List Text-to-Speech Models

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

Returns TTS models. Use id as model_id on convert/stream/WebSocket endpoints. See Text to Speech.

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

Request

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/text-to-speech/models

Response

Success Response (200)

{
  "data": [
    {
      "id": "eleven_multilingual_v2",
      "canonical_slug": "eleven_multilingual_v2",
      "name": "ElevenLabs Multilingual v2",
      "created": 1690848000,
      "description": "Stable, lifelike narration in 29 languages. Default TTS model. Up to 10,000 characters per request.",
      "chinese_description": "29 种语言的稳定拟真朗读，默认 TTS 模型，单次最多 10,000 字符。",
      "max_characters": 10000,
      "pricing": {
        "per_thousand_characters": "0.15"
      },
      "architecture": {
        "modality": "audio",
        "input_modalities": ["text"],
        "output_modalities": ["audio"],
        "tokenizer": "elevenlabs"
      }
    }
  ]
}

Also listed: eleven_v3 ($0.15 / 1K, 5,000 chars), eleven_v3_conversational, eleven_flash_v2_5, eleven_flash_v2, eleven_turbo_v2_5, eleven_turbo_v2 (low-latency models $0.10 / 1K).

Response Schema

Name	Type	Description
data[].id	string	Send as model_id.
data[].max_characters	integer	Per-request character cap.
data[].pricing.per_thousand_characters	string	USD per 1,000 characters.

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.