Anyone using NotebookLM (now Gemini Notebook) for research?

Google quietly renamed NotebookLM to Gemini Notebook this year, and I don't think enough educators have noticed the shift or how much the tool has changed under the hood.The core idea is still the same: you feed it your own material (lecture notes, PDFs, articles, whatever), and it only answers from those sources. No wandering off into general knowledge, no made-up citations. Every answer links back to the exact passage it came from, which matters a lot when you're trying to trust an AI tool with actual coursework.What's newer is how far it's pushed past "chat with your documents." It can turn a stack of readings into an audio discussion between two AI hosts or a narrated video summary, useful if you want to give students an alternative format instead of another wall of text. It'll also generate flashcards and quizzes straight from your source material and pull mind maps or slide decks out of dense reading, which could save a fair amount of prep time.For research-heavy work, there's a mode that searches the web on its own, then folds cited sources back into your notebook, handy for building a working bibliography without doing all the searching by hand.The free tier is fairly generous for classroom use, and nothing is locked behind a paywall; paying more just raises your usage limits.Curious whether anyone here has actually tried the newer study tools and audio/video features in a classroom setting, and how well AI-generated flashcards and quizzes hold up against ones...