Backport: fix(@ai-sdk/togetherai): omit seed from request body when undefined#15412
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…15037) ## Background Together AI returns `"Unsupported use of 'seed' parameter"` when `seed` is sent to models that don't support it (e.g. non-diffusion models like `google/gemini-3-pro-image`). The `seed` was previously always included in the request body even when `undefined`. ## Summary Changed the request body construction to only include `seed` when it is explicitly provided: ```ts // Before seed, // After ...(seed != null ? { seed } : {}), ``` ## Manual Verification Tested by calling `doGenerate` without a `seed` parameter against a TogetherAI model — the field is no longer present in the serialized request body. Automated test added to assert the same. ## Checklist - [x] All commits are signed (PRs with unsigned commits cannot be merged) - [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) Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
aayush-kapoor
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May 18, 2026
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This is an automated backport of #15037 to the release-v6.0 branch. FYI @Mmartinrusso