There already exists an app that will, from photos of your pile, pick out models you can make from a large library of existing models. Though IIRC that has been around long enough that it isn't quite using what people are currently calling AI (instead using older ML techniques for brick identification, and a basic DB search to pick out the valid plans for the resulting list of bricks).

Already exists, put out by LEGO https://brickit.app/

My experience with that is that it gives you unbelievably simplistic builds, not the complicated things you might be imagining.

What I'd be interested in most is a robot that can assemble a model from a pile of bricks/parts.