Supertone
Category: Voice / Speech AI
Supertone is an AI voice company that develops technology for creating hyper-realistic and expressive voices, including singing voices. The company's technology can be used for various applications, such as content creation, entertainment, and virtual assistants. Supertone was founded in 2021. The company is led by Kyogu Lee. Based in Seoul, South Korea. Team size: Approximately 60-70 employees. Total funding raised: Approximately $35.6 million (acquired by HYBE). Latest round: Acquisition, $36.5M, 2023-01, led by HYBE. Key investors include HYBE, Big Hit Entertainment, CJ E&M.
- Founded
- 2021
- Headquarters
- Seoul, South Korea
- Team size
- Approximately 60-70 employees
- Total funding
- Approximately $35.6 million (acquired by HYBE)
Value proposition
Supertone provides a full-stack Voice Intelligence Platform spanning pre-production (Play TTS), production (Shift voice changer), and post-production (Clear de-noise, Air reverb/EQ match), with on-device (Supertonic) and API options for creators and enterprises.
Products and solutions
Supertone Play, Supertone Shift, Supertone Clear, Supertone Air
Unique value
Full voice AI pipeline from TTS to real-time voice changing to post-production audio cleanup. On-device TTS (Supertonic) runs without server GPUs. 23-language support. Voice cloning in 10 seconds. Strong voice security and ethical AI focus.
Target customer
Content creators, entertainment companies, gaming studios, voice actors, enterprise businesses, and developers (API/SDK).
Industries served
Entertainment, Media, Gaming
Technology advantage
Supertone's core technology includes NANSY (Neural Analysis & Synthesis) foundation model, Sona Speech 2 (23-language TTS), and Supertonic (on-device ultra-fast TTS). Voice cloning in 10 seconds via Play. Voice security technology.
How they differentiate
Supertone's technology is distinguished by its ability to create hyper-realistic and expressive voices, including singing voices, which is a rare capability in the market. The company also emphasizes its 'voice security' technology to prevent misuse of its AI-generated voices.
Main competitors
Respeecher, Voicemod, Descript
Key partnerships
HYBE, AWS, Big Ocean, Jeong Jae-heon, Shin Kyung-sun, K-FAST AI Dubbing Project
Notable customers
HYBE, Big Ocean, AWS, Jeong Jae-heon (voice actor), Shin Kyung-sun (voice actor)
Major milestones
Acquired by HYBE for ~$36.5M (2023). Launched Supertone Play TTS platform (Feb 2025) — 310K users, 6.2M sentences generated. Launched Supertone Shift 2.0 real-time voice changer. Launched Supertone Air (reverb/EQ match plugin). Launched SYNDI8 virtual girl group. AWS Marketplace listing and K-FAST AI Dubbing Project across 22 countries. Supertonic on-device TTS became #1 on Hugging Face TTS category.
Growth metrics
Supertone Play reached 310K cumulative users and generated 6.2M sentences by Dec 2025. Used in 217+ countries. Supertonic became #1 in Hugging Face TTS category. Sona Speech 2 supports 23 languages.
Market positioning
A leading AI voice synthesis company under HYBE, expanding globally with AWS Marketplace listing, presence in 217+ countries, and 23-language TTS support. Strong in creator tools (Play, Shift) and enterprise voice AI.
Geographic focus
Global presence with strong Asian base. Used in 217+ countries. AWS Marketplace listing enables global enterprise reach. K-FAST project expanding Korean content across 22 countries. Strong engagement in Japan for Shift.
Patents and IP
Supertone holds several patents related to its core technologies, including voice synthesis, voice cloning, and voice security.
About Kyogu Lee
Kyogu Lee is the Co-founder and CEO of Supertone, an AI audio technology company that was acquired by HYBE. He is also a Professor at Seoul National University. He holds a PhD in Computer-Based Music Theory and Acoustics from Stanford University. His work focuses on the intersection of AI and audio, leading Supertone to develop innovative voice synthesis and enhancement technologies.
Official website: https://supertone.ai/