Anthropic says internal and external red team tests of Fable 5 found no universal jailbreaks; it will keep user traffic for 30 days, aligning with Trump's AI EO (Derek B. Johnson/CyberScoop)

Jun 09, 2026 - 18:50
Updated: 3 hours ago
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Red team testing for Anthropic Fable 5 found no universal jailbreaks during internal and external security reviews.

Derek B. Johnson / CyberScoop:
Anthropic says internal and external red team tests of Fable 5 found no universal jailbreaks; it will keep user traffic for 30 days, aligning with Trump's AI EO  —  Claude Fable 5 offers Mythos-level performance for most tasks with safeguards on sensitive topics.  Anthropic claims testing found no universal jailbreaks.

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Christopher Holloway

Christopher Holloway is the founder and director of Progressive Robot, a UK-based technology company. A full-stack engineer with more than two decades of experience, he works across PHP development, ecommerce, Linux infrastructure, technical SEO and AI automation, and writes here on technology, AI, hardware and software.

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