A 120M voice-cloning TTS that runs in a browser tab, Apache 2.0.

Halo Neuro, building speech restoration for ALS and post-stroke aphasia, open-sourced sopro-v2-turbo: 120M parameters, zero-shot voice cloning from a short reference clip, English, German, French and European Portuguese. On an Apple M3 CPU it reaches 0.24 RTF offline and 0.21 RTF streaming with ~300ms time-to-first-audio, and 0.07 RTF on an H100, with ONNX builds for local and in-browser deployment. (Hugging Face) Small enough to ship client-side with no GPU budget, which is rare in TTS.