NotebookLM is an AI research and note tool made by Google. Users upload their own sources, such as PDFs, Google Docs, websites and YouTube videos, and the tool answers questions using only those sources. Each answer links back to the passage it came from. Google first showed it as Project Tailwind in May 2023.
Audio Overviews turn a set of sources into a spoken conversation between two AI hosts, which became widely shared in 2024. The tool can also create study guides, briefing documents, mind maps, flashcards and video overviews. It runs on Google's Gemini models. Answers stay grounded in the uploaded material, which reduces made-up facts. Audio Overviews are available in many languages and can be customised before they are generated.
NotebookLM is free with limits on notebooks and sources. Higher limits come with Google AI subscription plans, and businesses and schools can use it through Google Workspace. Students, researchers, writers and analysts use it to study material and prepare reports.