[Platform] Support structured output for Bedrock ClaudeModelClient #1556
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This adds support for structured outputs on AWS Bedrock for Claude 4.5 models: - Claude Sonnet 4.5 (claude-sonnet-4-5-20250929) - Claude Opus 4.5 (claude-opus-4-5-20251101) - Claude Haiku 4.5 (claude-haiku-4-5-20251001) - newly added to catalog Changes: - Update ClaudeModelClient to transform response_format to output_config - Add OUTPUT_STRUCTURED capability to Claude 4.5 models in ModelCatalog - Add test coverage for structured output transformation - Update CHANGELOG.md The implementation differs from the native Anthropic API: - Uses output_config.format instead of output_format - Does not add beta header (structured outputs are GA on Bedrock)
This adds the OUTPUT_STRUCTURED capability to the Claude Haiku 4.5 model (claude-haiku-4-5-20251001) in the Anthropic bridge, completing the support for all Claude 4.5 models that have structured output capability. Changes: - Add OUTPUT_STRUCTURED capability to claude-haiku-4-5-20251001 - Update test coverage - Update CHANGELOG.md
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Status: Needs Review
Feature
Updates the Anthropic bridge to use the GA (General Availability) API format for structured outputs, as announced on January 29, 2026. Changes: - Replace output_format with output_config.format - Remove automatic addition of structured-outputs-2025-11-13 beta header - Add test for new API format - Update CHANGELOG.md Reference: https://platform.claude.com/docs/en/release-notes/overview#january-29-2026
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This PR adds structured output support for AWS Bedrock Claude 4.5 models and adds the
claude-haiku-4-5-20251001model to Bedrock catalog plus structured output for it in Anthropic catalog.Verification: