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

Represents identifiers for default prompt routers in Bedrock.

These are pre-configured routers provided by AWS that route between
different models in the same family for optimal performance and cost.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`bedrock/inference-profiles/prompt-router.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-bedrock-alpha/bedrock/inference-profiles/prompt-router.ts#L54)

## Example

```ts
// Create a prompt router for intelligent model selection
const promptRouter = bedrock.PromptRouter.fromDefaultId(
  bedrock.DefaultPromptRouterIdentifier.ANTHROPIC_CLAUDE_V1,
  'us-east-1'
);

// Use the prompt router with a prompt variant
const variant = bedrock.PromptVariant.text({
  variantName: 'variant1',
  promptText: 'What is the capital of France?',
  model: promptRouter,
});

new bedrock.Prompt(this, 'Prompt', {
  promptName: 'prompt-router-test',
  variants: [variant],
});
```

## Properties

- `ANTHROPIC_CLAUDE_V1`: [DefaultPromptRouterIdentifier](/cdk/api/v2/docs/@aws-cdk_aws-bedrock-alpha.DefaultPromptRouterIdentifier.html) (static) — Anthropic Claude V1 router configuration.

  Routes between Claude Haiku and Claude 3.5 Sonnet models for optimal
  balance between performance and cost.

- `META_LLAMA_3_1`: [DefaultPromptRouterIdentifier](/cdk/api/v2/docs/@aws-cdk_aws-bedrock-alpha.DefaultPromptRouterIdentifier.html) (static) — Meta Llama 3.1 router configuration. Routes between different sizes of Llama 3.1 models (8B and 70B) for optimal performance based on request complexity.

- `promptRouterId`: string — The unique identifier for this prompt router.

- `routingModels`: [BedrockFoundationModel](/cdk/api/v2/docs/@aws-cdk_aws-bedrock-alpha.BedrockFoundationModel.html)[] — The foundation models that this router can route between.