kapynAI / Models

Claude Fable is relentlessly proactive

Claude Fable 5 is a new AI model described as "relentlessly proactive". It demonstrates advanced capability in identifying and fixing bugs by automatically inspecting dependencies and codebases. This proactive approach allows it to quickly deploy various techniques to achieve its goals, making it a powerful tool for developers debugging complex projects.

Simon Willison·Jun 11, 2026

Opening Kapyn…