Best for: Researchers and students working through a defined set of documents
The best tool in this directory for working through a fixed set of documents, and the free tier covers most people entirely. Treat it as a research notebook rather than an assistant: outside your own sources it does nothing.
- Who it's forIndividuals, Students, Freelancers
- Not ideal forGeneral questions that need the open web rather than your own sources
- Price from$4.99/mo · free plan
- In category#1 of 4 in Research · category median $12.495000000000001/mo
What is NotebookLM?
NotebookLM inverts how an assistant usually works. Instead of answering from the whole web, it answers only from the sources you put in the notebook: PDFs, web pages, YouTube videos, audio files, Google Docs and Slides.
Every response carries citations that point at the exact passage, so verifying a claim takes one click rather than a separate search. That constraint is the product.
It cannot wander off into invented context because it has nowhere to wander to, which is why researchers, students and analysts use it on material they cannot afford to have paraphrased loosely.
Audio Overview is the feature that made it famous: one click turns a pile of sources into a two-host discussion you can listen to, which turns dense reading into something you can do while walking.
google address and the original name are what people still search for. The free tier allows up to 50 sources per notebook.
Google AI Plus doubles the generation limits and allows 100 sources, Pro gives five times the generations and 300 sources, and Ultra raises generation limits up to fiftyfold.
Made by GoogleMountain View, USAFounded 1998Launched Jul 2023
NotebookLM key features
Grounded in your sources only
Answers come from the documents in the notebook and nowhere else, which removes the usual risk of invented context.
Citations to the exact passage
Every claim links to the quote it came from, so checking a figure takes one click instead of a separate search.
Audio Overview
Turns a set of sources into a two-host spoken discussion you can listen to instead of reading.
Mixed source types
PDFs, web pages, YouTube videos, audio files, Google Docs and Slides in the same notebook, with questions spanning all of them.
Study and briefing outputs
Generates study guides, briefing documents, timelines and FAQ sets from the material rather than a flat summary.
Notebook sharing
Share a notebook so a team asks questions of the same source set rather than passing files around.
NotebookLM pricing and plans
Free
Free
- Standard Audio and Video Overview generations
- Up to 50 sources per notebook
- Access to Google Gemini models
Included with Google AI Plus
$4.99/month
- 2x the standard generation limits
- Up to 100 sources per notebook
- Early access to new features
Included with Google AI Pro
$19.99/month
- 5x the standard generation limits
- Up to 300 sources per notebook
- Higher Gemini model access
- Priority access
Included with Google AI Ultra
$99.99/month
- Up to 50x the standard generation limits
- Highest Gemini model access
- Priority access at peak times
Pricing checked on August 26, 2026.See NotebookLM's pricing page
NotebookLM pros and cons
Pros
- Answers only from your sources, with citations to the exact passage
- Reads PDFs, web pages, YouTube and audio in one notebook
- Audio Overview turns dense reading into something you can listen to
- Uploads are excluded from model training
Cons
- No API, so nothing here can be automated
- Useless for questions that need the open web
- Higher limits require a Google AI subscription rather than a plan of its own
NotebookLM platforms, API and integrations
API not available
No public API. Automate through the integrations below or the web app only.
4 integrations
- Google Drive
- Google Docs
- Google Slides
- YouTube
10 languages
English, French, German, Spanish, Italian, Portuguese, Japanese, Korean, Chinese, Hindi
Inputs and outputs
Accepts Text, PDF, URL, Audio, VideoProduces Text, Audio, Video
2 AI models
Gemini 3 Pro, Gemini 3.6 Flash
Is NotebookLM secure? Privacy, compliance and support
Data privacy
- Does not train on user data
- Retention: Google states uploaded sources and notebook conversations are not used to train its models; Workspace accounts are covered by their existing terms
- Data region: Global
Compliance
- SOC 2
- GDPR
- ISO 27001
Team features
- SSO: yes
- Team workspace: yes
Support channels
- Documentation
- Community
Who is NotebookLM best for?
Researchers and students working through a defined set of documents. NotebookLM targets individuals, students, freelancers, small and mid-size businesses, enterprises.
Use cases
Categories
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NotebookLM FAQ
Is NotebookLM free?
Yes, with standard generation limits and up to 50 sources per notebook. Higher limits come bundled with the Google AI Plus, Pro and Ultra subscriptions rather than being sold separately.
Is NotebookLM the same as Gemini Notebook?
Yes. Google renamed the product Gemini Notebook, and it still lives at notebooklm.google. The features, the notebooks and the free tier are unchanged.
What sources can NotebookLM read?
PDFs, web pages, YouTube videos, audio files, Google Docs and Google Slides, mixed in the same notebook, with questions that span all of them.
What is an Audio Overview?
A generated spoken discussion between two hosts covering your sources, produced in one click. It turns a set of documents into something you can listen to.
Does NotebookLM use my documents to train Google models?
Google states uploaded sources and notebook conversations are excluded from model training, which is the reason it is usable on unpublished work.
Does NotebookLM have an API?
No. There is no public API, so it cannot be scripted or embedded. For programmatic work the Gemini API is the route Google points to instead.
How much does NotebookLM cost?
NotebookLM paid plans start at $4.99/mo (Included with Google AI Plus). A free plan is available. Prices checked on August 26, 2026.