Anthropic Releases Claude Fable 5, Its Most Powerful AI Yet, With Cyber Safeguards
Summary: On June 9, Anthropic released Claude Fable 5, its most capable model, alongside Claude Mythos 5, the same underlying model with cyber safeguards lifted and restricted to vetted cyber defenders and critical infrastructure operators. Fable 5 routes flagged cyber, biology, chemistry, and distillation requests to the weaker Claude Opus 4.8, and Anthropic says fallback fires in under 5% of all sessions.
What you should know: During testing, Mythos Preview found and exploited zero-day vulnerabilities in every major operating system and every major web browser, and built working Linux privilege-escalation exploits from a disclosed CVE and its patch in under a day each at a few thousand dollars or less in compute. In Project Glasswing's first weeks, Anthropic and roughly 50 partners found more than ten thousand high- or critical-severity vulnerabilities, while a high- or critical-severity bug takes about two weeks to patch on average.
Read the original at The Hacker News ↗
- Topics
- OT / ICS & Critical Infrastructure
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