Supertonic now supports 5 languages: 한국어 · Español · Français · Português · English

It’s built to run locally across a wide range of setups—from browser-based inference with WebGPU to small devices like mobile phones and Raspberry Pi.

Here are key features:

(1) Lightning fast — RTF 0.006 on M4 Pro

(2) Lightweight — 66M parameters

(3) On-device TTS — Complete privacy, zero network latency

(4) Flexible deployment — Runs on browsers, PCs, mobiles, and edge devices

(5) 10 preset voices — Pick the voice that fits your use cases

(6) Open-weight model — Commercial use allowed (OpenRAIL-M)

We hope Supertonic is useful for many applications. Thank you!

Demo: https://huggingface.co/spaces/Supertone/supertonic-2

Model: https://huggingface.co/Supertone/supertonic-2

Code: https://github.com/supertone-inc/supertonic