AI tools for Korea · Voice & speech · Korean

Supertone (수퍼톤)

Korean voice AI company offering Supertone Play (TTS with 150+ voices), Shift (real-time voice changer), audio plugins, and a voice API.

Korean: Korean-native voice AI rooted in Seoul National University research; the company itself documents Korean TTS quality as a core strength, with Korean/Japanese/English support. (evidence) · English docs: yes · Payment from abroad: confirmed — USD self-serve subscription page for Supertone Play (play.supertone.ai/subscription). · verified 2026-07-04

What it is

Supertone is a Korean voice AI company whose product line, as presented on its official site (supertone.ai/en), includes Supertone Play, a text-to-speech service with a library of 150+ voices; Shift, a real-time voice changer; audio plugins; and a developer voice API. The company positions Korean-language TTS quality as a core strength and documents this in its own case-study material. Supported languages listed by the company include Korean, Japanese, and English. Its technology is rooted in research originating at Seoul National University, per the company's own materials.

Who uses it in Korea

In Korea, Supertone is used for content production workflows that need Korean-native synthetic voices: game and media dubbing, character voices, and narration for video content. Its real-time voice changer (Shift) and audio plugins target studios and creators working inside existing audio pipelines, while the API targets teams embedding Korean TTS into their own products.

For businesses entering Korea

For a foreign business localizing products or content into Korean, Supertone offers Korean-native TTS from a vendor that treats Korean as a first-class language rather than one entry in a long multilingual list, alongside Japanese and English support for regional coverage. The official site has a full English version, and overseas self-serve subscription for Supertone Play is available, so evaluation does not require a Korean entity or Korean-language procurement.

What we verified

We confirmed the English official site and product line at https://www.supertone.ai/en, and the company's own documentation of Korean TTS quality at https://www.supertone.ai/en/work/the-number-one-texttospeech-ai-voice-in-korean-eng (note this is a first-party claim, not an independent benchmark). Overseas payment is confirmed: a USD self-serve subscription page for Supertone Play exists at play.supertone.ai/subscription (verified 2026-07-04). We found no independent English-language reviews of the product; independent quality assessments are unknown.

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