What is Claude Mythos? And why aren't they releasing it?

Claude Mythos, a highly advanced AI model developed by Anthropic, was officially announced on April 7, 2026, but deemed too dangerous for public release due to its exceptional ability to identify and exploit software vulnerabilities across major operating systems and web browsers. This capability has raised significant cybersecurity concerns, leading Anthropic to establish Project Glasswing, a collaborative initiative with major tech companies like Amazon, Microsoft, and Google, aiming to use Mythos for defensive purposes. Despite its potential for misuse, Mythos is only being shared with select partners to explore AI's role in cybersecurity, with plans to report findings and develop best practices within 90 days. While Mythos's capabilities are impressive, they also pose risks, and Anthropic is cautious about its release, intending to eventually offer Mythos-class models with appropriate safeguards for broader use.

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