Anthropic's Mythos is evolving faster than expected, reports AI safety agency
ID: 1c4f5f5c-4cc6-5c74-8585-66b5e5d4b212
STIX ID: report--1c4f5f5c-4cc6-5c74-8585-66b5e5d4b212
Feed Name: ZDNet Security
ZDNET reports that the UK AI Security Institute's updated testing found Anthropic's Claude Mythos Preview has advanced cyber capabilities, completing previously unsolved cyber-range tasks and outperforming GPT-5.5; the piece highlights rapidly accelerating AI performance on cybersecurity tasks, testing limitations (token caps), and uncertainty about long-term trends and real-world impact.
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