> **Experimental**
>
> `@aws-cdk/aws-bedrock-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# KnowledgeBaseEmbeddingsModel

Configures the embeddings model of a vector knowledge base.

Sets `EmbeddingModelArn`, `Dimensions` (only for models with a configurable
dimension; CloudFormation rejects it otherwise) and `EmbeddingDataType`.
Grants the role referenced by the knowledge base's `roleArn` `bedrock:InvokeModel*`
and `bedrock:GetFoundationModel` on the model and makes the knowledge base depend
on that policy.

Extends: Mixin › KnowledgeBaseEmbeddingsModel
Implements: IMixin

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`bedrock/mixins/knowledge-base.ts`](https://github.com/aws/aws-cdk/blob/v2.274.0-alpha.0/packages/@aws-cdk/aws-bedrock-alpha/bedrock/mixins/knowledge-base.ts#L142)
- Type last changed: v2.274.0-alpha.0 · 21 Oct 2026

## Example

```ts
declare const role: iam.Role;

new aws_bedrock_cfn.CfnKnowledgeBase(this, 'KnowledgeBase', {
  name: 'product-documentation',
  roleArn: role.roleArn,
  knowledgeBaseConfiguration: { type: 'VECTOR' },
}).with(new bedrock.mixins.KnowledgeBaseEmbeddingsModel({
  embeddingsModel: bedrock.BedrockFoundationModel.TITAN_EMBED_TEXT_V2_1024,
}));
```

## Initializer

```ts
new KnowledgeBaseEmbeddingsModel(props: KnowledgeBaseEmbeddingsModelProps)
```

## Methods

- `applyTo(construct: IConstruct): void` — Applies the mixin functionality to the target construct.

- `isMixin(x: any): boolean` (static) — Checks if `x` is a Mixin.

  **Parameters**

  - `x` — Any object.

  **Returns:** true if `x` is an object created from a class which extends `Mixin`.

- `supports(construct: IConstruct): boolean` — Determines whether this mixin can be applied to the given construct.