RegulationThe Decoder·July 1, 2026

Anthropic's Fable 5 is back worldwide after a two-week government ban over a jailbreak

After a two-week ban, the US government is letting Anthropic ship Fable 5 globally again. Amazon researchers had found a jailbreak, but Anthropic says even much smaller models like Claude Haiku 4.5 could pull off the same exploit. A new safety classifier blocks the technique in over 99 percent of cases, though it also flags more harmless requests in the process. The article Anthropic's Fable 5 is…

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