> ## Documentation Index
> Fetch the complete documentation index at: https://narev.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenRouterV3MiddlewareOptions

[**@ai-billing/openrouter**](../index)

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[@ai-billing/openrouter](/docs/sdk/ai-billing/reference/openrouter/typedoc/index) / OpenRouterV3MiddlewareOptions

# Type Alias: OpenRouterV3MiddlewareOptions\<TTags>

> **OpenRouterV3MiddlewareOptions**\<`TTags`> = `BaseBillingMiddlewareOptions`\<`TTags`>

Defined in: [language-model-middleware/v3/language-model-v3-openrouter-billing-middleware.ts:36](https://github.com/narevai/ai-billing/blob/main/packages/openrouter/src/ai-sdk/language-model-middleware/v3/language-model-v3-openrouter-billing-middleware.ts#L36)

Configuration for [createOpenRouterV3Middleware](/docs/sdk/ai-billing/reference/openrouter/typedoc/functions/createOpenRouterV3Middleware).

Matches BaseBillingMiddlewareOptions (`destinations`, `defaultTags`, `waitUntil`, `onError`). There
is no `priceResolver`: billed amount and token breakdown come from OpenRouter metadata (`usage.cost`, etc.).

## Type Parameters

### TTags

`TTags` *extends* `DefaultTags`

The shape of the tags object, extending DefaultTags.