Synchronous Voice Cloning

Suitable for short text (less than 500 characters) voice cloning, returns results immediately.

Request Information

Method: POST
Endpoint: /api/instant/clone-sync
Content Type: multipart/form-data

Request Parameters

Parameter	Type	Required	Description
`audio`	File (binary)	Yes*	Audio file for voice cloning. Supported formats include WAV, MP3, and M4A. You must provide either `audio` or `audio_url`.
`audio_url`	string	Yes*	Publicly accessible audio file URL (WAV, MP3, M4A) for voice cloning. You must provide either `audio` or `audio_url`.
`text`	string	Yes	The text you want to synthesize with the cloned voice.
`api_key`	string	Yes	Your unique API key for authentication and access. This key is used to verify your requests and link them to your user account.
`type`	int	Yes	1. Return streaming media 2. Return a playable audio_url (valid for 24 hours)

*Note: Either audio or audio_url parameter is required, at least one must be provided.

Response

Success Response

Return Type: Returns streaming media or audio_url based on the type parameter


{
    "audio_url": "https://pub-86e8fdaa1c484bfb856e9d0f2cf54e2a.r2.dev/1748152296147_89ce52d0_voice_clone_sync_b5f0ff03.mp3"
}

Error Response

400 Bad Request: Missing required parameters (e.g., api_key, or neither audio nor audio_url provided)

Example Requests

Using Audio File


curl -X POST https://aivoiceclonefree.com/api/instant/clone-sync \
  -F "[email protected]" \
  -F "text=Hello, this is a test message" \
  -F "api_key=your_api_key_here" \
  -F "type=2"

Using Audio URL


curl -X POST https://aivoiceclonefree.com/api/instant/clone-sync \
  -F "audio_url=https://example.com/sample.mp3" \
  -F "text=Hello, this is a test message" \
  -F "api_key=your_api_key_here" \
  -F "type=2"

Usage Instructions

Text Length Limit: Suitable for short text less than 500 characters
Audio Format: Supports WAV, MP3, M4A formats
Return Type:
- type=1: Returns audio stream
- type=2: Returns audio file URL (valid for 24 hours)
Response Time: Usually returns results within seconds