Blog

In-Depth Look at Supertone’s Global TTS Supporting 23 Languages!

December 5, 2025

As AI technology continues to evolve at lightning speed, Supertone is keeping pace with constant upgrades to deliver an even better TTS experience. Today, we’re thrilled to unveil two major model releases—yes, not one but two!

Designed to meet diverse creative needs, these additions bring more natural, expressive, and powerful voice generation than ever before. Get ready to explore the next-level TTS experience now available on Supertone Play.

Sona2: A Next-Generation Multilingual TTS Model Supporting 23 Languages

The biggest highlight of Sona2 is its ability to speak 23 languages fluently! With just a single voice cloning sample, it can produce natural speech in English, Korean, Japanese, Arabic, Hindi, Vietnamese, and many more—while preserving the original timbre.

🔥 Key Features

  • Revolutionary Global Content Production : No separate training or additional recordings needed for each language. Maintain the same voice while expanding effortlessly into global markets.
  • Human-like Natural Speech : Realistic pacing, breath sounds, and intonation for a lifelike delivery.
  • Customizable Voice Controls : Adjust pitch shift, pitch variance, speed, and more to create multiple voice variations from the same source voice.
  • Optimized for Long-Form Content : Perfect for YouTube videos, audiobooks, and other lengthy content where natural flow and contextual comprehension matter.
  • Impressive Non-Verbal Sound Support
    • Insert tags like <laugh> to generate real laughter or <clear> for throat-clearing sounds—bringing emotional nuance to your audio.

🌍 Supported Languages (23 total — the most of any Korean TTS!)

English, Korean, Japanese, Bulgarian, Czech, Danish, Greek, Spanish, Estonian, Finnish, Hungarian, Italian, Dutch, Polish, Portuguese, Romanian, Arabic, German, French, Hindi, Indonesian, Russian, Vietnamese

Supertonic: The World’s Fastest On-Device TTS

Supertonic is an on-device TTS solution with zero network latency. Even in poor network environments, you can generate audio instantly across browsers, mobile devices, or PCs.

⚡ Why It’s a Game Changer

  • Complete Security : With no data transmission, it’s ideal for sensitive use cases like finance or healthcare.
  • Universal Compatibility : Runs smoothly on everything—from regular computers without GPUs to edge devices.
  • Enables Brand-New Business Models : Unlock subscription-based services that were impossible with cloud-based TTS.

Unlimited TTS for Play Desktop Pro Plan Users

Play Desktop now offers unlimited Supertonic TTS access for users on the Pro plan and above.

🎁 Pro Plan Exclusive Benefits

  • Truly Unlimited TTS Use : Perfect for producing long videos, podcasts, or full audiobooks without restrictions.
  • Optimized Workflow : Local editing, file management, and batch generation—all in one seamless workflow.
  • Creator-Focused UX : Designed with features that creators and streamers genuinely need.

This unlimited service is coming in December—stay tuned!

Conclusion

Sona2 isn’t just another TTS model—it sets a new standard for human-like AI speech. With multilingual support across 23 languages and real-time on-device performance, it’s poised to transform the landscape of content creation.

Experience the future of voice today on Supertone Play.

View All Latest

< <