List Voice Changer Models

GET 
https://api.knoxstudio.ai/v1/speech-to-speech/models

Returns Voice Changer models. Use id as model_id. Default eleven_multilingual_sts_v2. See Voice Changer.

Authentication is optional (public catalog 60/min, cached 5 minutes; a token filters the list).

Request

This endpoint does not require any request parameters.

Request Headers

Name	Type	Required	Description
Authorization	String	No	Optional Bearer <token>. Omit for the public catalog. xi-api-key is also accepted.

cURL Example

curl -X GET https://api.knoxstudio.ai/v1/speech-to-speech/models

Response

Success Response (200)

{
  "data": [
    {
      "id": "eleven_multilingual_sts_v2",
      "canonical_slug": "eleven_multilingual_sts_v2",
      "name": "ElevenLabs Multilingual STS v2",
      "created": 1699920000,
      "description": "Multilingual voice changer. Transform audio from one voice to another while keeping emotion, timing, and delivery. Up to 10 minutes per request. Billed per audio minute.",
      "chinese_description": "多语言变声模型，转换音色并保留情绪、节奏与表达，单次最长 10 分钟，按音频分钟计费。",
      "max_duration_seconds": 600,
      "pricing": { "per_minute": "0.17" },
      "architecture": {
        "modality": "audio",
        "input_modalities": ["audio"],
        "output_modalities": ["audio"],
        "tokenizer": "elevenlabs"
      }
    }
  ]
}

Also listed: eleven_english_sts_v2 (per_minute: 0.17, English only).

Response Schema

Name	Type	Description
data[].id	string	Send as model_id.
data[].max_duration_seconds	integer	600 (10 minutes).
data[].pricing.per_minute	string	USD per audio minute (0.17).

Error Responses

Validation uses HTTP 422:

{
  "detail": [
    {
      "loc": ["body", "field"],
      "msg": "…",
      "type": "value_error"
    }
  ]
}

Other errors use { "detail": "message" }.

Status	When
400	WebSocket path called without Upgrade: websocket.
401	Missing or invalid API key.
402	Insufficient credits.
403	Token is not allowed to use this model.
404	Resource not found.
422	Validation error.
429	Rate limit exceeded.
500	Internal server error.