Audio Models

Overview

Use GET /api/v1/audio-models to discover the currently available audio models. The response includes both text-to-speech (TTS) and speech-to-text (STT) models. This endpoint is cacheable. Refresh it periodically and do not hardcode audio model capabilities in your client.

Endpoint

GET https://nano-gpt.com/api/v1/audio-models

Authentication

Authentication is optional.

Authorization: Bearer YOUR_API_KEY
x-api-key: YOUR_API_KEY

Query Parameters

Parameter	Type	Default	Description
`detailed`	boolean	`true`	Include names, descriptions, pricing, capabilities, and supported parameters.
`type`	string	`all`	Filter by audio model type. Allowed values: `all`, `tts`, `stt`.

Response

{
  "object": "list",
  "data": [
    {
      "id": "tts-model-id",
      "object": "model",
      "name": "Display name",
      "description": "Model description",
      "architecture": {
        "modality": "audio",
        "input_modalities": ["text"],
        "output_modalities": ["audio"]
      },
      "pricing": {
        "currency": "USD"
      },
      "capabilities": {
        "text_to_speech": true,
        "speech_to_text": false
      },
      "supported_parameters": {}
    }
  ],
  "meta": {
    "count": 1,
    "generated_at": "2026-05-07T12:00:00.000Z"
  }
}

When type is not all, meta may include the active filter.

Model Types

Type	Description
`tts`	Text-to-speech models for `POST /api/v1/audio/speech` and related TTS endpoints.
`stt`	Speech-to-text models for transcription endpoints.
`all`	Both TTS and STT models.

Example

curl "https://nano-gpt.com/api/v1/audio-models?type=stt&detailed=true" \
  -H "x-api-key: $NANOGPT_API_KEY"

Notes

Supported parameters vary by model, including voices, formats, streaming support, file formats, language support, diarization, timestamps, and max input size.
Use this endpoint instead of hardcoding audio model capabilities.
The response is cacheable, but model availability can change.

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Endpoint Examples

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Partner

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Overview

Endpoint

Authentication

Query Parameters

Response

Model Types

Example

Notes

​Overview

​Endpoint

​Authentication

​Query Parameters

​Response

​Model Types

​Example

​Notes

Overview

Endpoint

Authentication

Query Parameters

Response

Model Types

Example

Notes