The Trump government has banned non-US citizens from accessing Fable and Mythos.

Anthropic said it received a government directive banning all foreign nationals, even those working at Anthropic, from accessing Fable 5 and Mythos 5 over national security…

The Commerce Department instructed Anthropic to suspend access to Fable 5 and Mythos 5 for any foreign national, which Anthropic said requires disabling the models entirely.