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Voice Cloning API — Clone Any Voice via REST

Clone any voice from a 4-second sample and speak any text in 48 languages with one POST request. Accents and cadence carry over. Plans from $21/month.

Choosing a provider? See the voice cloning API comparison of sample length, API access and price per minute for ElevenLabs, Cartesia, Fish Audio and ModelsLab.

Voice Cloning API quick start

Clone a voice from a 4-second sample and synthesize speech with one POST request to /api/v6/voice/text_to_audio. Returns a hosted MP3/WAV URL.

Python — synthesize speech from a cloned voice

Python
1import requests
2
3response = requests.post(
4 "https://modelslab.com/api/v6/voice/text_to_audio",
5 json={
6 "key": "YOUR_API_KEY",
7 "prompt": "Hello, this is a cloned voice speaking naturally.",
8 "voice_id": "your-cloned-voice-id",
9 "language": "english",
10 "emotion": "neutral",
11 "speed": 1.0
12 }
13)
14
15print(response.json()["output"][0])

JavaScript — voice cloning + multilingual TTS

JavaScript
1const response = await fetch('https://modelslab.com/api/v6/voice/text_to_audio', {
2 method: 'POST',
3 headers: { 'Content-Type': 'application/json' },
4 body: JSON.stringify({
5 key: 'YOUR_API_KEY',
6 prompt: 'Bonjour, voici une voix clonée parlant naturellement.',
7 voice_id: 'your-cloned-voice-id',
8 language: 'french',
9 emotion: 'happy',
10 speed: 1.0,
11 }),
12});
13
14const data = await response.json();
15console.log(data.output[0]);

cURL — quick test from terminal

bash
1curl -X POST 'https://modelslab.com/api/v6/voice/text_to_audio' \
2 -H 'Content-Type: application/json' \
3 -d '{
4 "key": "YOUR_API_KEY",
5 "prompt": "Welcome to ModelsLab voice cloning API.",
6 "voice_id": "your-cloned-voice-id",
7 "language": "english",
8 "emotion": "neutral",
9 "speed": 1.0
10 }'

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Clone a voice from a sample of at least 4 seconds and use it on any text to speech request.

Why Choose ModelsLab

Key advantages that set us apart

User-friendly interface
Intelligent phonetic transcription
Text-to-speech (TTS) developer-first API
Prosody modeling
Voice cloning from a 4-second sample
Deep-learning voice models
Paralinguistic features
Multilingual voice clones
Voice sampling and modulation
Linguistic diversity in voice cloning with support for 48 languages
Support by email, live chat and Discord
Flexible and smooth integrations
Large Global Community
No Questions Asked 100% Refund Policy

Rapidly Clone Voices and Make Them Human

You can create natural-sounding voices and clone audio using the voice cloning API.

Clone Your Voice in Any Language

Select multiple deep-learning voice models from our growing library; clone from other samples by uploading your voice (or your clone’s) or share via URL. Clone in 48 languages, including Hindi, English and Spanish.

Generate Text-to-Speech

Customize voice clones with text-to-speech prompts. Edit and refine your narratives with the text-to-speech (TTS) AI voice cloning API.

Transfer Styles and Enjoy Voice Feature Extraction

Extract unique nuances, traits, accents, and emotions from samples. Transfer or infuse vocal attributes into cloned voices for deeper voice personalization.

Clone From a Short Sample

Upload a clean speech sample of at least 4 seconds, then use the cloned voice on any text to speech request in 48 languages.

Full Data Security

Complete data security safeguards your cloned voices against unauthorized access. End-to-end audio data encryption provides peace of mind. Only authorized users can access the voice cloning API.

Clone Your Voice in Any Language

How to Generate Voice Clones Step-by-Step?

Creating cloned voices using the ModelsLab Voice Cloner is simple and easy. Just follow these four steps.

STEP 01
STEP 01

Upload your Samples

Record and upload audio files of your voice and the person's voice that you want to clone.

STEP 02
STEP 02

Analyze and Synthesize

Our deep learning algorithms will analyze your uploaded voice data and capture its unique traits.

STEP 03
STEP 03

Edit and Refine

You can edit and refine your cloned voices, change them to multiple languages, and adjust vocal attributes such as reverb, pitch, volume, playback speed, and more.

STEP 04
STEP 04

Generate and Export

Download your generated voice clone in any audio file format. Render and export as MP3, WAV, OGG, and others.

Explore Voice Cloning Features

Clone Your Voice in Any Language

Select multiple deep-learning voice models from our growing library; clone from other samples by uploading your voice (or your clone’s) or share via URL. Clone in 48 languages, including Hindi, English and Spanish.

Generate Text-to-Speech

Customize voice clones with text-to-speech prompts. Edit and refine your narratives with the text-to-speech (TTS) AI voice cloning API.

Transfer Styles and Enjoy Voice Feature Extraction

Extract unique nuances, traits, accents, and emotions from samples. Transfer or infuse vocal attributes into cloned voices for deeper voice personalization.

Clone From a Short Sample

Upload a clean speech sample of at least 4 seconds, then use the cloned voice on any text to speech request in 48 languages.

Full Data Security

Complete data security safeguards your cloned voices against unauthorized access. End-to-end audio data encryption provides peace of mind. Only authorized users can access the voice cloning API.

Our Popular Use Cases

Here is where you can use our AI Voice Cloning API.

Clone voices for your audio podcasts and create unique character voices.

Podcasts

Voice cloning by language

Language pages with cloning examples for each language.

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Unlimited Open Source Models
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Testimonials

Trusted by Enterprise Teams Worldwide

Enterprise Success Stories

“

ModelsLab's Voice Cloning API has revolutionized how we approach character development in our games. It's like having a studio full of voice actors at our fingertips!

Alex Rivera
AR

Alex Rivera

Game Developer at TVC

“

The ease of creating lifelike voiceovers for our e-learning courses has dramatically increased engagement. A real breakthrough for educational content!

Priya Singh
PS

Priya Singh

Instructional Designer at TVC1

“

The LLM Chat API has dramatically helped me in how I approach chat integration. It's like giving an AI voice to my application, making it truly engaging. Thanks, ModelsLab!

John H.
JH

John H.

Developer Enthusiast at Mr

“

Voice Cloning from ModelsLab gave our marketing campaigns a unique edge with custom, realistic voiceovers. It's incredibly easy to use and effective.

Michael Chen
MC

Michael Chen

Digital Marketing Manager at TVC2

Get Expert Support in Seconds

We're Here to Help.

Want to know more? You can email us anytime at support@modelslab.com

View Docs

A clean speech sample of at least 4 seconds. A short, noise-free clip works better than a long recording with music or crosstalk.

POST https://modelslab.com/api/v6/voice/text_to_audio with `init_audio` set to the URL of the reference sample, `prompt` set to the text to speak and `language` set to the language of that text. The response carries a hosted audio URL, or an id to fetch when the request is queued.

No. Voice cloning is included on every plan at the same rate as plain text to speech: $0.001 per second of generated audio. There is no separate cloning tier; extra saved-voice uploads cost $1 per 10 from the wallet. Plans start at $21/month.

The voice API covers 48 languages, including Hindi, Bangla, Urdu, Tamil, Telugu, Arabic, Spanish and English. The same endpoint, plan and cloned voice work across all of them.

ModelsLab is a paid service. Plans start at $21/month, and Open Source Unlimited, with no limit on self-hosted open-weight models, is $149/month. Creating an account is free, but generating audio requires an active plan.

Yes, for voices you have the rights to clone. You own the audio the API generates. Cloning a real person requires their consent, and ModelsLab's terms prohibit impersonation.
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