Google's AI notebook for research and study (formerly NotebookLM, renamed in July 2026): upload your own materials and the AI answers from them, citing where each answer comes from.
Best forTurning class notes, handouts and textbook chapters into a library you can ask questions about, and generating study guides, flashcards and quizzes for revision.
Free plan available (standard usage limits); paid Google AI subscriptions give higher limits; check the official site for prices
Supports more than 80 languages, including English, Simplified Chinese and Traditional Chinese
Data and privacy
Needs a Google account and age verification; under-18s get stricter content rules, and some features are for adults only. With a school-managed Google account (Workspace for Education) there is no age limit, if your school has turned it on. Google says your data isn't used for training unless you submit feedback (Google may review the related conversation when you do). Mainland China and Hong Kong are currently not on the list of supported regions; there, use an AI tool that works locally and that your school allows, paste in your own notes, and have it quiz you first, then correct you. Only upload materials you have the right to use; never upload transcripts, ID documents or assignments with your name or student number.