Here you can find some rich pros and cons of Mavic Air vs Mavic Pro, but here I'll name just several.
Mavic Pro: more flight time (27 minutes vs 21 minutes), operates on OcuSync, has LCD screen on controller, max video resolution (C4K: 4096×2160 24p vs 4K Ultra HD: 3840×2160 30p).
Mavic Air...