fix(anthropic): allow both temperature and topP for non-Anthropic models#14052
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gr2m merged 3 commits intorelease-v6.0from Apr 2, 2026
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The temperature/topP mutual exclusivity check was applied to all models using the @ai-sdk/anthropic provider, but providers like Minimax that use the Anthropic-compatible API may require both parameters. - Rename `isKnownModel` to `isKnownAnthropicModel` for clarity - Fall back to `true` for unknown models starting with `claude-` - Only enforce temperature/topP mutual exclusivity for known Anthropic models Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
…heck Instead of baking the `claude-` prefix fallback into `getModelCapabilities`, introduce a derived `isAnthropicModel` variable that combines `isKnownAnthropicModel` with the `claude-` prefix check. Use this for the temperature/topP mutual exclusivity guard. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
lgrammel
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Apr 2, 2026
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
lgrammel
approved these changes
Apr 2, 2026
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…els (#14056) ## Background The `@ai-sdk/anthropic` provider enforces temperature/topP mutual exclusivity for all models, matching a constraint in the Anthropic API. However, providers like Minimax use the Anthropic-compatible API endpoint with non-Anthropic models (e.g. `MiniMax-M2.7`) that require both `temperature` and `top_p` to be set simultaneously. ## Summary - Introduce `isAnthropicModel` variable derived from `isKnownModel || modelId.startsWith('claude-')` - Only enforce temperature/topP mutual exclusivity for Anthropic models - Non-Anthropic models using the Anthropic-compatible API can now send both parameters ## Related Issues Port of #14052
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Background
The
@ai-sdk/anthropicprovider enforces temperature/topP mutual exclusivity for all models (#11458), matching a constraint in the Anthropic API. However, providers like Minimax use the Anthropic-compatible API endpoint with non-Anthropic models (e.g.MiniMax-M2.7) that require bothtemperatureandtop_pto be set simultaneously. The SDK currently dropstopPwhenever both are provided, with no way to override this behavior.Summary
isKnownModeltoisKnownAnthropicModelfor claritygetModelCapabilitiesto returntruefor unknown models whose ID starts withclaude-(forward-compatible with future Anthropic models)isKnownAnthropicModelas a guard for the temperature/topP mutual exclusivity check — non-Anthropic models using the Anthropic-compatible API can now send both parametersManual Verification
Created a test using a non-Anthropic model ID (
MiniMax-M2.7) that verifies bothtemperatureandtop_pare sent in the request body without warnings.Checklist
pnpm changesetin the project root)