Tangentially, https://github.com/finnvoor/yap

  A CLI for on-device speech transcription using Speech.framework on macOS 26 

The MacStories article made it seem about 2x as fast as Whisper, but there's no network or shared servers involved, so it's effectively faster.

Faster, but... quality? I would take something 10× _slower_ than Whisper 3 if it meant a 5% increase in quality.