NotebookLM
ResearchGoogle's source-grounded notebook — turn PDFs and docs into study guides, briefings, and audio overviews.
How to use NotebookLM
Create a notebook, upload sources like PDFs, docs, links, and videos, then ask questions or generate summaries that cite your sources rather than the open web. Generate audio and video overviews to turn material into narrated walkthroughs, and use deep research and slide decks for synthesis. The free tier is generous, and paid tiers raise limits and add sharing controls.
Best for
Grounded question-answering over your own documents with citations. Audio and video overviews that summarize your material. Deep research, slide decks, and study aids from uploaded content.
How it behaves
Answers are grounded strictly in your uploaded sources with inline citations, which reduces hallucination. The free tier includes core features with daily caps, and higher limits come through the Plus tier and Google AI bundles.
Tips
Upload your own sources so answers stay grounded and cited. Generate an audio overview to review material hands-free. Upgrade for higher source and audio limits.
Pricing
Free standard tier. Plus is about $8/mo standalone, and it is also bundled into Google AI Pro at about $20/mo and higher Ultra tiers.