Resemble AIFastHigh

Chatterbox Multilingual

Chatterbox open-source TTS in 23 languages with instant voice cloning and emotion exaggeration control. Max 300 characters per request.

7 credits

per generation (max 300 characters)

23 language support including Korean

Instant voice cloning from short audio

Emotion exaggeration control

Language transfer with cloned voices

Fixed low price per generation

Run it right now

Test this model instantly in the Console Playground — no code required

Use with AI Assistant

Copy usage instructions for Claude, ChatGPT, or other AI

llms.txtllms.txt ↗

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "resemble-ai/chatterbox-multilingual",
  "input": {
    "text": "안녕하세요, 코어닷투데이입니다. 오늘도 좋은 하루 보내세요!",
    "language": "ko",
    "exaggeration": 0.5
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`text`	string	Yes	-	Text to synthesize (maximum 300 characters)
`language`	string	No	en	Language for synthesis (23 languages) ardadeelenesfifrhehiitjakomsnlnoplptrusvswtrzh
`reference_audio`	string	No	-	Reference audio for voice cloning (optional). Defaults to the language's default voice
`exaggeration`	number	No	0.5	Speech expressiveness (0.25-2.0). Neutral = 0.5
`temperature`	number	No	0.8	Controls randomness (0.05-5.0)
`cfg_weight`	number	No	0.5	Generation guidance (0.2-1.0). Use 0.5 for balance, 0 for language transfer
`seed`	integer	No	0	Random seed (0 for random)

How to Provide File Input

There are 3 ways to provide files for the reference_audio parameter:

Recommended

Direct Upload (Multipart)

Attach files directly to POST /v1/predictions/upload. No separate upload step needed.

curl -X POST "https://api.core.today/v1/predictions/upload" \
  -H "X-API-Key: cdt_your_api_key" \
  -F "model=resemble-ai/chatterbox-multilingual" \
  -F 'input={"prompt":"your prompt here"}' \
  -F "file:reference_audio=@your_file.png"

Image URL

Pass a publicly accessible URL directly. You can also use file_url from the Storage API.

{
  "model": "resemble-ai/chatterbox-multilingual",
  "input": {
    "prompt": "your prompt here",
    "reference_audio": "https://example.com/image.jpg"
  }
}

See the File Upload docs for more upload methods including Presigned URLs.

Common Parameters

Common parameters used when calling POST /v1/predictions.

Parameter	Type	Required	Default	Description
`model`	string	Yes	-	Model identifier
`input`	object	Yes	-	Object containing the model-specific parameters from the table above
`output_folder`	string	No	-	Folder path for output files (max 256 chars, '..' not allowed)
`webhook_url`	string	No	-	Webhook URL to call on completion
`is_public`	boolean	No	false	If true, output files are also available via permanent public URLs

Examples

Korean Voice Message

Short Korean announcement with the default voice

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "resemble-ai/chatterbox-multilingual",
  "input": {
    "text": "안녕하세요, 코어닷투데이입니다. 오늘도 좋은 하루 보내세요!",
    "language": "ko",
    "exaggeration": 0.5
  }
}'