Claude Think Tool: How Chain-of-Thought Reasoning Works in Claude
The Claude think tool is a dedicated reasoning mechanism built into Anthropic’s API that gives Claude a structured space to perform chain-of-thought reasoning during complex multi-step tool use. Unlike standard prompting where the model must produce an answer immediately, the think tool lets Claude pause, analyze, plan, and reason before taking action — resulting in measurably better performance on agentic tasks, with τ-Bench scores improving by up to 54% in airline customer service domains. ...