fix(@ai-sdk/openai): omit reasoning item id when store is false#14983
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fix(@ai-sdk/openai): omit reasoning item id when store is false#14983Mmartinrusso wants to merge 3 commits into
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Azure OpenAI rejects reasoning items that include an id field in stateless mode (store: false). The id is only meaningful when the server persists items (store: true), where it is used to build item_reference pointers in subsequent turns. Strip id from the reasoning message object in the store: false branch and update the corresponding test expectations. Fixes vercel#12687
…hots Three toMatchInlineSnapshot assertions in the merging-and-sequencing test block still included id fields that the fix intentionally omits. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Background
When `store: false`, the SDK includes `id` in reasoning items sent to the API. Azure OpenAI rejects these requests with an error because the `id` field is only meaningful in store mode — in stateless mode it is an invalid field.
Fixes #12687.
Summary
Remove `id` from the reasoning object in the `store: false` branch of `convert-to-openai-responses-input.ts`. The field is already typed as optional (`id?: string`), so omitting it is type-safe and has no effect on direct OpenAI.
Manual Verification
Inspected serialized request body in the test suite: `id` is absent from reasoning items in the `store: false` path and present as expected in the `store: true` path.
Checklist
Related Issues
Fixes #12687