claude-fable-5.2

Claude Fable 5.2 is built for demanding reasoning and long-horizon agentic work. It features built-in persistent deep thinking, supports multimodal fusion with text and image inputs, with strong vision recognition and chart parsing capabilities as well as advanced complex coding. It has a 1M-token context window, excelling at long-document analysis, multi-step research, large codebase iteration, hardware & robotics control, and 3D scene design. It delivers improved reasoning accuracy, up to 30%