What happened
Anthropic launched Project Glasswing on April 7, providing restricted access to Claude Mythos Preview—a frontier model with exceptional vulnerability-finding capabilities—to a coalition of 40+ organisations including Apple, Amazon, Microsoft, Google, and major cybersecurity firms. Anthropic committed $100M in usage credits and $4M in donations to open-source security.
Why it matters
Mythos Preview has identified thousands of previously unknown zero-day vulnerabilities in every major OS and browser. This represents a paradigm shift where frontier AI models are deployed defensively to find and patch critical flaws before adversaries exploit them.
Applicability
Critical infrastructure operators, major software vendors, open-source maintainers, and government cybersecurity teams. Organisations maintaining critical codebases should evaluate whether they qualify for Glasswing access.