Natural and expressive speech synthesis

API

Empowering Voices, Simplifying AI Integration

Bring your service and content to life with Supertone API.
API Console
API Docs
Trusted by industry leaders

Endless possibilities of AI voices

Discover versatile use cases powered by Supertone API’s diverse voices.

AI Character Chatbot

Create immersive, interactive characters using AI voices that understand emotions and respond in real time.

Miya

“Wanna talk with me?”

Audiobook Production

Enhance the quality of audiobooks and educational content with a soothing voice that stays pleasant even over long listening sessions.

Jiho

“That night, something strange happened in the village.”

Announcements & AI Newsreader

Deliver public info, corporate content, or news clearly and reliably with a crisp, trustworthy AI voice.

Hannah

“We will now begin the announcement.”

Multilingual Content Dubbing

Express Korean, English, and Japanese naturally with a single voice — for more efficient and consistent global content production.

Andy

“Hello. 안녕하세요. こんにちは.”

Supertone Voice AI — now available via API

Text-to-speech is just the beginning. More features are coming to the API.

Voice Cloning

Upload a voice sample of around 10 seconds and replicate it as an AI voice. You can now instantly call your cloned voice — registered via Supertone Play — directly through the API.
※ Voice cloning is currently available only via Supertone Play. The API supports playback of previously registered voices only.
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Voice Conversion

Instantly transform a voice into a different tone or style. Perfect for games, animation, and content dubbing across various genres.
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Voice Separation

Separate the speaker’s voice, background sounds, and sound effects from a single audio source. Ideal for post-production and content editing workflows.
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Get Started with Supertone API

Quickstart with docs
Want to integrate without consultation? Start quickly with our console and guide.
Quickstart Guide
Need more support?
For advanced needs like custom voices or SLA discussions, contact our team to find the best integration path.
Contact Us

Pricing

Effective from April 17, 2025.
Effective from April 17, 2025.

View Open Promotion Benefits

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Grand Opening Unlimited Promotion – Until April 16, 2025!
Exclusive Benefits
Get 2 weeks of free trial, then standard fees apply.
• Unlimited voice cloning
• Unlimited usage
• Full access to over 150 premium voices

40% off

Personal plan

Business plan

Free

!

$0

Usage
(Generation Time / min.)
3,000 Credits
(Approx. 5 min.)
Voices
Full Voice Access
Voice Cloning
Unlimited Use
(Script Reading Required)
Download
Unlimited Downloads
Available API
•Cloned Voice
•Text-to-speech
(Rate limit: 20 requests / min.)
Licensing
‘Supertone’ Attribution Required
Licensing
‘Supertone’ Attribution Required

Starter

Create 1 short-form video every day!

$2.99 /mo.

Usage
(Generation Time / min.)
20,000 Credits
(Approx. 30 min.)
*Credits reset monthly, no carryover
Voices
Full Voice Access
Voice Cloning
Unlimited Use
Downloads
Unlimited Downloads
Available API
•Cloned Voice
•Text-to-speech
(Rate limit: 20 requests / min.)
Licensing
Commercial Use
Licensing
‘Supertone’ Attribution Required

Creator

30%OFF

🎉 Shift 2.0 Launch, first month discount only!

$14. 99  $10.49/mo.

Usage
(Generation Time / min.)
100,000 Credits
(Approx. 150 min.)
*Credits reset monthly, no carryover
Voices
Full Voice Access
Voice Cloning
Unlimited Use
Downloads
Unlimited Downloads
Advanced Features
Word & Line Spacing Control NEW
Available API
•Cloned Voice
•Text-to-speech
(Rate limit: 30 requests / min.)
Licensing
Commercial Use

Pro

30%OFF

🎉 Shift 2.0 Launch, first month discount only!

$79.99  $55.99/mo.

Usage
(Generation Time / min.)
500,000 Credits
(Approx. 800 min.)
*Credits reset monthly, no carryover
Voices
Full Voice Access
Voice Cloning
Unlimited Use
Downloads
Unlimited Downloads
Advanced Features
Word & Line Spacing Control NEW
Available API
•Cloned Voice
•Text-to-speech
(Rate limit: 60 requests / min.)
Licensing
Commercial Use

Enterprise

Recommended for large businesses with custom needs

• Custom pricing with volume-based discounts
• Flexible rate limits
• Dedicated account manager
• Priority support
Contact us

Customer Support

Check out the Quickstart guide to get started right away.
Quickstart Guide
If you have any questions, feel free to contact our support team.
Customer Support
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