Project Glasswing and Claude Mythos, Part 2: Fable 5 and Mythos 5
Two months after the Glasswing launch, Anthropic released Claude Fable 5 for general use and upgraded the Glasswing model to Mythos 5. Here is what changed and what it means.
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Project Glasswing and Claude Mythos, Part 1: the initiative and what it found
Anthropic and 11 major tech companies launched a collaborative AI security initiative on April 7, 2026. Here is what it is, what Claude Mythos Preview can do, and what it means for the code you ship.