> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-dev-127-conversation-state-store.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# STTRequest

Speech-to-text request input. Accepts a JSON body with input\_audio containing base64-encoded audio.

## Example Usage

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

let value: STTRequest = {
  inputAudio: {
    data: "UklGRiQA...",
    format: "wav",
  },
  model: "openai/whisper-large-v3",
};
```

## Fields

| Field | Type | Required | Description | Example |
| - | - | - | - | - |
| `inputAudio` | [models.STTInputAudio](../models/sttinputaudio.mdx) | :heavy\_check\_mark: | Base64-encoded audio to transcribe | \{<br />"data": "UklGRiQA...",<br />"format": "wav"<br />} |
| `language` | *string* | :heavy\_minus\_sign: | ISO-639-1 language code (e.g., "en", "ja"). Auto-detected if omitted. | en |
| `model` | *string* | :heavy\_check\_mark: | STT model identifier | openai/whisper-large-v3 |
| `provider` | [models.STTRequestProvider](../models/sttrequestprovider.mdx) | :heavy\_minus\_sign: | Provider-specific passthrough configuration | |
| `temperature` | *number* | :heavy\_minus\_sign: | Sampling temperature for transcription | 0 |