Misanthropic: on Mythos, bad human behaviors and systems vulnerabilities

J.P. Morgan Asset Management

Michael Cembalest

Research

8 Pages

J.P. Morgan examines Anthropic’s new Mythos model and what its cyber capabilities imply for software, infrastructure, and security spending. The note highlights a 72% shell exploitation success rate on Firefox zero days and frames AI as both a productivity leap and a systems vulnerability shock.

Key Takeaways

Cyber Capability Jump: Mythos achieved a 100% score on Anthropic’s CyBench benchmark and scored 83% on CyberGym versus 67% for Opus 4.6.
Zero Day Risk Rose: On Firefox zero day testing, Mythos posted a 72% shell exploitation success rate versus 1% for Opus 4.6 and 0% for Sonnet 4.6.
Defense Spending Follows: Project Glasswing includes 12 partner organizations, while Anthropic extended access to 40+ more groups and offered $100 million in usage credits.
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