Which is best? Built in or Web based AI background removal?

Built-in AI background removal: Supports photos, GIFs and videos. Is faster and can be used with live view. Does not need an internet connection.

Web based AI background removal: Supports photos only. Provides higher quality results. Is slower because it requires an internet connection. Requires an extra subscription to a third party service

Both work with external Canon camera and cameras built into the iPad/iPhone.

You can also combine built-in removal for live view with web based AI background removal for photos taken with an external camera