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

# STT

> Speech-to-text endpoints

## Overview

Speech-to-text endpoints

### Available Operations

* [createTranscription](#createtranscription) - Create transcription
* [createTranscriptionMultipart](#createtranscriptionmultipart) - Create transcription

## createTranscription

Transcribes audio into text. Accepts base64-encoded audio input as JSON or an OpenAI-style multipart/form-data file upload, and returns the transcribed text.

### Example Usage

```typescript theme={null}
import { OpenRouter } from "@openrouter/sdk";

const openRouter = new OpenRouter({
  httpReferer: "<value>",
  appTitle: "<value>",
  appCategories: "<value>",
  apiKey: process.env["OPENROUTER_API_KEY"] ?? "",
});

async function run() {
  const result = await openRouter.stt.createTranscription({
    sttRequest: {
      inputAudio: {
        data: "UklGRiQA...",
        format: "wav",
      },
      language: "en",
      model: "openai/whisper-large-v3",
    },
  });

  console.log(result);
}

run();
```

### Standalone function

The standalone function version of this method:

```typescript theme={null}
import { OpenRouterCore } from "@openrouter/sdk/core.js";
import { sttCreateTranscription } from "@openrouter/sdk/funcs/sttCreateTranscription.js";

// Use `OpenRouterCore` for best tree-shaking performance.
// You can create one instance of it to use across an application.
const openRouter = new OpenRouterCore({
  httpReferer: "<value>",
  appTitle: "<value>",
  appCategories: "<value>",
  apiKey: process.env["OPENROUTER_API_KEY"] ?? "",
});

async function run() {
  const res = await sttCreateTranscription(openRouter, {
    sttRequest: {
      inputAudio: {
        data: "UklGRiQA...",
        format: "wav",
      },
      language: "en",
      model: "openai/whisper-large-v3",
    },
  });
  if (res.ok) {
    const { value: result } = res;
    console.log(result);
  } else {
    console.log("sttCreateTranscription failed:", res.error);
  }
}

run();
```

### Parameters

| Parameter              | Type                                                                                                        | Required             | Description                                                                                                                                                                    |
| ---------------------- | ----------------------------------------------------------------------------------------------------------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `request`              | [operations.CreateAudioTranscriptionsRequest](../../models/operations/createaudiotranscriptionsrequest.mdx) | :heavy\_check\_mark: | The request object to use for the request.                                                                                                                                     |
| `options`              | RequestOptions                                                                                              | :heavy\_minus\_sign: | Used to set various options for making HTTP requests.                                                                                                                          |
| `options.fetchOptions` | [RequestInit](https://developer.mozilla.org/en-US/docs/Web/API/Request/Request#options)                     | :heavy\_minus\_sign: | Options that are passed to the underlying HTTP request. This can be used to inject extra headers for examples. All `Request` options, except `method` and `body`, are allowed. |
| `options.retries`      | [RetryConfig](../../lib/utils/retryconfig.mdx)                                                              | :heavy\_minus\_sign: | Enables retrying HTTP requests under certain failure conditions.                                                                                                               |

### Response

**Promise\<[models.STTResponse](../../models/sttresponse.mdx)>**

### Errors

| Error Type                             | Status Code | Content Type     |
| -------------------------------------- | ----------- | ---------------- |
| errors.BadRequestResponseError         | 400         | application/json |
| errors.UnauthorizedResponseError       | 401         | application/json |
| errors.PaymentRequiredResponseError    | 402         | application/json |
| errors.ForbiddenResponseError          | 403         | application/json |
| errors.NotFoundResponseError           | 404         | application/json |
| errors.PayloadTooLargeResponseError    | 413         | application/json |
| errors.TooManyRequestsResponseError    | 429         | application/json |
| errors.InternalServerResponseError     | 500         | application/json |
| errors.BadGatewayResponseError         | 502         | application/json |
| errors.ServiceUnavailableResponseError | 503         | application/json |
| errors.EdgeNetworkTimeoutResponseError | 524         | application/json |
| errors.ProviderOverloadedResponseError | 529         | application/json |
| errors.OpenRouterDefaultError          | 4XX, 5XX    | \*/\*            |

## createTranscriptionMultipart

Transcribes audio into text. Accepts base64-encoded audio input as JSON or an OpenAI-style multipart/form-data file upload, and returns the transcribed text.

### Example Usage

```typescript theme={null}
import { OpenRouter } from "@openrouter/sdk";
import { openAsBlob } from "node:fs";

const openRouter = new OpenRouter({
  httpReferer: "<value>",
  appTitle: "<value>",
  appCategories: "<value>",
  apiKey: process.env["OPENROUTER_API_KEY"] ?? "",
});

async function run() {
  const result = await openRouter.stt.createTranscriptionMultipart({
    requestBody: {
      file: await openAsBlob("example.file"),
      language: "en",
      model: "openai/whisper-large-v3",
    },
  });

  console.log(result);
}

run();
```

### Standalone function

The standalone function version of this method:

```typescript theme={null}
import { OpenRouterCore } from "@openrouter/sdk/core.js";
import { sttCreateTranscriptionMultipart } from "@openrouter/sdk/funcs/sttCreateTranscriptionMultipart.js";
import { openAsBlob } from "node:fs";

// Use `OpenRouterCore` for best tree-shaking performance.
// You can create one instance of it to use across an application.
const openRouter = new OpenRouterCore({
  httpReferer: "<value>",
  appTitle: "<value>",
  appCategories: "<value>",
  apiKey: process.env["OPENROUTER_API_KEY"] ?? "",
});

async function run() {
  const res = await sttCreateTranscriptionMultipart(openRouter, {
    requestBody: {
      file: await openAsBlob("example.file"),
      language: "en",
      model: "openai/whisper-large-v3",
    },
  });
  if (res.ok) {
    const { value: result } = res;
    console.log(result);
  } else {
    console.log("sttCreateTranscriptionMultipart failed:", res.error);
  }
}

run();
```

### Parameters

| Parameter              | Type                                                                                                                          | Required             | Description                                                                                                                                                                    |
| ---------------------- | ----------------------------------------------------------------------------------------------------------------------------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `request`              | [operations.CreateAudioTranscriptionsMultipartRequest](../../models/operations/createaudiotranscriptionsmultipartrequest.mdx) | :heavy\_check\_mark: | The request object to use for the request.                                                                                                                                     |
| `options`              | RequestOptions                                                                                                                | :heavy\_minus\_sign: | Used to set various options for making HTTP requests.                                                                                                                          |
| `options.fetchOptions` | [RequestInit](https://developer.mozilla.org/en-US/docs/Web/API/Request/Request#options)                                       | :heavy\_minus\_sign: | Options that are passed to the underlying HTTP request. This can be used to inject extra headers for examples. All `Request` options, except `method` and `body`, are allowed. |
| `options.retries`      | [RetryConfig](../../lib/utils/retryconfig.mdx)                                                                                | :heavy\_minus\_sign: | Enables retrying HTTP requests under certain failure conditions.                                                                                                               |

### Response

**Promise\<[models.STTResponse](../../models/sttresponse.mdx)>**

### Errors

| Error Type                             | Status Code | Content Type     |
| -------------------------------------- | ----------- | ---------------- |
| errors.BadRequestResponseError         | 400         | application/json |
| errors.UnauthorizedResponseError       | 401         | application/json |
| errors.PaymentRequiredResponseError    | 402         | application/json |
| errors.ForbiddenResponseError          | 403         | application/json |
| errors.NotFoundResponseError           | 404         | application/json |
| errors.PayloadTooLargeResponseError    | 413         | application/json |
| errors.TooManyRequestsResponseError    | 429         | application/json |
| errors.InternalServerResponseError     | 500         | application/json |
| errors.BadGatewayResponseError         | 502         | application/json |
| errors.ServiceUnavailableResponseError | 503         | application/json |
| errors.EdgeNetworkTimeoutResponseError | 524         | application/json |
| errors.ProviderOverloadedResponseError | 529         | application/json |
| errors.OpenRouterDefaultError          | 4XX, 5XX    | \*/\*            |