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AnthropicClaude API
We've launched structured outputs in public beta, providing guaranteed schema conformance for Claude's…
AI summary
Written by AI from the official notes. Check them for exact details.Anthropic has introduced structured outputs in public beta for Claude's responses, ensuring schema conformance.
- Structured outputs guarantee schema conformance for responses.
- JSON outputs can be used for structured data.
- Strict tool use is available for validated tool inputs.
- Feature is available for Claude Sonnet 4.5 and Claude Opus 4.1.
Why it matters: Developers and data analysts should care for improved data handling and integration capabilities.
Full release notes
- We've launched structured outputs in public beta, providing guaranteed schema conformance for Claude's responses. Use JSON outputs for structured data responses or strict tool use for validated tool inputs. Available for Claude Sonnet 4.5 and Claude Opus 4.1. To enable, use the beta header
structured-outputs-2025-11-13.