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Claude Fable 5 and Mythos 5 are gone. The reason? A US government directive.
As of 5:12 p.m. ET on Friday evening, Fable 5 and Mythos 5 are no longer available... to anyone, anywhere. To be clear, other Claude models are still available.
According to an announcement by Anthropic, the "US government, citing national security authorities" issued an export directive requiring Anthropic to disable access to the two models by "any foreign national, whether inside or outside the United States, including foreign national Anthropic employees."