Hi there!

Today significant research is going on in Artificial Intelligence and also it is currently incorporated in every field.CSE is a core branch and there are always evergreen opportunities for it.When it comes to CSE (AI) it is a specialisation branch.You have ample of opportunities in research field with high packages.You have interest in this field you may very well choose this branch.ECE is mostly chosen commonly by many  Engineering students.Though there are many core. opportunities for this branch most of the students get placed in software companies.Today's world is very competitive,so you have to prove yourself to be the best in whatever branch you take.Everything depends on how you utilise it.

Hope this helps.

All the best!!