AI & Models
Practice, review, and explanation — all driven by one model layer.
Chat Partner handles conversation, Writing Workshop handles review, and Question Recognition handles explanation. They share a single model layer, so you can switch between cloud and local models at any time.
Chat Partner
Speak, and something speaks back. Fixed on the spot.
Twenty-plus roles cover interviews, travel, campus, and the workplace. Free Chat keeps the conversation going, while Correction Mode flags phrasing problems and offers more natural alternatives.
- Character personas and speech-rate control
- Sentence-by-sentence corrections and alternatives
- Save new words from a chat with one click
Model Center
The models live on your Mac, not on someone else's server.
Several open-source models are built in and ready to download. Once downloaded they run locally, so you can chat offline. Switch back to cloud when you need stronger results, or let Auto decide based on network and battery.
- Download, switch, and delete in one click
- Shows each model's size and memory use
- Cloud credentials stored only in the system keychain
Cloud, or local?
There is no single right answer. It depends on whether you care more about quality, privacy, or battery life.
| How it runs | Quality | Needs internet | Data leaves your Mac | Best for |
|---|---|---|---|---|
| Cloud model | Best | Yes | Yes (request content only) | Writing review, complex explanations |
| Local model | Good enough | No | No | Daily practice, offline study |
| Automatic | Adaptive | As needed | Depends on the mode chosen | The default most of the time |
Common questions about the AI
Start talking
Just chat for five minutes.
Download and start right away. Local models download on demand, and you can try the cloud first without downloading anything.