NotebookLM is Google's AI research and note-taking tool that grounds answers, summaries, and audio overviews in your own uploaded sources. It grounds all output in your uploaded corpus with citations and pioneered podcast-style audio overviews, making it a personalized research assistant rather than an open-web search tool.
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.
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.
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.
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.
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.
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