Is NotebookLM Free? The Free Plan Limits (2026)

The short version: yes, NotebookLM is free. Google lets you sign up for free with your Gmail account, and the free plan gives you up to 100 notebooks with up to 50 sources in each. Google's help centre now calls the tool Gemini Notebook, and upgrading through a Google AI plan raises those limits and adds advanced sharing.

NotebookLM is one of the most useful free AI tools around for anyone who works with lots of documents. You upload your sources, and it answers questions using those sources rather than the open web. The free version is generous, but the limits are worth knowing before you build your whole workflow on it.

What the free NotebookLM plan includes

Up to 100 notebooks per user.
Up to 50 sources in each notebook.
Access to Gemini models to answer questions about your sources.
Custom chat and analytics, which Google says are available to everyone.
Browser access for users above the age of consent in supported countries.

NotebookLM free vs upgraded plans

Limit	Free	Google AI Plus	Google AI Pro
Notebooks	100 for each user	200 for each user	500 for each user
Sources	50 per notebook	100 per notebook	300 per notebook
Advanced sharing	No	Yes	Yes
Feature access	Standard	Early	Priority

How NotebookLM's free limits work

Google says the limits are subject to change, so treat these as today's numbers rather than a promise. If your plan runs on daily quotas, they reset after 24 hours, and monthly quotas reset after 30 days.

Two details work in your favour. Sharing a notebook doesn't change the source limit for anyone you share it with. And when you first add sources, some users see a report, flashcards, an infographic, a slide deck or an audio or video overview created automatically. Google says these are generated once and don't count towards your limits.

On privacy, Google says your data isn't used to train Gemini Notebook unless you give feedback, and if you do give feedback it may review the full context of that interaction. If you use it through Google Workspace or Workspace for Education, your uploads, questions and answers aren't reviewed by human reviewers or used to train AI models.

The NotebookLM watermark catch

Here's the one that surprises people. Google says a visible watermark is applied automatically if you live in India, South Korea or Vietnam, and watermark removal is listed as a feature of the upgraded plans rather than the free one. If you're planning to share generated material with clients, check whether that applies to you first.

The other practical limit is the 50 sources per notebook. That sounds like a lot until you try to load a year of meeting notes or every blog post you've written. The fix is simple: split big projects into several notebooks by topic or by quarter.

How to start using NotebookLM for free

Go to NotebookLM in your browser and sign in with your Gmail account.
Create a notebook for one project or topic.
Add your sources, such as documents, notes or web pages, up to 50 per notebook.
Ask questions and check the answers against the sources it points to.
Start a new notebook when a project outgrows the source limit.

Learn the tool before you upgrade

If you're starting from scratch, my guide on how to use NotebookLM walks you through it, and these NotebookLM prompts will save you a lot of trial and error.

Who NotebookLM's free plan suits best

It's ideal if you research, write or teach from a set of documents. Think of a consultant pulling together client interviews, a student revising from lecture notes or a business owner turning a pile of old blog posts into a new guide. Because answers come from the sources you add, it's far easier to check than a general chatbot.

It's less suited to anything that needs live information from the web, because the whole point is that it works from your sources. If you need current news or live figures, use a general assistant for that part, then bring what you find into a notebook as a source.

Free NotebookLM through work or school

Google lists a separate route if you have a qualifying Google Workspace or Workspace for Education licence. That's worth checking before you upgrade on a personal account, because your employer or school may already give you access with stronger data protections, such as no human review of your uploads and answers.

Good habits that keep you inside the free limits

Give each notebook one clear job. A notebook for a single client, course or book stays well under the source limit and gives better answers, because NotebookLM isn't mixing unrelated material. When a project ends, leave its notebook alone and start a fresh one for the next.

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Name your sources clearly before you upload them, so you can see at a glance where an answer came from. And always click through to the source it cites before you quote anything, especially if you're sharing the result with a client or a teacher.

If you work in a team, remember that advanced sharing sits on the upgraded plans. You can still share notebooks on the free plan, but the extra sharing controls are a reason a business might upgrade even when nobody's near the notebook limit.

A final small tip: keep a running notebook of your own frequently used notes, such as your brand guidelines or service descriptions, so you can point NotebookLM at them whenever you start something new.

My verdict: NotebookLM's free plan is one of the best free deals in AI right now. Most people won't hit 100 notebooks, so the only real reasons to upgrade are bigger projects, advanced sharing or the watermark if you're in one of those three countries.

Frequently asked questions