Hey, thanks for the suggestion! This is a useful feature that several users have requested.
There are similar requests:
- Toggle between favourite models by keyboard shortcuts and "dock" buttons
- Hotkey to Switch to pre-configured models?
The team is tracking these requests. For now, the fastest way to switch is to use Cmd+/ (Mac) or Ctrl+/ (Windows/Linux) to open the model dropdown, then use the up and down arrow keys to select one.