Google's research notebook: upload PDFs and docs, ask questions grounded in your sources
NotebookLM is Google's research notebook. Upload sources — PDFs, Google Docs, slides, links, videos — and work with them as a knowledge base: ask questions and get answers grounded strictly in your materials, with citations pointing to the exact passage.
Best for students and researchers digesting papers, lawyers and analysts working with contracts and reports, and anyone tired of hunting facts across a folder of PDFs. Free tier available.
No — that's the point: answers are grounded only in the sources you upload, so hallucinations are rare and every fact is verifiable via its citation.
PDF, Google Docs and Slides, text files, web links and YouTube videos.
The base version is free. Higher limits come with Google One / Workspace plans.