> ## 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.

# CreateDeepinfraV3Middleware

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

***

[@ai-billing/deepinfra](/docs/sdk/ai-billing/reference/deepinfra/typedoc/index) / createDeepinfraV3Middleware

# Function: createDeepinfraV3Middleware()

> **createDeepinfraV3Middleware**\<`TTags`>(`options`): `LanguageModelV3Middleware`

Defined in: [deepinfra/src/ai-sdk/language-model-middleware/v3/language-model-v3-deepinfra-billing-middleware.ts:105](https://github.com/narevai/ai-billing/blob/main/packages/deepinfra/src/ai-sdk/language-model-middleware/v3/language-model-v3-deepinfra-billing-middleware.ts#L105)

Creates a V3 billing middleware for the DeepInfra provider (`@ai-sdk/deepinfra`).
Deducts cache-read tokens from prompt tokens before billing — DeepInfra charges only non-cached input at
the prompt rate, and cached tokens separately at the cache-read rate.

DeepInfra's raw usage payload may include its own `estimated_cost` (a USD estimate). That value is never
used as the billed cost — cost is always computed from the resolved ModelPricing table — but when
present and numeric it is additionally surfaced as `usage.rawProviderCost` for informational purposes.

## Type Parameters

### TTags

`TTags` *extends* `JSONObject`

The shape of the tags object, extending DefaultTags.

## Parameters

### options

[`DeepinfraV3MiddlewareOptions`](/docs/sdk/ai-billing/reference/deepinfra/typedoc/interfaces/DeepinfraV3MiddlewareOptions)\<`TTags`>

Billing options; see [DeepinfraV3MiddlewareOptions](/docs/sdk/ai-billing/reference/deepinfra/typedoc/interfaces/DeepinfraV3MiddlewareOptions). A `priceResolver` is required.

## Returns

`LanguageModelV3Middleware`

A V3 billing middleware instance for DeepInfra.

## Example

```ts theme={null}
import { createDeepInfra } from '@ai-sdk/deepinfra';
import { wrapLanguageModel } from 'ai';
import { createDeepinfraV3Middleware } from '@ai-billing/deepinfra';
import {
  consoleDestination,
  createObjectPriceResolver,
  type ModelPricing,
} from '@ai-billing/core';

const deepInfra = createDeepInfra({ apiKey: process.env.DEEPINFRA_API_KEY });

const customPricingMap: Record<string, ModelPricing> = {
  'meta-llama/Llama-3.3-70B-Instruct': {
    promptTokens: 0.13 / 1_000_000,
    completionTokens: 0.4 / 1_000_000,
  },
};

const priceResolver = createObjectPriceResolver(customPricingMap);

const billingMiddleware = createDeepinfraV3Middleware({
  destinations: [consoleDestination()],
  priceResolver,
});

const wrappedModel = wrapLanguageModel({
  model: deepInfra('meta-llama/Llama-3.3-70B-Instruct'),
  middleware: billingMiddleware,
});
```