Structured Outputs Anthropic Claude: AI Response Formatting Guide

Claude Developer Platform Structured Output: A Practical Guide to More Reliable AI Responses In AI application development, have you ever encountered such problems: the model’s returned results are disorganized, leading to parsing failures in downstream systems? Or tool calls fail due to format mismatches, forcing the entire process to abort? If you’ve had similar experiences, the newly launched structured output feature on the Claude Developer Platform might be the solution you need. On November 14, 2025, Anthropic officially announced that the Claude Sonnet 4.5 and Opus 4.1 models on its developer platform now support structured output, which is currently in …