NotebookLM is Google's free AI research and note-taking tool. You upload your own sources - PDFs, Google Docs, web pages, YouTube videos - and it answers questions using only that material, with citations back to the exact passage. Because it is grounded in your documents rather than the whole internet, it makes up far less than a general chatbot. It can also turn your sources into summaries, study guides, mind maps and even a podcast-style audio overview. This guide explains what it does and how to use it, step by step.
What is NotebookLM?
Think of NotebookLM as a smart reading assistant that only knows what you give it. You create a "notebook," add up to a few dozen sources, and then ask questions. Every answer points back to where it came from, so you can click through and check. That one design choice - answers limited to your sources - is why researchers, students and writers trust it for work where a confident-but-wrong answer is a real problem.
It is a Google Labs product and the core version is free with a Google account. Paid tiers raise the limits and unlock extras, but most people can do serious work on the free plan.
What can you put into it?
A notebook accepts a wide mix of material: PDFs, Google Docs, Slides and Sheets, plain text, websites, YouTube video transcripts and audio files. You can mix formats in one notebook - lecture slides, a couple of papers and a webinar recording together - and ask questions across all of them at once.
How to use NotebookLM: step by step
- Sign in. Go to notebooklm.google.com and sign in with a Google account.
- Create a notebook. Click to start a new notebook and give it a clear name - one notebook per project or topic works best.
- Add your sources. Upload files or paste links. Give it the real material, not a summary of it - the tool is only as good as what it can read.
- Read the auto-generated guide. NotebookLM creates an instant overview with a summary, key themes and suggested questions. This is the fastest way to see what is in a pile of documents you have not read yet.
- Ask questions in the chat. Ask for the main argument, a comparison between two sources, a timeline, or "what does this say about X." Click the citations to verify each claim.
- Generate study and sharing tools. Turn the sources into an audio overview (two AI hosts discussing your material), a mind map, flashcards, a briefing doc or slides - useful for revising or for sharing with a team.
- Export or share. Share the notebook, or download the outputs you created.
NotebookLM is brilliant at organising your sources. Aiden is the next step: hand Claude the same material and get a structured review, with claims weighed and the method shown - not just a tidy summary.
View Aiden →What is NotebookLM best for?
It shines whenever the job is "make sense of these specific documents":
- Students: turn lecture notes and readings into a study guide, then quiz yourself with the audio overview on the commute.
- Researchers: load a set of papers and ask for the shared findings, the disagreements and the gaps - with citations you can follow.
- Writers and creators: drop in interview transcripts and background docs, then pull quotes and themes without re-reading everything.
- Teams: make a single notebook the "ask-anything" layer over a policy, a contract or a product spec so colleagues stop pinging you with the same questions.
Where NotebookLM stops - and what to use instead
NotebookLM is deliberately narrow, and that is its strength and its ceiling. It will not reason far beyond your sources, it will not argue a position or make a recommendation the way a general model will, and the free plan caps how many notebooks and sources you can keep. It summarises and locates; it does not decide.
So the natural workflow is two tools, not one. Use NotebookLM to gather, ground and summarise. Then move to a reasoning model like Claude when you need the next step - a weighed judgement, a literature-review-style write-up, a recommendation with the trade-offs spelled out. A ready-made research skill such as Aiden gives Claude that method out of the box, and the free AI Study Guide Generator and AI Literature Review Assistant are a no-signup way to see the output first.
If you are weighing it against other AI research tools, our guide to using Perplexity AI for research covers the web-search side of the same problem.
NotebookLM FAQ
Is NotebookLM free?
Yes. The core version is free with a Google account and is enough for most people. Paid tiers raise the limits on notebooks, sources and audio, and unlock extras like video overviews, but you do not need them to start.
Is NotebookLM better than ChatGPT or Claude?
It is built for a different job. ChatGPT and Claude reason broadly across everything they know. NotebookLM answers only from the sources you give it, with citations, which makes it more trustworthy for document-grounded research and less useful for open-ended reasoning. Many people use both.
What files can NotebookLM read?
PDFs, Google Docs, Slides and Sheets, plain text, websites, YouTube video transcripts and audio files. You can combine different formats in one notebook and ask questions across all of them.
What is the NotebookLM audio overview?
It turns your sources into a podcast-style conversation between two AI hosts who discuss the material. It is a popular way to review notes hands-free, for example while commuting.
Does NotebookLM make things up?
Much less than a general chatbot, because it answers from your uploaded sources and cites them. It is not perfect, so you should still click the citations and check anything important.
A grounded summary is a start, not a finish. Aiden is a ready-made research-assistant role - it frames the question, compares sources, flags what is weak and writes it up. Install it into Claude and point it at your reading pile.
View Aiden →In short:
Use NotebookLM to ground your research in your own documents and turn them into study tools - it is free and it cites its work. When you need the judgement that a summary can't give you, hand the same sources to Claude with a ready-made role like Aiden, or browse the full skills catalogue.
