--- title: "@ai-sdk/cohere Breaking Changes on npm | Since.dev" description: "What each @ai-sdk/cohere release removed, renamed or changed: 18 breaking changes in 2 versions on npm, each with its source." canonical_url: https://since.dev/packages/npm/@ai-sdk/cohere last_updated: 2026-06-25 --- # @ai-sdk/cohere breaking changes Every breaking API change we have recorded in @ai-sdk/cohere on npm: 18 breaking changes in 2 versions. Below are its newest 2 versions, removals and renames first, each with its source. Newest change June 25, 2026 ## 4.0.0 12 breaking changes, first published June 25, 2026. - **Signature changed** `CohereChatModelOptions` Was type CohereLanguageModelOptions = InferSchema; now type CohereLanguageModelChatOptions = z.infer. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereEmbeddingModelOptions` Was type CohereEmbeddingModelOptions = InferSchema; now type CohereEmbeddingModelOptions = z.infer. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereLanguageModelOptions` Was type CohereLanguageModelOptions = InferSchema; now type CohereLanguageModelChatOptions = z.infer. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereProvider` Was interface CohereProvider extends ProviderV3; now interface CohereProvider extends ProviderV4. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereProvider.__call` Was (modelId: CohereChatModelId): LanguageModelV3; now (modelId: CohereChatModelId): LanguageModelV4. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereProvider.embedding` Was embedding(modelId: CohereEmbeddingModelId): EmbeddingModelV3; now embedding(modelId: CohereEmbeddingModelId): EmbeddingModelV4. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereProvider.embeddingModel` Was embeddingModel(modelId: CohereEmbeddingModelId): EmbeddingModelV3; now embeddingModel(modelId: CohereEmbeddingModelId): EmbeddingModelV4. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereProvider.languageModel` Was languageModel(modelId: CohereChatModelId): LanguageModelV3; now languageModel(modelId: CohereChatModelId): LanguageModelV4. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereProvider.reranking` Was reranking(modelId: CohereRerankingModelId): RerankingModelV3; now reranking(modelId: CohereRerankingModelId): RerankingModelV4. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) - **Signature changed** `CohereProvider.rerankingModel` Was rerankingModel(modelId: CohereRerankingModelId): RerankingModelV3; now rerankingModel(modelId: CohereRerankingModelId): RerankingModelV4. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/4.0.0) And 2 more in this version. ## 3.0.0 6 breaking changes, first published December 22, 2025. - **Signature changed** `CohereChatModelOptions` Was type CohereChatModelOptions = InferSchema; now type CohereChatModelOptions = z.infer. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/3.0.0) - **Signature changed** `CohereProvider` Was interface CohereProvider extends ProviderV2; now interface CohereProvider extends ProviderV3. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/3.0.0) - **Signature changed** `CohereProvider.__call` Was (modelId: CohereChatModelId): LanguageModelV2; now (modelId: CohereChatModelId): LanguageModelV3. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/3.0.0) - **Signature changed** `CohereProvider.embedding` Was embedding(modelId: CohereEmbeddingModelId): EmbeddingModelV2; now embedding(modelId: CohereEmbeddingModelId): EmbeddingModelV3. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/3.0.0) - **Signature changed** `CohereProvider.languageModel` Was languageModel(modelId: CohereChatModelId): LanguageModelV2; now languageModel(modelId: CohereChatModelId): LanguageModelV3. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/3.0.0) - **Signature changed** `CohereProvider.textEmbeddingModel` Was textEmbeddingModel(modelId: CohereEmbeddingModelId): EmbeddingModelV2; now textEmbeddingModel(modelId: CohereEmbeddingModelId): EmbeddingModelV3. [npmjs.com](https://www.npmjs.com/package/@ai-sdk/cohere/v/3.0.0) ## Check your code These are the changes. 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