Minute Verdict
NotebookLM is Google’s research tool that answers only from the documents you give it, and it now ships as Gemini Notebook at notebook.google.com. Upload PDFs, Google Docs, websites or YouTube links, then ask a question and get an answer tied to the passage it came from. The Studio panel turns the same sources into Audio Overviews, Video Overviews, slide decks and mind maps.
The product is free with a Google account. More notebooks and more Audio Overviews come with Google AI Plus at $4.99 a month, then Google AI Pro at $19.99, then Google AI Ultra from $99.99.
Pay for Plus when a daily reading habit runs past the free caps. Stay free if you work through a few PDFs a month, because the free plan carries the same grounding behaviour and the paid tiers sell volume rather than a different answer.
Best for: students and analysts who work from a fixed set of papers, lecture notes and reports.
Not for: anyone who wants an answer the sources do not contain, since the tool returns nothing in that case.
From: $0 a month, paid limits from $4.99, checked November 2, 2026
What NotebookLM does
NotebookLM is a closed-book assistant in the literal sense: it reads only what you put in the notebook. Each source is parsed, indexed and then cited. Ask a question and the answer arrives with a pointer to the document and the passage, which is the difference between a summary you can check and a paragraph you have to trust.
The name changed under the hood. As of November 2, 2026, notebooklm.google.com redirects to notebook.google.com, and the page there titles the product Gemini Notebook. The help centre moved with it, from support.google.com/notebooklm to support.google.com/gemininotebook, and the old address still forwards. The workflow, the upload path and the Studio outputs are the same; the label on the tab is not.
Sources take PDFs, Google Docs, websites and YouTube links, with a ceiling of 500,000 words per source or 200 MB for a local upload, and no page limit. Every source in the notebook is used by default, or the subset you tick in the source selector. Notes work differently: a note enters the prompt only when you select it. That distinction matters over months of work, because an unselected note is invisible to the answer.
The Studio panel is where the product earns its place. Audio Overviews turn a source set into a two-voice conversation you can download and listen to offline, Video Overviews and slide decks turn the same material into something presentable, and mind maps show how the sources connect. The mobile app carries the core of this, with a Chat panel for questions, a Studio panel for the generated artifacts, and a share sheet that pushes a website, a PDF or a YouTube video straight into a notebook.
On this page
What you get for the money
| Plan | Price | What it opens in NotebookLM | The limit that matters |
|---|---|---|---|
| Free | $0 a month | The research and writing assistant, with Audio Overviews and notebooks | No published count for either |
| Google AI Plus | $4.99 a month | More Audio Overviews, more notebooks, 400 GB of storage | Google sells the step as more, not as a number |
| Google AI Pro | $19.99 a month | 5x more Audio Overviews and notebooks than Free, 5 TB of storage | The multiplier has no baseline on the plan page |
| Google AI Ultra | $99.99 a month, $199.99 for the 20x tier | Highest limits and the best model capabilities in NotebookLM | The rest of the tier is storage, Flow credits and Gemini usage |
Two things follow from that grid. The first is that there is no NotebookLM subscription: paid limits arrive inside a Google AI plan, so a buyer who wants more notebooks is buying the whole Gemini bundle, storage included. The second is that every paid plan is monthly, with no annual rate published, so there is no yearly discount to weigh against the monthly figure.
Google also sells the Notebook steps as multipliers rather than counts: 5x more Audio Overviews and notebooks on Pro, highest limits on Ultra, and never a baseline figure. A buyer can tell that Pro is bigger than Free and cannot tell how many notebooks that buys, which is the one number a heavy user needs before paying.
Where it falls short
- The plan limits are multipliers without a baseline. Pro gives 5x more Audio Overviews and notebooks than Free, and nobody publishes what Free gives.
- There is no NotebookLM-only plan and no annual billing. The cheapest way to raise the limits is $4.99 for the whole Google AI Plus bundle.
- A deleted note cannot be recovered, and a notebook cannot be duplicated, so a mistake in a long research project costs the set-up time again.
- Citations thin out on short sources: when a document is too short, the answer points at the whole file instead of a passage.
- Ultra starts at $99.99, and the extra spend goes to storage, Flow credits and Gemini usage rather than to research features.
NotebookLM alternatives
None of the three below grounds an answer in a source set the way this tool does. They are the names a buyer checks before paying for the Google AI bundle.
- Perplexity, free with cited answers and $17 a month billed yearly for Pro: it searches the open web rather than your folder, which is the right pick when the question is about the world and the wrong one when it is about your documents. Our Perplexity review.
- Fireflies.ai, $18 a seat a month: it records meetings and turns the transcript into notes and summaries, so it covers the audio side without asking you to upload anything first. Our Fireflies.ai review.
- Grok, $8 a month on Plus: a general assistant with a low entry price, useful when you want a second model on the same document rather than a second notebook. Our Grok review.
For study workflows built on lecture material, our Mindgrasp review covers the flashcard route, and the AI tools directory lists the rest by category.
Who it is for: NotebookLM
Buy it for the person who already has the documents. A master’s student with forty papers, a consultant with a folder of client reports, a writer checking claims against a book: the work starts with a pile of files that must be read closely, and the tool turns that pile into answers with receipts. The Audio Overview is the sleeper feature in that group, because a two-voice summary of six papers is listenable on a commute and a 300 page PDF is not.
Skip the paid tiers if your reading is occasional. The free plan carries the same grounding, the same citation behaviour and the same Studio outputs, and the only difference at $4.99 is how much of it you can run in a month. Skip the product entirely if the question is open-ended, because a notebook that returns nothing when the answer is absent is honest and useless at the same time, and a web-connected assistant answers that kind of question better.
How we checked
We read the Google AI plan page, the Gemini Notebook help centre, the mobile app guide and the product home on November 2, 2026, and we did not run our own document set through the tool. Every price and every limit on this page comes from those sources, and the Notebook quotas we could not find as a figure are described as multipliers instead of being estimated. This is a research review, and it becomes a hands-on review once we have tested a fixed set of PDFs against a set of questions with known answers.
What to do next
Open a notebook with the three documents you know best and ask it something whose answer you can check on the page. If the citations land where you expect, stay on the free plan until the notebook or Audio Overview cap stops you, then take Google AI Plus at $4.99 rather than Pro at $19.99, since the first step is the one that lifts the ceiling you actually hit. Keep our guide to AI plans open when you compare the bundle against a single-purpose tool.
FAQ
Is NotebookLM free?
Yes. The research and writing assistant works on a free Google account, and the planned step up is Google AI Plus at $4.99 a month for more Audio Overviews and more notebooks.
Is NotebookLM still called NotebookLM?
The product now ships as Gemini Notebook. As of November 2, 2026, notebooklm.google.com redirects to notebook.google.com, which titles the page Gemini Notebook, and the help centre sits at support.google.com/gemininotebook.
How much does NotebookLM cost?
Nothing on the free plan. Google AI Plus costs $4.99 a month, Google AI Pro $19.99, and Google AI Ultra starts at $99.99 for the 5x tier or $199.99 for the 20x tier. All are monthly, with no annual price published.
How many sources can I put in a notebook?
One source can hold 500,000 words or a 200 MB local upload, with no page limit. Google does not publish a source count per notebook, and sells the paid steps as 5x more notebooks rather than as a number.
Does Google train on my notebooks?
No. Google states that uploads, queries and the model’s responses are not used to train AI models and are not reviewed by human reviewers, including when you send thumbs up or down feedback.
Does NotebookLM have a mobile app?
Yes, an early version with core features. Google documents it for Android 10 and up, with a Chat panel, a Studio panel and a share sheet for websites, PDFs and YouTube videos, and says it is rolling out gradually by country and language.
Sources
Sources
- https://gemini.google/us/subscriptions/?hl=en (checked November 2, 2026)
- https://support.google.com/gemininotebook/answer/16269187?hl=en&gl=US (checked November 2, 2026)
- https://support.google.com/gemininotebook/answer/16296687?hl=en&gl=US (checked November 2, 2026)
- https://notebook.google.com/ (checked November 2, 2026)
Update log
Published November 2, 2026. Prices and plan wording checked November 2, 2026 on the US Google AI plan page.
