Gemini Notebook (formerly known as NotebookLM) is an AI-powered research and learning tool that helps users understand information using their own uploaded sources. The platform lets users add notes, documents, reports, and other materials, then ask questions and receive responses grounded in the provided content. Gemini Notebook can turn source material into formats such as Audio Overviews, Mind Maps, Reports, Flashcards, Quizzes, Video Overviews, Data Tables, Infographics, and Slide Decks. Users can also explore public notebooks on topics such as aging research, life advice, Shakespeare, and corporate earnings reports. The product emphasizes privacy, stating that organizational and school data stays private and is not used to train Gemini Notebook. Built for learning, research, productivity, and content understanding, Gemini Notebook helps users move from raw sources to summaries, insights, study materials, and structured outputs faster.