> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# STTInputAudio - Python SDK

> STTInputAudio method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

Base64-encoded audio to transcribe

## Fields

| Field     | Type  | Required             | Description                                                                                   |
| --------- | ----- | -------------------- | --------------------------------------------------------------------------------------------- |
| `data`    | *str* | :heavy\_check\_mark: | Base64-encoded audio data (raw bytes, not a data URI)                                         |
| `format_` | *str* | :heavy\_check\_mark: | Audio format (e.g., wav, mp3, flac, m4a, ogg, webm, aac). Supported formats vary by provider. |