, including its own foreign employees. The Department of Commerce's order reportedly came after Amazon shared a report with the Trump administration detailing a jailbreak that enabled access to Mythos 5 in a way that threatened U.S. national security, triggering White House concern about China's access to the model.