Backport: feat(bedrock): support native structured output for anthropic models without reasoning#14188
Closed
vercel-ai-sdk[bot] wants to merge 1 commit intorelease-v6.0from
Closed
Backport: feat(bedrock): support native structured output for anthropic models without reasoning#14188vercel-ai-sdk[bot] wants to merge 1 commit intorelease-v6.0from
vercel-ai-sdk[bot] wants to merge 1 commit intorelease-v6.0from
Conversation
…without reasoning (#14126) ## Background #12980 The bedrock converse API path (bedrock('anthropic.claude-...')) only used native structured output when thinking/reasoning was enabled. Without thinking, it always fell back to a JSON tool workaround, even for models like Claude 4.5/4.6 that natively support structured output on bedrock. ## Summary changed the condition to use model capability OR thinking enabled 9since we already have a function `getModelCapabilities()` to check if the model natively supports structured output ## Manual Verification na ## Checklist - [x] Tests have been added / updated (for bug fixes / features) - [ ] Documentation has been added / updated (for bug fixes / features) - [x] A _patch_ changeset for relevant packages has been added (for bug fixes / features - run `pnpm changeset` in the project root) - [x] I have reviewed this pull request (self-review) ## Related Issues fixes #12980
Merged
4 tasks
tigent
bot
added
ai/provider
aayush-kapoor
approved these changes
Apr 7, 2026
auto-merge was automatically disabled
April 7, 2026 14:58
Pull request was closed
![vercel[bot]](https://avatars.githubusercontent.com/in/8329?s=60&v=4){kind=small}
| bedrockOptions.reasoningConfig?.type === 'adaptive'; | ||
|
|
||
| const { supportsStructuredOutput: modelSupportsStructuredOutput } = | ||
| getModelCapabilities(this.modelId); |
Contributor
There was a problem hiding this comment.
getModelCapabilities is called but never defined or imported in bedrock-chat-language-model.ts, causing a ReferenceError at runtime when any Bedrock model is used with structured output or thinking features.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This is an automated backport of #14126 to the release-v6.0 branch. FYI @aayush-kapoor