Anthropic Launches Claude Fable 5.1

Anthropic announced the release of Claude Fable 5.1. The model is positioned for complex multi-step autonomous work in coding, data analysis, computer use, and knowledge tasks. Mike Krieger stated it continues until reaching goals and reports when stuck instead of claiming false success. Benchmark tables posted by users show gains over Fable 5 on Terminal-Bench, CursorBench, and similar tests. Cache read prices fell 75 percent on the API while base rates stayed at $10/$50.