Short answer: Gemini Notebook, the product Google launched as NotebookLM, has a free tier and two paid tiers. You do not buy it on its own. Plus and Pro arrive bundled with a Google AI subscription or with a qualifying Google Workspace edition, and what you are really paying for is a higher usage ceiling, not extra features.
That is the part most pricing pages skip, so it is worth stating first: there is no line item called "NotebookLM Plus, $X a month." The tier rides along with a broader Google plan you may already have, and the number that decides whether you need to upgrade is not a price, it is how much you use it.
Why you may not find NotebookLM pricing anymore
The product was renamed. As of July 2026, NotebookLM is Gemini Notebook. It is the same tool, existing notebooks stayed accessible, and Google's own help pages and Workspace comparison tables now use the new name. If you searched for NotebookLM pricing and landed on a page about Gemini Notebook, you are in the right place. Most third-party articles still use the old name because that is what people type.
NotebookLM free vs Plus vs Pro: the limits that decide your bill
Google publishes the caps per tier. These are the numbers to check against your own usage before you pay for anything.
| Limit | Free (Standard) | Plus | Pro |
|---|---|---|---|
| Notebooks per user | 100 | 200 | 500 |
| Sources per notebook | 50 | 100 | 300 |
| Chat queries per day | 50 | 200 | 500 |
| Audio overviews per day | 3 | 6 | 20 |
Read that table as a ladder of volume, not of capability. The free tier already does the thing the product is famous for: you upload sources, you ask questions, you get answers with inline references back to the source. Paying moves the ceiling. It does not unlock a different tool.
The cap that bites first for professional work is 50 sources per notebook on the free tier. A single client engagement with a year of reports, contracts and transcripts passes 50 files without trying. The usual workaround is splitting one project across several notebooks, which works right up to the moment you need a question answered across all of them at once.
What changed on September 2, 2026
Google replaced the simple daily counts with a compute-based quota. Instead of a flat number of chats in a 24 hour window, usage is now weighed by the complexity of your prompt, which models and features you use, and how long the chat has run. Quotas refresh on a five hour cycle, with a weekly limit on top, and each plan scales that allowance.
Practically, this means two people on the same tier can hit the wall at very different points. Short factual questions over a handful of sources go a long way. Long analytical chats over a large notebook, with audio generation mixed in, burn through the allowance much faster. If you are budgeting for a team, the honest answer is that you cannot forecast this from a price list. You have to run a real week of work and watch where it lands.
How to actually get NotebookLM Plus or Pro
Two routes, and which one applies depends on whether you are buying as a person or as a company.
Google AI subscriptions. The consumer path. Google AI Plus and Google AI Pro carry the upgraded Notebook tiers alongside everything else in the Gemini app, with Google AI Pro listed at $19.99 a month in the US. Above them, Google announced at I/O 2026 that AI Ultra now has an entry tier at $100 a month and that it cut the price of the top Ultra plan from $250 to $200 a month. Those top tiers exist for people who want the highest usage limits across Google's whole AI lineup, not for Notebook alone.
Google Workspace. The business path. Gemini Notebook appears in the Workspace comparison table as the AI research partner, with expanded access on Business Standard, Business Plus and Enterprise. If your company already pays for Workspace at one of those editions, you may have the upgraded tier without buying anything. Check before you expense a personal subscription.
Is NotebookLM safe for business use?
Inside Google Workspace, yes, with the caveat that matters: Google states that for Workspace customers the sources, queries and responses stay within the organization and are not used to train its models. That is an enterprise data protection commitment attached to the Workspace agreement, not to a personal Google account.
If you are uploading client material while signed in with a personal Gmail address, you are on consumer terms, and that is the distinction a compliance review will ask about first. The practical rule for consultants and anyone handling material under an NDA is simple: know which account the notebook belongs to before the file goes in.
When NotebookLM pricing stops making sense
Three patterns push people to pay for something else instead.
The first is the source ceiling. If your real archive is 300 documents and growing, a per-notebook cap forces you to shard your own knowledge, and the answers get worse in exactly the way that matters, because the file with the answer is in the other notebook.
The second is the bundle. Paying $19.99 a month for a broad AI subscription is good value if you use the rest of it. If Notebook is the only part you open, you are funding a suite to get a research tool.
The third is what the tool is for. Gemini Notebook is built around a notebook: a project, a set of sources, a burst of work. A lot of professional questions are not project shaped. They are archive shaped, as in "what did we say about this two years ago," and they want one permanent library rather than a new notebook each time.
| Tool | Price (US) | What it reads | Best for |
|---|---|---|---|
| Gemini Notebook (NotebookLM) | Free tier. Plus and Pro bundled with Google AI plans or qualifying Workspace editions. | Documents, slides, PDFs, web pages, video and audio, per notebook | Project-shaped research, and audio overviews nothing else matches |
| Humata | Free 60 pages a month. Expert $9.99 a month for 500 pages. Team $49 per user for 5,000 pages. | PDFs, priced by page | Predictable per-page costs on a defined batch of documents |
| Claude Pro | $20 a month, less on annual billing | Files you attach to a conversation | Reasoning over material you paste in, rather than a stored library |
| MentalClone | 79 PLN a month (about $21) or 474 PLN a year (about $11 a month). Professional 199 PLN (about $54). | PDF, Word, Excel, text and photographed pages you upload once | A permanent archive you question, with answers restricted to your files |
Prices come from each vendor's own pricing page. Google's Plus and Pro tiers are deliberately left without a standalone figure in that table, because Google does not sell them standalone.
The honest case for Gemini Notebook: audio overviews are genuinely good and nobody else does them as well, the free tier is unusually generous, and the inline citations back to your sources are excellent. If those are what you need, the free tier may be all you ever buy.
The case against, for the specific reader who keeps hitting the ceiling: a tool built around a permanent document library handles the archive question better. That is the gap a document chat tool fills, and it is the same reason people end up comparing NotebookLM alternatives after a few months rather than on day one. Worth noting the boundary too: none of these are analytics tools, so if the questions you need answered are really about rows in a database or a spreadsheet, a system that turns plain-English questions into SQL answers them properly and a document reader never will.
Questions people ask about NotebookLM pricing
How much does NotebookLM cost?
NotebookLM, now Gemini Notebook, is free to use at its Standard tier. The Plus and Pro tiers are not sold separately: they come with a Google AI subscription, with Google AI Pro listed at $19.99 a month in the US, or with a qualifying Google Workspace edition. There is no standalone Notebook price.
Is NotebookLM free?
Yes. The free tier gives you 100 notebooks, 50 sources per notebook, 50 chat queries a day and 3 audio overviews a day, with the same core features as the paid tiers. Since September 2, 2026 those daily counts sit inside a compute-based quota that also weighs prompt complexity and chat length.
What is the difference between NotebookLM and NotebookLM Plus?
Volume, not features. Plus raises the caps to 200 notebooks, 100 sources per notebook, 200 chat queries a day and 6 audio overviews a day. Pro goes further, to 500 notebooks, 300 sources and 500 chats a day. The tools inside the notebook are the same at every tier.
How many sources can NotebookLM handle?
50 sources per notebook on the free tier, 100 on Plus and 300 on Pro. This is usually the first limit professionals hit, because one real client engagement can pass 50 files on its own. Splitting a project across notebooks works until you need an answer that spans all of them.
Is NotebookLM included in Google Workspace?
Gemini Notebook appears in the Workspace plan comparison as the AI research partner, with expanded access on Business Standard, Business Plus and Enterprise. If your company is already on one of those editions, check what you have before buying a personal AI subscription for the same thing.
Is NotebookLM safe for confidential documents?
For Workspace customers, Google states that sources, queries and responses stay within the organization under its enterprise data protection terms. A personal Google account is on consumer terms instead, which is the distinction that matters for client material under an NDA. Confirm which account owns the notebook before uploading.
What is the best paid alternative to NotebookLM?
It depends on the shape of your work. Humata prices by page and suits a defined batch of PDFs. Claude Pro at $20 a month is stronger at reasoning over material you paste in. If you need a permanent library you question for years rather than a notebook per project, a document-first tool like MentalClone reads PDF, Word, Excel and photographed pages, keeps answers restricted to your uploads, and starts at about $11 a month billed yearly.
If you want to test that difference in about a minute, paste a page from a report you actually work with into the box at the top of this article and ask it the question you would normally go digging for. Comparing what a second brain built on your own documents returns against what a fresh notebook returns is a faster way to decide than any pricing table.