Use NotebookLM, which Google now calls Gemini Notebook, when you want answers drawn only from documents you add, such as reports, notes or recordings. Use the Gemini app when you want a general assistant that writes, researches the web, makes images and video and connects to your Google apps. Both are free to start and both come with Google AI plans.
They're both Google products built on Gemini models, so the overlap confuses a lot of people. The simplest way to think about it: Gemini Notebook works inside a notebook of sources you choose, while the Gemini app works across the web and your connected apps. Here's how they compare on Google's own help pages, checked as of October 2026.
NotebookLM and Gemini side by side
| Gemini Notebook (NotebookLM) | Gemini app | |
|---|---|---|
| What it's for | Research and writing from your own sources | An all-round personal assistant |
| Where answers come from | The sources in your notebook | The model, the web and your connected apps |
| Free plan size | 100 notebooks, 50 sources each | Standard limits, 32k token context window |
| On Google AI Pro | 500 notebooks, 300 sources each | 4x standard limits, 1 million token context window |
| Built-in outputs | Reports, flashcards, infographics, slide decks, audio and video overviews | Canvas, Deep Research, images, video on paid plans |
| Limit refresh | Every five hours, up to a weekly cap | Every five hours, up to a weekly cap |
How the limits compare on each plan
Google's Gemini Notebook plan table shows how much room you get as you upgrade:
| Plan | Notebooks | Sources per notebook |
|---|---|---|
| Standard (free) | 100 | 50 |
| Plus | 200 | 100 |
| Pro | 500 | 300 |
| Ultra (20 TB plan) | 500 | 500 |
| Ultra (30 TB plan) | 500 | 600 |
AI usage then follows the same pattern as the Gemini app: Plus gets twice the standard limit, Pro four times and Ultra five or 20 times Pro. One handy detail from Google: if sources you add trigger an automatic report, flashcards or overview, those are generated once and don't count against your limits.
When Gemini Notebook is the better choice
- You need answers you can trace back to a specific document, such as a policy, contract or research pack.
- You want to turn a pile of material into a study guide, flashcards, a slide deck or an audio overview.
- You're sharing a research notebook with a colleague. Google says sharing doesn't change the source limit for anyone.
- You want answers grounded in the sources you've chosen, with citations back to them.
When the Gemini app is the better choice
- You want to write, brainstorm or plan from scratch, with no sources to hand.
- You need current information from the web, or a Deep Research report across many sites.
- You want images, video or music, or a tool that works inside Gmail and Docs.
- You'd like recurring help, such as scheduled actions or a daily brief, on a paid plan.
Which plan covers both
You don't buy them separately. Google's plan page lists Gemini Notebook on the free plan, more Audio Overviews and notebooks on Google AI Plus, five times more on Google AI Pro, and the highest limits and best model capabilities on Ultra. Early access to new Gemini Notebook features also climbs with the plan: Standard on free, Early on Plus and Priority on Pro and Ultra.
A few quota details from Google's help page are worth knowing. If your plan is on daily quotas, they reset after 24 hours, and monthly quotas reset after 30 days. To check you're on an upgraded plan, look for a badge next to your profile picture in Gemini Notebook. And on the Gemini side, Google says the 1 million token window on Pro and Ultra reads up to 1,500 pages of text at once, which is plenty for a single long report but not a whole library of sources.
Using them together
This is how I'd do it for a small business. Use Gemini to research a topic and pull together a long report. Add that report, plus your own notes and a couple of client documents, to a Gemini Notebook. Then ask the notebook questions you can trust, because every answer points back to a source. For example:
Copy this prompt
Using only these sources, list the three objections customers raise most often and quote where each one appears.
The order matters. Start in Gemini when you don't yet know what you're looking for, and move to Gemini Notebook once you've gathered the material and need answers you can stand behind in front of a client.
Curious about Google's more experimental tools? See how to use Project Genie.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
Privacy differences worth knowing
Google says your Gemini Notebook data isn't used to train the tool unless you give feedback, in which case it may review the full context of that interaction. On Google Workspace and Workspace for Education accounts, uploads, queries and responses aren't reviewed by humans even when you give a thumbs up or down, and aren't used to train AI models. Paid plans from Pro up can also turn off the visible watermark on generated images and videos, though Google says the watermark is applied automatically for people living in India, South Korea or Vietnam.
For a full walkthrough, read my guide on how to use NotebookLM, and if you're comparing it with OpenAI's tool, see NotebookLM vs ChatGPT.
My verdict
You don't have to choose. Gemini is the tool you think out loud with; Gemini Notebook is the tool you check facts against. If you only use one, pick the Gemini app for everyday work and open Gemini Notebook whenever accuracy against your own documents matters more than speed.
The Gemini app has more to offer than answers, such as Gemini's daily brief.
Frequently asked questions
Is NotebookLM part of Gemini?
Google now calls NotebookLM Gemini Notebook, and its higher limits come with Google AI plans alongside the Gemini app.
Is NotebookLM better than Gemini for research?
For research from your own documents, yes. For research across the web, Gemini's Deep Research is the better fit.
How many sources can a NotebookLM notebook have?
Google lists 50 on the free plan, 100 on Plus, 300 on Pro and 500 or 600 on Ultra.
Do NotebookLM and Gemini share usage limits?
Each has its own limits, but both refresh every five hours up to a weekly cap and scale the same way by plan.
Is NotebookLM free?
Yes. Google says you can sign up free of charge with your Gmail account.
