# Amazon Bedrock adds JSON‑schema outputs for Claude models

> All Anthropic Claude models on Bedrock can now return schema‑validated JSON, cutting parsing errors and retry logic.

Oossa · 2026-10-19 · https://oossa.com/en/amazon-bedrock-adds-json-schema-outputs-for-claude-models

Amazon Bedrock announced that every Anthropic Claude model now supports structured outputs. When you call Claude via the bedrock‑runtime or bedrock‑mantle APIs, the model returns JSON that matches a schema you provide. This removes the need for custom parsing, retries, or post‑processing. The feature works with batch and streaming requests and can be used across AWS regions.

## The facts

- Announcement date: Oct 20, 2026
- Supported models include Claude‑sonnet‑5‑5 and Claude‑haiku‑5‑5

## Why it matters

Developers can integrate Claude into production pipelines without writing extra code to handle malformed JSON.

## Sources & references

1. [Structured outputs for Anthropic Claude models on Amazon Bedrock](https://aws.amazon.com/blogs/machine-learning/structured-outputs-for-anthropic-claude-models-on-amazon-bedrock/) – AWS, 2026-10-19
2. [Structured outputs for Claude models available on Amazon Bedrock](https://aws.amazon.com/about-aws/whats-new/2026/10/claude-structured-outputs-bedrock/) – AWS, 2026-10-20

Last updated: 2026-10-20