Best AI for making notes and summary from PDF.

I am studying for a certification, my exam is in a few days and there are a lot of subjects left to cover I am thinking of using AI to help me in this. If you guys could recommend best AI which could help me generate notes and summarise from the PDF I upload with High accuracy. And could help me in cover long chapters in short time with these notes and summary. Length of PDFs would be close 30 pages.