US orders Anthropic to shut down Fable 5 and Mythos 5

This article was published on June 13, 2026 Washington invoked export controls to force the shutdown of Anthropic’s most powerful models over a disputed jailbreak, just three days after launch. Anthropic is pushing back hard. TL;DRThe US government issued an export control directive on 12 June ordering Anthropic to suspend access to Fable 5 and Mythos 5, citing national security concerns over a reported jailbreak. Anthropic complied but pushed back publicly, calling the action disproportionate and warning it would halt all frontier model deployments if applied industry-wide. The unprecedented recall came just three days after Fable 5 launched. The US government issued an export control directive on 12 June ordering Anthropic to suspend access to Fable 5 and Mythos 5, citing national security concerns over a reported jailbreak. Anthropic complied but pushed back publicly, calling the action disproportionate and warning it would halt all frontier model deployments if applied industry-wide. The unprecedented recall came just three days after Fable 5 launched. The US government has ordered Anthropic to suspend access to its two most capable AI models, Fable 5 and Mythos 5, in what appe