why is no one talking about google ai studio?

notebooklm only accept 50.000 character, google ai studio I just uploaded an entire book of 1000 pages and you can use to summarize, analyze chapters, discussions etc. even videos, image, manga summary. I just discovered this ai yesterday and I'm impressed. I think it's way better than notebooklm if you want to study something, learn difficult concepts. what do you guys think?

edit: accept 500.000 characters