> ## 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.

# CreateAlibabaV4Middleware

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

***

[@ai-billing/alibaba](/docs/sdk/ai-billing/reference/alibaba/typedoc/index) / createAlibabaV4Middleware

# Function: createAlibabaV4Middleware()

> **createAlibabaV4Middleware**\<`TTags`>(`options`): `LanguageModelV4Middleware`

Defined in: [alibaba/src/ai-sdk/language-model-middleware/v4/language-model-v4-alibaba-billing-middleware.ts:98](https://github.com/narevai/ai-billing/blob/main/packages/alibaba/src/ai-sdk/language-model-middleware/v4/language-model-v4-alibaba-billing-middleware.ts#L98)

Creates a V4 billing middleware for the Alibaba provider (`@ai-sdk/alibaba`).
Deducts cache-read tokens from prompt tokens before billing — Alibaba charges only non-cached input at
the prompt rate, and cached tokens separately at the cache-read rate.

## Type Parameters

### TTags

`TTags` *extends* `JSONObject`

The shape of the tags object, extending DefaultTags.

## Parameters

### options

[`AlibabaV4MiddlewareOptions`](/docs/sdk/ai-billing/reference/alibaba/typedoc/interfaces/AlibabaV4MiddlewareOptions)\<`TTags`>

Billing options; see [AlibabaV4MiddlewareOptions](/docs/sdk/ai-billing/reference/alibaba/typedoc/interfaces/AlibabaV4MiddlewareOptions). A `priceResolver` is required.

## Returns

`LanguageModelV4Middleware`

A V4 billing middleware instance for Alibaba.

## Example

```ts theme={null}
import { createAlibaba } from '@ai-sdk/alibaba';
import { wrapLanguageModel } from 'ai';
import { createAlibabaV4Middleware } from '@ai-billing/alibaba';
import {
  consoleDestination,
  createObjectPriceResolver,
  type ModelPricing,
} from '@ai-billing/core';

const alibaba = createAlibaba({ apiKey: process.env.ALIBABA_API_KEY });

const customPricingMap: Record<string, ModelPricing> = {
  'qwen-plus': {
    promptTokens: 0.8 / 1_000_000,
    completionTokens: 2.0 / 1_000_000,
  },
  'qwen-turbo': {
    promptTokens: 0.3 / 1_000_000,
    completionTokens: 0.6 / 1_000_000,
  },
};

const priceResolver = createObjectPriceResolver(customPricingMap);

const billingMiddleware = createAlibabaV4Middleware({
  destinations: [consoleDestination()],
  priceResolver,
});

const wrappedModel = wrapLanguageModel({
  model: alibaba('qwen-plus'),
  middleware: billingMiddleware,
});
```