Why Anthropic suddenly pulled Fable 5 and Mythos 5 for everyone

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ZDNET's key takeaways

• Anthropic pulled Fable 5 and Mythos 5 worldwide.
• The US cited national security but gave few details.
• Anthropic said the jailbreak claim is narrow and disputed.

As of 5:12 p.m. ET on Friday evening, Fable 5 and Mythos 5 were 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.

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