Is NotebookLM Free in 2026? Limits, Paid Tiers and the Gemini Notebook Rename
Short answer: yes. The free plan lets you keep 100 notebooks, each with a source cap. Google renamed NotebookLM to Gemini Notebook on July 16, 2026, so the same free plan now sits under that name. The cap that decides most cases is the 50-source limit per notebook, and the paid tiers exist mainly to raise it.
Toolradar data: Toolradar evaluated 120 AI research tools for its ranking, and 6 of the 10 picks have a free plan. Free tiers are common in this category, so the caps, not the price tag, separate one tool from another. Toolradar's AI research ranking, updated October 24, 2026.
What the free plan includes
Google's plans page lists the free tier as Gemini Notebook for personal projects, beside three paid tiers. Google's plans page and its usage-limits help article set the caps below.
| What you get | Free | Google AI Plus | Google AI Pro | Google AI Ultra |
|---|---|---|---|---|
| Notebooks per account | 100 | 200 | 500 | 500 |
| Sources per notebook | 50 | 100 | 300 | 500 or 600 |
| Usage limits | Standard | Double the standard limits | Four times the standard limits | 5 to 20 times the Pro limits |
| Gemini model access | Access to Google's Gemini models | Access to Google's Gemini models | Higher access | Highest access |
| Feature access | Standard | Early access | Priority access | Priority access |
Google's help center puts the Ultra source cap at 500 on the 20 TB plan and 600 on the 30 TB plan. It labels its usage limits as subject to change, so read the multipliers as current, not fixed.
The free cap is enough for one course, one client file or one book. It is not enough for a literature review that runs past it, and that is where the upgrade math starts. Plus doubles the source cap to 100 and the notebook count to 200. Pro gives a single notebook 300 sources, and Ultra is built for the heaviest users, with up to 600.
Plan around the source and notebook caps first. Usage is the softer limit. Chats, audio overviews and slides have no published per-plan number, so you cannot budget generation the way you can budget sources. If you hit a generation limit on the free plan, the usage multiplier on Plus is the lever Google gives you.
How far the free caps stretch
The free plan allows 100 notebooks, and each one carries its own source cap. A large project split across several notebooks therefore gets more room than one notebook can hold. A research project with 120 papers, for example, fits in three notebooks of 40 papers each without a paid plan.
That split has a cost. A question that needs sources from two notebooks has to be asked of one of them, or you merge the sources back together and hit the cap again. Split the work by question, not by file type, and the free plan goes further than most people expect. When the splitting costs you more time than a subscription, upgrade.
What the free plan leaves out
Three gaps matter. Two are firm rules, and one is a rollout the free plan is not on. Training on your data is not one of them.
Public sharing. Google says public sharing is only enabled for consumer accounts. A work or school account cannot publish a public notebook. Google pitches public notebooks for customer support answers, but that route is closed to work and school accounts.
Team and school deployments. Google sells Gemini Notebook to organizations and schools through Google Workspace, Google Workspace for Education and Google Cloud. Those routes are separate from the personal plans, with their own admin setup.
The cloud computer. Google said on July 16, 2026 that every notebook gets a secure cloud computer. The feature was available then to AI Ultra and Workspace Business customers, with Pro web users to follow over the coming weeks. The free plan is not on that rollout list.
Training on your data is not a difference. Google says that as an individual your data is not used for training unless you send feedback, and its plan comparison gives the same Data Handling line across its personal plans. Organization data stays private to the organization.
What the paid tiers cost
Google AI Plus, Pro and Ultra are sold through Google's own plans page, and Google says those plans are only available in specific regions. On the monthly view of Google One's plans page, Google AI Plus is $9.99 a month and Google AI Pro is $19.99 a month in the US. Prices differ by country, so check Google's page for yours before you buy.
For a comparison with another AI subscription, Claude Pro is $20 a month billed monthly, or $17 a month billed annually, which comes to $200 up front, according to Anthropic's pricing page as of October 2026. Claude is a general assistant rather than a notebook that answers from your own sources, so treat that comparison as a price check, not a feature match.
Who should pay and who should skip
Stay on the free plan if your work fits in 100 notebooks and no notebook outgrows its cap. That covers most students with one course, most freelancers with one client file at a time, and most people who use the tool as a reading companion for a book or a report.
Pay for Plus once one notebook outgrows the free cap and splitting it has started to cost you time. Plus is the cheapest step that lifts the source cap, and it doubles the notebook count too. Pay for Pro only if one notebook must hold 300 sources, or you need the four-times usage multiplier and priority access. Ultra is for the largest notebooks and the heaviest generation work. Most readers will never need it.
Skip the personal tiers if you are buying for a team. Teams and schools buy through Workspace or Google Cloud, which is a separate route from the personal plans.
What users say, and what the rename changed
Users rate the app highly. The Gemini Notebook listing on the App Store, sold by Google LLC, is free with in-app purchases. It averages 4.9 out of 5 from about 64,000 ratings, and its latest version (1.64.1) is dated October 23, 2026. App Store listing
A rating that high says the app works for most people. It says nothing about whether the source cap fits your project, and that is the question that picks the plan.
9to5Google covered the rename on July 16, 2026, and said the new name is friendlier than "language model" and ties the product more explicitly to the Gemini brand. 9to5Google's rename story Google's own announcement says the product "remains a standalone product focused on being your premier research tool." Google's rename post
Google's plans page answers the naming question directly: NotebookLM is now Gemini Notebook as of July 2026, and existing notebooks remain fully accessible. Gemini Notebook plans
Closest alternatives if the caps block you
If the source cap is the blocker and you want to stay free, compare the tools on Toolradar's AI research ranking, where six of the ten picks have a free plan. Our best free AI research assistants guide covers the free tiers across the category, and best free AI note-taking apps is the better shortlist if you mainly need notes rather than answers grounded in your sources.
Frequently asked questions
Is NotebookLM free in 2026?
Yes. The free plan, now sold as Gemini Notebook, allows 100 notebooks, each with a source cap. Google labels its usage limits as subject to change.
How many sources can a free notebook hold?
Up to 50. Google AI Plus raises that to 100, Google AI Pro to 300, and Google AI Ultra to 500 or 600, according to Google's plans page and usage-limits help article.
Is NotebookLM the same product as Gemini Notebook?
Yes. Google renamed the product on July 16, 2026, and its plans page says existing notebooks remain fully accessible.
How much does Google AI Plus cost?
The paid tiers are sold by region, so the price depends on your country. Check the current price on Google's site for yours before you buy.
Can I share a free notebook publicly?
Public sharing is only enabled for consumer accounts, so a work or school account cannot publish one. Google lists advanced sharing as a paid-user feature, and its plans page does not say whether public notebooks are included on the free plan.
How much does Claude Pro cost by comparison?
Claude Pro is $20 a month billed monthly, or $17 a month billed annually ($200 up front), according to Anthropic's pricing page as of October 2026.
Does Google train its models on notebook data?
Not for individuals, unless you send feedback, according to Google's plans page. Organization data stays private to the organization.
Cite this: Dupple, "Is NotebookLM Free in 2026? Limits and Paid Tiers", October 2026.
The free plan covers one project inside its source cap. Pay only when one notebook outgrows that cap. Try Dupple X →
Sources: Gemini Notebook plans, usage-limits help article, Google AI plans, Google's rename post, Claude pricing, App Store listing, 9to5Google and Toolradar's AI research ranking.
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