Amazon Bedrock adds structured outputs for Anthropic Claude models
Amazon Bedrock now supports structured outputs for all Anthropic Claude models on the bedrock-runtime and bedrock-mantle endpoints. The feature uses constrained decoding to enforce a JSON schema during token generation, which the post says makes output formatting deterministic and removes the need for custom parsing or retry logic. It covers JSON Schema output format and strict tool use, works with batch inference, cross-Region inference and streaming, and caches compiled grammars for 24 hours.
Why it matters: This gives teams building on Bedrock a concrete way to get schema-compliant JSON from Claude without custom validation code, which matters for data extraction and agent tool calls.