Generate speech from text

April 18, 2025 (October 1, 2025)

Table of contents

  1. Request Headers
  2. Request Body
  3. Responses
  4. Model
  5. Examples
  6. Try It

This endpoint generates speech up to 15 seconds long from text using Kling’s text-to-speech technology.

You can execute an unlimited number of TTS generations for free. This feature is available for all Kling subscription plans, including the free one.

https://api.useapi.net/v1/kling/tts/create

Request Headers 
Authorization: Bearer {API token}
Content-Type: application/json
# Alternatively you can use multipart/form-data
# Content-Type: multipart/form-data
Request Body 
{
  "email": "[email protected]",
  "speakerId": "speakerId",
  "text": "Text to be converted to speech",
  "speed": 1.0,
  "emotion": "happy"
}

  • email is optional when only one account configured.
    However, if you have multiple accounts configured, this parameter becomes required.

  • speakerId is required, a valid speakerId from GET /tts/voices.

  • text is required, the text to be converted to speech.

  • speed is optional, range from 0.8 to 2.0.
    Default is 1.0.

  • emotion is optional, must be one of the supported emotion keys for the selected voice.

Responses

  • 200 OK

    {
  "resource": "https://s21-kling.klingai.com/....mp3",
  "status": 99,
  "status_name": "succeed",
  "status_final": true
}

  • 400 Bad Request

    {
  "error": "Unable to locate speakerId"
}

  • 401 Unauthorized

    {
  "error": "Unauthorized",
  "code": 401
}

  • 500 Internal Server Error

    Kling uses a 500 response to indicate moderation and other issues with the input. It may be hard to separate actual 500 errors from moderation errors, so use the error field text and your best judgement to tell them apart, since the message field most often has very generic and perhaps misleading text.

    {
  "error": "The content you uploaded appears to violate the community guidelines. (CM_EXT.POther)",
  "message": "Service busy (CM_EXT.POther)"
}

Field resource will contain URL with generated mp3 audio file.

Model 
{ // TypeScript, all fields are optional
  resource: string        // URL to the generated MP3 audio file
  status: number          // Status code, e.g., 99 for succeed
  status_name: 'submitted' | 'failed' | 'processing' | 'succeed'  // Status name
  status_final: boolean   // Whether this is the final status
  message: string
  error: string
}
Examples 
  • curl -X POST "https://api.useapi.net/v1/kling/tts/create" \
   -H "Content-Type: application/json" \
   -H "Authorization: Bearer …" \
   -d '{"email":"[email protected]","speakerId":"speakerId","text":"Hello, world!"}'

  • const token = "API token";
const email = "Previously configured account email";
const apiUrl = "https://api.useapi.net/v1/kling/tts/create"; 
const response = await fetch(apiUrl, {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "Authorization": `Bearer ${token}`,
  },
  body: JSON.stringify({
    email: email,
    speakerId: "speakerId",
    text: "Hello, world!"
  })
});
const result = await response.json();
console.log("response", {response, result});

  • import requests
token = "API token"
email = "Previously configured account email"
apiUrl = "https://api.useapi.net/v1/kling/tts/create"
headers = {
    "Content-Type": "application/json", 
    "Authorization" : f"Bearer {token}"
}
data = {
    "email": email,
    "speakerId": "speakerId",
    "text": "Hello, world!"
}
response = requests.post(apiUrl, headers=headers, json=data)
print(response, response.json())
Try It