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."

Also: Claude Fable 5 secretly throttled AI researchers, and the internet went wild

The net effect was that Anthropic disabled Fable 5 and Mythos 5 for everyone, both inside and outside of the US.

You can see the effect of that in my Claude Code session. When I launched the session with Claude Fable 5 selected, Claude responded that "Claude Fable 5 is currently unavailable." It then described the problem as "There's an issue with the selected model (claude-fable-5). It may not exist or you may not have access to it."

The blurred-out section is the result of the startup process talking about my coding config, which isn't all that interesting in the current context.