US govt orders Anthropic to suspend Fable 5 and Mythos 5

The US government issued an export control directive to suspend access to Anthropic's Fable 5 and Mythos 5 models by foreign nationals, citing national security. Anthropic received the directive at 5:21pm ET on June 12, 2026, and must disable the models. The government alleges a jailbreak technique, but Anthropic argues it is widely available and the vulnerabilities are minor.