Stellar quality. Highly portable. No strings attached. Supports 8 kHz and 16 kHz. Models < one megabyte in size. Supports 30, 60 and 100 ms chunks. Trained on 100+ languages, generalizes well. One chunk ~ 1ms on a single thread. ONNX up to 2-3x faster. https://github.com/snakers4/silero-vad