KastorFlowUpdated October 25, 2026
NotebookLM pricing: what Gemini Notebook costs
NotebookLM costs nothing. Gemini Notebook is free with a Google account, with 100 notebooks of up to 50 sources each. There is no separate NotebookLM subscription: more sources, more notebooks and higher usage limits come with Google's AI plans, which also cover the Gemini app and Google storage. In the US those are Google AI Plus at $4.99 a month, Google AI Pro at $19.99 and Google AI Ultra at $99.99 or $199.99. Prices differ by country, and students can get a year of AI Pro or AI Plus free until December 31, 2026.
Gemini Notebook is NotebookLM's new name since July 2026. The prices and plans are the same under both names.
Plans and prices
| Plan | Price a month (US) | Sources per notebook | Notebooks | Usage | Also includes |
|---|---|---|---|---|---|
| Free (Standard) | $0 | 50 | 100 | Standard | The Gemini app's free tier |
| Google AI Plus | $4.99 | 100 | 200 | 2× standard | 400 GB of storage, Gemini app Plus features |
| Google AI Pro | $19.99 | 300 | 500 | 4× standard | 5 TB of storage, Gemini app Pro features |
| Google AI Ultra 5× | $99.99 | 500 | 500 | 5× AI Pro | 20 TB of storage, the highest model access |
| Google AI Ultra 20× | $199.99 | 600 | 500 | 20× AI Pro | 30 TB of storage, the highest model access |
Limits from Google's help page Learn about Gemini Notebook's plans and usage multipliers from Manage your usage limits, both read October 22, 2026; Google says they may change. US prices from Google's announcements: AI Plus dropped from $7.99 to $4.99 on June 8, 2026 (reported by 9to5Google that day), AI Pro is $19.99 (Google's student offer post, August 19, 2026) and the two Ultra tiers were set at $100 and $200 in Google's I/O 2026 subscriptions post, down from $249.99 at launch. Google's own plans page shows the price for your country.
What the free plan includes
- The core of Gemini Notebook: chat grounded in your sources with citations, Audio Overviews, mind maps, reports, flashcards, quizzes, slide decks and infographics. The paid plans mostly raise limits rather than unlock features; Google's plans page lists the exceptions, such as watermark removal on Pro and Ultra and higher Gemini model access.
- 100 notebooks, 50 sources per notebook, up to 500,000 words or 200 MB per source.
- Usage is counted by compute since September 2, 2026, with an allowance that refreshes every 5 hours up to a weekly limit. When you hit it, Generate later queues a Studio generation for when room is back. How the limits work
NotebookLM free vs Pro
| Free | Google AI Pro ($19.99 a month, US) | |
|---|---|---|
| Sources per notebook | 50 | 300 |
| Notebooks | 100 | 500 |
| Usage | Standard | 4× standard |
| Studio outputs (Audio and Video Overviews, mind maps, reports, flashcards, quizzes, slides, infographics) | Yes | Yes, with more usage and no watermark |
| Also included | The Gemini app's free tier | Gemini app Pro features, 5 TB of storage, early access to new features |
Paid plans mostly raise limits rather than unlock features. If 50 sources is the only wall, Google AI Plus ($4.99) doubles it to 100. Same sources as the plans table above.
Which plan, if any
- Stay free if your notebooks hold under 50 sources and you generate a few artifacts a day. Most study and reading notebooks fit.
- AI Plus ($4.99) doubles sources, notebooks and usage. It's the cheapest way past the 50-source wall and the extra 400 GB of storage is often worth it on its own.
- AI Pro ($19.99) is for notebooks with hundreds of sources (a whole course, a literature review, a company's documents) or for heavy Studio use: 4× the usage and priority access to new features.
- AI Ultra is priced for people who also need the Gemini app's top usage tier; Gemini Notebook alone rarely justifies it.
- Before paying for sources, make room. Delete duplicates, merge a YouTube playlist into one source, and move old sources out. Make room in a full notebook
Students, Workspace and enterprise
- Students: Google announced on August 19, 2026 that eligible college students in the US get 12 months of Google AI Pro at no cost, and students in over 140 other markets get 12 months of Google AI Plus. Redeem by December 31, 2026; a payment method is needed and the plan bills at the normal price afterwards unless cancelled. How to claim the student offer
- Google Workspace: Gemini Notebook comes with qualifying Workspace and Workspace for Education licences, with the plan's limits set by the licence. Google's plans page lists which.
- Gemini Enterprise: Gemini Notebook for Enterprise is part of Gemini Enterprise, listed on Google's subscriptions page at $21 per user a month for Business and $30 for Standard and Plus, read October 22, 2026.
KastorFlow's plans are separate
KastorFlow is a Chrome extension that adds imports, organizing, exports and automations to Gemini Notebook. It doesn't change Google's limits or prices. It has its own free plan, and Pro from $2.99 a month or $19 a year for its first 100 subscribers (then $7 a month or $47.88 a year). KastorFlow pricing
Use the room your Google plan gives you: delete in bulk, find duplicates, merge playlists into one source. Free to install.
Add to ChromeQuestions
How much does NotebookLM cost?
Nothing. Gemini Notebook, NotebookLM's new name, is free with a Google account: 100 notebooks, 50 sources each. Higher limits come with Google's AI plans, which cover Gemini and other Google products too: Google AI Plus at $4.99 a month, Google AI Pro at $19.99 and Google AI Ultra from $99.99 (US prices, October 2026).
Is there a NotebookLM Plus or NotebookLM Pro subscription?
Not as a separate product. NotebookLM Plus was folded into Google's AI plans in 2025. Today the higher Gemini Notebook limits come with Google AI Plus, Google AI Pro, Google AI Ultra, qualifying Google Workspace licences and Gemini Enterprise.
What does Google AI Pro add to NotebookLM?
300 sources per notebook instead of 50, 500 notebooks instead of 100, usage limits four times the free plan's, higher Gemini model access and priority early access to new features, for $19.99 a month in the US. It also includes the Gemini app's Pro features and 5 TB of storage.
What is the difference between NotebookLM free and Pro?
The features are mostly the same; the limits are not. Free gives 50 sources per notebook and 100 notebooks; Google AI Pro ($19.99 a month in the US) gives 300 sources, 500 notebooks, four times the usage, no watermark on Studio outputs and higher Gemini model access. Free vs Pro, side by side
Is NotebookLM free for students?
The free plan is free for everyone. On August 19, 2026 Google also announced 12 months of Google AI Pro at no cost for eligible college students in the US, and 12 months of Google AI Plus for students in over 140 other markets, to redeem by December 31, 2026. A payment method is required and the plan bills at the normal price afterwards unless cancelled.
Is KastorFlow's price part of NotebookLM's?
No. KastorFlow is an independent Chrome extension with its own free plan and its own Pro and Pro+ plans (Pro from $2.99 a month for its first 100 subscribers, then $7). It doesn't change Gemini Notebook's limits or prices; it helps you use the room you have.
Related: Limits on every plan · NotebookLM alternatives · Gemini Notebook statistics