The three engines
Fast, Global, Built-in.
Settings shows one choice: which engine to use. Everything below it, including which Whisper model your device gets, is decided by the app.
Fast · recommended
Parakeet TDT 0.6B v3
NVIDIA's Parakeet model for 25 European languages including English. Quick on every supported device, with speaker labels.
- Download
- 483 MB, once
- Languages
- 25, detected automatically
- Runtime
- FluidAudio 0.15.7
- License
- CC BY 4.0
Global · 99 languages
Whisper Small or Base
OpenAI's Whisper for everything else, from Hindi to Japanese to Arabic. Slower than Fast. On iPhone and iPad, Base is the default; Settings also offers Tiny (faster, less accurate) and Small (more accurate, slower, warms the phone on long recordings). Every Mac uses Whisper Large v3 Turbo and transcribes in the spoken language.
- Download
- 491 MB (Small) or 151 MB (Base), once
- Languages
- 99, detected automatically
- Runtime
- WhisperKit 1.1.0
- License
- MIT
Built-in · English
Apple Speech
The recognizer already on your device. English only, nothing to download, ready the moment you allow Speech Recognition.
- Download
- None
- Languages
- English
- Runtime
- iOS and macOS Speech framework
- Speaker labels
- Not available
Speaker labels come from a separate 21.6 MB on-device model (FluidAudio 0.15.7, CC BY 4.0) that installs with Fast or Global. It labels voices as Speaker 1, Speaker 2, and so on, and can recognise you from an optional My Voice enrollment.