fix(provider/anthropic): minor follow up to support no-op speed standard#12582
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felixarntz merged 3 commits intomainfrom Feb 14, 2026
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fix(provider/anthropic): minor follow up to support no-op speed standard#12582felixarntz merged 3 commits intomainfrom
felixarntz merged 3 commits intomainfrom
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shaper
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Feb 13, 2026
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| ### Fast Mode | ||
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| Anthropic supports a `speed` option for `claude-opus-4-6` that enables faster inference with approximately 2.5x faster output token speeds. |
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could be worth adding a link to https://code.claude.com/docs/en/fast-mode for more info
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felixarntz
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Feb 16, 2026
…peed standard (#12587) This is an automated backport of #12582 to the release-v5.0 branch. FYI @felixarntz This backport has conflicts that need to be resolved manually. ### `git cherry-pick` output ``` Auto-merging content/providers/01-ai-sdk-providers/05-anthropic.mdx CONFLICT (content): Merge conflict in content/providers/01-ai-sdk-providers/05-anthropic.mdx Auto-merging packages/anthropic/src/anthropic-messages-api.ts Auto-merging packages/anthropic/src/anthropic-messages-language-model.test.ts Auto-merging packages/anthropic/src/anthropic-messages-language-model.ts Auto-merging packages/anthropic/src/anthropic-messages-options.ts error: could not apply 23ac4a3... fix(provider/anthropic): minor follow up to support no-op speed standard (#12582) hint: After resolving the conflicts, mark them with hint: "git add/rm <pathspec>", then run hint: "git cherry-pick --continue". hint: You can instead skip this commit with "git cherry-pick --skip". hint: To abort and get back to the state before "git cherry-pick", hint: run "git cherry-pick --abort". hint: Disable this message with "git config set advice.mergeConflict false" ``` --------- Co-authored-by: Felix Arntz <felix.arntz@vercel.com>
gr2m
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Feb 16, 2026
…ard (#12582) ## Background Follow-up to #12353 which added `speed: 'fast'` support for Claude. A few things were missed: `'standard'` is also a valid value per the Anthropic spec, the `speed` field was missing from the API type definitions, and there was no documentation for the feature. These are low-severity issues, but potentially could lead to problems for those that rely on `providerOptions` schema and may incorrectly reject the `'standard'` value. ## Summary - Accept `'standard'` in addition to `'fast'` for the `speed` provider option (it's a no-op but required by the spec) - Add `AnthropicSpeed` type to the API definitions - Add a "Fast Mode" section to the Anthropic provider docs - Add test for `speed: 'standard'` verifying no beta header is sent ## Checklist - [x] Tests have been added / updated (for bug fixes / features) - [x] 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 N/A
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Background
Follow-up to #12353 which added
speed: 'fast'support for Claude. A few things were missed:'standard'is also a valid value per the Anthropic spec, thespeedfield was missing from the API type definitions, and there was no documentation for the feature.These are low-severity issues, but potentially could lead to problems for those that rely on
providerOptionsschema and may incorrectly reject the'standard'value.Summary
'standard'in addition to'fast'for thespeedprovider option (it's a no-op but required by the spec)AnthropicSpeedtype to the API definitionsspeed: 'standard'verifying no beta header is sentChecklist
pnpm changesetin the project root)Related Issues
N/A