Anthropic Expands Project Glasswing from 50 to 200 Partners — Claude Mythos Preview Has Found 10,000+ High-Severity Security Flaws

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Anthropic is quadrupling access to its Glasswing cybersecurity initiative from 50 to 200 partner organizations globally, using Claude Mythos Preview — their most capable model, positioned above Opus, at $25/$125 per million tokens. Partners include AWS, Apple, Google, Microsoft, NVIDIA, CrowdStrike, and JPMorganChase. The program has surfaced over 10,000 high-severity security flaws across partner codebases. Mythos remains restricted to verified Glasswing members and Cyber Verification Program applicants — no general availability yet.