You could try ours. They're very small and english only right now (training Spanish now). But they're a CPU optimized architecture and even the largest size will work on a single thread with realtime streaming.
https://huggingface.co/collections/futo-org/asr4all
You can run them client-side using wasm-simd. I setup a space for the small sized model. There's a big step up in accuracy going to the medium size though:
That's fascinating. Are these for your keyboard?
You may have gone too fast honestly. Something like parakeet runs fast enough and seems to have much lower wer