New Release

Natural expressive voice synthesis

Supertone API CLOSED BETA
Join Closed Beta

Empowering Voices,
Simplifying AI Integration

Bring your service and contents to life with Supertone API.
Over 90% off
$0.1 /min.
+ Full voice access during Closed Beta. Pay as you go. See details
Join Closed Beta
API Documentation
Trusted by Industry Leaders

Why Supertone API?

Realislistic & Controllable Voice Synthesis

01

Unparalled Expressiveness

Proven nautral-sounding Korean synthesis, expanding to other languages with 50+ voices coming in vibrant styles
02

Precise Voice Control

Extensive control over voice attributes like pitch shift, pitch variance, and speed.
03

Super Easy Integration

Integrate with Voice AI in just 3 steps: Get API key, Select a voice, and Call API.

See Quick Start Guide →

Multilingual Support

Supertone API starts with Korean, Japanese and Enligsh. We're planning to expand to global languages backed by deep understanding of Asian languages.

Cutting-edge Voice AI Coming to Supertone API

We're only starting with text-to-speech technology. Supertone's proven Voice AI technologies are soon to be provided in API.

Voice Cloning

AI voice replication from 10-second voice upload.
Preview in
Supertone Play

Voice Conversion

Transform a voice into another in no time.
Preview in
Supertone Shift

Voice Separation

Separate vocals, reverb, background in music.
Preview in
Supertone Clear

Endless Possibilities with Supertone API

Maximize the potential of Voice AI with Supertone's diverse voices.

Vivid & full of character

Real-time conversation with AI character

Miya
KO
JP
EN
Pleasant & comfortable

Audiobook &
content creation

Jiho
KO
JP
EN
Natural
& formal

AI announcer voice-overs
‍

Hannah
KO
JP
EN

Get Started with Supertone API

Hey, I'm new!
New to text-to-speech technology? Want to experience Supertone API first-hand? Let's start with joining closed beta.
Join Closed Beta
Need additional support?
Have an advanced use case? Need a custom voice or want to discuss additional rate limits or latency expectations?
Contact Us

Pricing

$0.1 /min.
+ Full voice access during Closed Beta. Pay as you go. See details
⦁ Total usage will be calculated by rounding down to the nearest minute.
⦁ The billing cycle is 15th and the last day of each month.
⦁ Invoices will be issued one daty after the billing cut-off date and sent to your email.
See details
Join Closed Beta
API Documentation

FAQ

Which languages are supported?

We currently support Korean (ko), Japanese (ja), and English (en), with optimized voice models for each language.

How do I get started with the API?

You can quickly integrate and use Supertone API in just three steps: obtaining API key, selecting avoice, and calling our APIs. For more details, please check our Quick Start Guide.

How is pricing calculated?

During the closed beta period, you will be charged $0.1 per minute of generated voice content.

Can I create a custom voice for my project?

To create a custom voice in closed beta period, you need to sign up for our Enterprise plan.

What are the rate limits for API reuests?

You can make up to 20 calls per minute. Exceeding this limit may result in slower response times or errors.
See all FAQs in API Documentation

Customer Support

For technical support inquiries, please email to
techsupport@supretone.ai
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