Anthropic restricts new Claude Mythos AI model to security researchers via Project Glasswing after it found thousands of high-severity vulnerabilities in major operating systems and browsers, including a 27-year-old OpenBSD bug—giving software industry time to patch systems before wider release.

Anthropic’s Project Glasswing—restricting Claude Mythos to security researchers—sounds necessary to me

7th April 2026 Anthropic didn’t release their latest model, Claude Mythos (system card PDF), today. They have instead made it available to a very restricted set of preview partners under their newly announced Project Glasswing. The model is a general purpose model, similar to Claude Opus 4.6, but Anthropic claim that its cyber-security research abilities are strong enough that they need to give the software industry as a whole time to prepare. Mythos Preview has already found thousands of high-s...