Anthropic’s Mythos Model Finds Thousands of Zero-Days — Then Gets Locked Behind a 40-Org Consortium

Visualisation of AI-assisted vulnerability discovery across a software dependency graph — illustrating Anthropic Mythos cybersecurity research

5 min readAnthropic has previewed a frontier model that autonomously discovered thousands of previously unknown software vulnerabilities across every major operating system and browser — and then decided not to release it. Anthropic Mythos, which scored 83.1% on cybersecurity benchmarks in internal red-team testing, will instead be deployed exclusively through Project Glasswing, a restricted consortium of 40+ …

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