LocalClaw/TTS/Supertonic 3
Local TTS model

Supertonic 3

Lightning-fast on-device TTS that runs with ONNX Runtime and no cloud call. Around 99M parameters, 31 languages, better reading stability and expression tags like laugh, breath and sigh.

Edge ready text-to-speech generation 31 languages OpenRAIL-M
Compare TTS models Open source page
Quality
8.8/10
Speed
9.8/10
Model size
0.2 GB
Voices
Preset voice styles + downloadable custom style embeddings

Can Supertonic 3 run locally?

Supertonic 3 can generate speech locally for private voice workflows. Start with pip install supertonic.

OpenRAIL-M license. Review upstream restrictions before commercial use.

pip install supertonic Upstream source
realtimelow-latencymultilingualemotion

Audio profile

Quality
8.8
Speed
9.8
Local
9.3

Best fit

Supertonic 3 is best for fast on-device voice responses and local assistants.

Hardware: cpugpuappleedge

Model details

Type
Local TTS model
Family
supertonic
Latency
ultra-low
Formats
onnx
Languages
en, ko, ja, ar, bg, cs, da, de, el, es, et, fi, fr, hi, hr, hu, id, it, lt, lv, nl, pl, pt, ro, ru, sk, sl, sv, tr, uk, vi
Context
Open-weight ONNX model, 31 languages, practical local inference

Install locally

01
Check runtimeConfirm the backend supports onnx on your machine.
02
Install modelUse the upstream command or repository instructions.
03
Test locallyRun a short private audio prompt before moving into production workflows.
pip install supertonic

Good for

  • text-to-speech generation
  • Edge ready local workflows
  • realtime, low-latency, multilingual

Watch before shipping

  • Validate pronunciation, latency and artifacts with your own voice samples.
  • Review the upstream license and acceptable-use notes.
  • Benchmark on your target CPU, Apple Silicon or GPU setup.

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