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

# Speech-to-Text

> Transcribe audio files to text.

export const RuncrateStyles = () => {
  if (typeof document !== 'undefined' && !document.getElementById('runcrate-overrides')) {
    const s = document.createElement('style');
    s.id = 'runcrate-overrides';
    s.textContent = `
      /* Match Runcrate's rounding scale (--radius: 0.75rem) */
      .rounded-sm { border-radius: 0.5rem !important; }   /* 8px */
      .rounded-md { border-radius: 0.625rem !important; } /* 10px */
      .rounded-lg { border-radius: 0.75rem !important; }  /* 12px */
      .rounded-l-sm { border-top-left-radius: 0.5rem !important; border-bottom-left-radius: 0.5rem !important; }
      .rounded-r-sm { border-top-right-radius: 0.5rem !important; border-bottom-right-radius: 0.5rem !important; }
      .rounded-l-md { border-top-left-radius: 0.625rem !important; border-bottom-left-radius: 0.625rem !important; }
      .rounded-r-md { border-top-right-radius: 0.625rem !important; border-bottom-right-radius: 0.625rem !important; }
      .rounded-l-lg { border-top-left-radius: 0.75rem !important; border-bottom-left-radius: 0.75rem !important; }
      .rounded-r-lg { border-top-right-radius: 0.75rem !important; border-bottom-right-radius: 0.75rem !important; }

      /* Cards: never pure white in light mode */
      .card { background-color: #fcfcfc !important; border-radius: 0.75rem !important; }
      html.dark .card { background-color: #141414 !important; }

      /* Docs hero box */
      .rc-hero { background-color: #fcfcfc; border: 1px solid #e0e0e0; }
      html.dark .rc-hero { background-color: #141414; border-color: #242424; }
      html.dark .rc-hero h1 { color: #f5f5f5; }

      /* Runcrate scrollbar — thin, transparent track, hide-until-hover thumb */
      ::-webkit-scrollbar { width: 6px; height: 6px; background-color: transparent; }
      ::-webkit-scrollbar-track { background-color: transparent; }
      ::-webkit-scrollbar-thumb { background-color: rgba(155, 155, 155, 0.5); border-radius: 10px; transition: opacity 0.3s ease; opacity: 0; }
      ::-webkit-scrollbar-thumb:hover { background-color: rgba(155, 155, 155, 0.7); }
      *:hover::-webkit-scrollbar-thumb,
      *:focus::-webkit-scrollbar-thumb,
      *:active::-webkit-scrollbar-thumb { opacity: 1; }
      * { scrollbar-width: thin; scrollbar-color: rgba(155, 155, 155, 0.5) transparent; }
    `;
    document.head.appendChild(s);
  }
  return null;
};

<RuncrateStyles />

Transcribe audio files to text using ASR (Automatic Speech Recognition) models.

## Endpoint

```
POST https://api.runcrate.ai/v1/audio/transcriptions
```

## Basic Usage

<CodeGroup>
  ```bash curl theme={"theme":"github-dark"}
  curl https://api.runcrate.ai/v1/audio/transcriptions \
    -H "Authorization: Bearer rc_live_YOUR_API_KEY" \
    -F model="openai/whisper-large-v3" \
    -F file=@audio.mp3
  ```

  ```python Python theme={"theme":"github-dark"}
  from openai import OpenAI

  client = OpenAI(
      base_url="https://api.runcrate.ai/v1",
      api_key="rc_live_YOUR_API_KEY",
  )

  transcript = client.audio.transcriptions.create(
      model="openai/whisper-large-v3",
      file=open("audio.mp3", "rb"),
  )
  print(transcript.text)
  ```

  ```javascript JavaScript theme={"theme":"github-dark"}
  import OpenAI from "openai";
  import fs from "fs";

  const client = new OpenAI({
    baseURL: "https://api.runcrate.ai/v1",
    apiKey: "rc_live_YOUR_API_KEY",
  });

  const transcript = await client.audio.transcriptions.create({
    model: "openai/whisper-large-v3",
    file: fs.createReadStream("audio.mp3"),
  });
  console.log(transcript.text);
  ```
</CodeGroup>

## Parameters

| Parameter | Type   | Description                                         |
| --------- | ------ | --------------------------------------------------- |
| `model`   | string | Model ID (required)                                 |
| `file`    | file   | Audio file (required). Sent as multipart form data. |

Supported audio formats: MP3, WAV, M4A, FLAC, OGG, WebM.

## Response

```json theme={"theme":"github-dark"}
{
  "text": "Hello, welcome to Runcrate!",
  "duration": 2.5,
  "language": "en"
}
```

| Field      | Type   | Description               |
| ---------- | ------ | ------------------------- |
| `text`     | string | The transcribed text      |
| `duration` | number | Audio duration in seconds |
| `language` | string | Detected language code    |