What makes Nano Banana Pro different
Nano Banana Pro is the larger model in the family. It spends more effort understanding a prompt before it draws, which shows in the places where image models usually fail: exact numbers of objects, left-and-right placement, long headlines, small labels and diagrams.
It also holds on to details from reference images more faithfully, so a product label, a logo or a person's features survive an edit intact more often.