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

> ## Agent Instructions
> Public hosts only: console https://omnimux.ai/dashboard · API https://api.omnimux.ai · docs https://docs.omnimux.ai.
> Gateway auth is Authorization: Bearer sk-… on https://api.omnimux.ai/v1 (OpenAI-compatible Chat Completions and related paths).
> Discover pages from /llms.txt; full site dump /llms-full.txt; product skill /skill.md; docs search MCP /mcp. Prefer .md page URLs for Markdown.
> Default docs locale is en; zh mirrors the same relative paths. Do not invent model ids not present on live pricing or the complete API pages.

# Doubao Speech Recognition

> VolcEngine / Doubao speech recognition · model `doubao-asr-bigmodel`, `seedasr-auc`, `bigasr-auc`

* Endpoint: `POST /v1/audio/transcriptions`
* Protocol: OpenAI-compatible Audio Transcriptions endpoint
* Supports recorded audio file speech-to-text transcription

## Identity

| Field  | Value                                              |
| ------ | -------------------------------------------------- |
| Series | Audio series                                       |
| Brand  | VolcEngine / Doubao                                |
| model  | `doubao-asr-bigmodel`, `seedasr-auc`, `bigasr-auc` |

## Endpoint

| Method | Path                       |
| ------ | -------------------------- |
| `POST` | `/v1/audio/transcriptions` |

Base URL: `https://api.omnimux.ai`

## Authorizations

| Name            | In     | Type   | Required | Description               |
| --------------- | ------ | ------ | -------- | ------------------------- |
| `Authorization` | header | string | yes      | `Bearer sk-...` (API key) |

## Body (multipart/form-data)

| Field             | Type   | Required | Description                                                             |
| ----------------- | ------ | -------- | ----------------------------------------------------------------------- |
| `file`            | file   | yes      | The audio file object to transcribe (supports wav, mp3, ogg, m4a, etc.) |
| `model`           | string | yes      | One of `doubao-asr-bigmodel`, `seedasr-auc`, `bigasr-auc`               |
| `language`        | string | no       | The language of the input audio in ISO-639-1 format (e.g. `en`, `zh`)   |
| `response_format` | string | no       | Format of output (`json`, `text`). Default `json`                       |

## Response

### 200

```json theme={null}
{
  "text": "Transcribed text output from Doubao ASR speech recognition model."
}
```

<Panel>
  <RequestExample>
    ```bash curl theme={null}
    curl --request POST \
      --url https://api.omnimux.ai/v1/audio/transcriptions \
      --header 'Authorization: Bearer sk-...' \
      --header 'Content-Type: multipart/form-data' \
      --form 'file=@audio.mp3' \
      --form 'model=doubao-asr-bigmodel'
    ```
  </RequestExample>

  <ResponseExample>
    ```json 200 OK theme={null}
    {
      "text": "Transcribed text output from Doubao ASR speech recognition model."
    }
    ```
  </ResponseExample>
</Panel>