Claude Sonnet 5 Max Passes ChessBench
R2Cdev_ · x · 2026-07-09
ChessBench indicates that Claude Sonnet 5 Max is Anthropic's first model that did not attempt illegal moves. The post is essentially sharing a model evaluation result.
Related event: Claude Sonnet 5 Max Passes ChessBench Without Illegal Moves(2 posts)→