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Why the US Government Pulled Fable 5: Four Theories
A narrow jailbreak that other models can match does not get a frontier model recalled. So what actually happened? The plausible explanations, ranked.
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The US government ordered Anthropic to suspend Fable 5 and Mythos 5 for ALL users after a narrow jailbreak finding. Here is what happened, why it hit everyone, and what changed for developers overnight.

A narrow jailbreak that other models can match does not get a frontier model recalled. So what actually happened? The plausible explanations, ranked.
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