AsyncFlow API
  1. Voice Management
AsyncFlow API
  • Welcome to AsyncFlow API
  • Get Started
  • API Reference
    • API Status
      • API Status Check
    • Text-to-Speech
      • Text to Speech (Stream)
    • Voice Management
      • Clone Voice
        POST
      • List Voices
        POST
      • Get Voice
        GET
      • Update Voice
        PUT
      • Delete Voice
        DELETE
      • Get Voice Preview
        GET
  1. Voice Management

Clone Voice

POST
https://api.async.ai/voices/clone
Clone your voice from 5 second of audio clip
Request Request Example
Shell
JavaScript
Java
Swift
curl --location --request POST 'https://api.async.ai/voices/clone' \
--header 'x-api-key: <api-key>' \
--header 'version: v1' \
--form 'audio=@"cmMtdXBsb2FkLTE3NDQxMTUwOTk4MzQtMg==/example.wav"' \
--form 'name=""' \
--form 'description=""' \
--form 'language=""' \
--form 'enhance=""' \
--form 'transcript=""'
Response Response Example
200 - Example 1
{
    "id": "9h5835677245-85b3-85b3-c527-9h5835677245",
    "name": "Voice 1",
    "description": "My First AsyncFlow Voice",
    "language": "en"
}

Request

Header Params
x-api-key
string 
required
Example:
<api-key>
version
string 
required
Example:
v1
Body Params multipart/form-data
audio
file 
required
Audio clip file
Example:
cmMtdXBsb2FkLTE3NDQxMTUwOTk4MzQtMg==/example.wav
name
string 
required
Voice name
description
string 
optional
Voice description
language
enum<string> 
required
Voice language
Allowed value:
en
enhance
boolean 
required
Whether to enhance (remove background noise of) the audio clip before cloning
transcript
string 
optional
Audio clip transcription

Responses

🟢200Success
application/json
Body
id
string 
required
Voice id
name
string 
required
Voice name
description
string 
required
Voice description
language
enum<string> 
required
Voice language
Allowed value:
en
🟠429RATE_LIMIT_EXCEEDED
🟠401INVALID_API_KEY
🟠404VERSION_NOT_FOUND
🟠400INVALID_LANGUAGE
🟠400FORMAT_NOT_RECOGNIZED
🔴500Server Error
🟠429VOICE_CLONE_LIMIT_EXCEEDED
🟠400SHORT_SPEECH_DURATION
🟠400BAD_SPEECH_QUALITY
🟠413FILE_TOO_LARGE
Modified at 2025-06-26 10:45:42
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Text to Speech (Stream)
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