Episode Details

The U.S. government has lifted export bans on Anthropic’s Fable 5 and Mythos 5 AI models, restoring global access after an 18-day shutdown triggered by a discovered vulnerability exploit. Amazon researchers uncovered a method to prompt Fable 5 to reveal software flaws, forcing Anthropic to pause both models — though they claim other top models like GPT-5.5 can be similarly exploited. Anthropic’s new safety classifier now blocks 99% of such attempts, approved by the Commerce Department, and blocked requests are now redirected to Claude Opus 4.8. The timing hit a sensitive moment for Anthropic, amid IPO rumors and high valuation, while also exposing the AI industry’s lack of unified jailbreak response standards. To fix this, Anthropic is collaborating with Amazon and Microsoft to build a universal jailbreak severity rating system, launching a bug bounty program for security researchers, and offering early access to government partners for future models critical to national security.

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