NotebookLM

What is NotebookLM?

NotebookLM (rebranded "Gemini Notebook" as of mid-2026) is Google's AI research and note-taking tool that grounds every answer strictly in sources a user uploads — PDFs, Google Docs/Slides, web URLs, YouTube videos, and audio files — rather than the open internet, with inline citations linking back to the exact source. Its signature feature, Audio Overviews, turns a notebook's sources into a podcast-style discussion users can listen to, and Video Overviews do the same as narrated slide-style videos; it also generates written reports, flashcards, quizzes, mind maps, and infographics from the same sources.

It's free with a Google account at meaningful usage limits (100 notebooks, 50 sources each, 50 chats/day), with higher limits and models bundled into Google's AI Plus, Pro, and Ultra subscription plans or qualifying Workspace plans, rather than sold as its own standalone subscription.

Key features

• Chat answers are strictly grounded in and cited to your uploaded sources
• Audio Overviews turn sources into a podcast-style discussion you can listen to
• Video Overviews generate narrated, slide-style video summaries of your sources
• Generates reports, flashcards, quizzes, mind maps, and infographics from sources
• Supports PDFs, Google Docs/Slides, web URLs, YouTube videos, and audio files
• Custom response styles (e.g., academic, analytical) for tailored chat output

How to get started

1. Create a new notebook and add sources (PDFs, docs, URLs, YouTube links, audio)
2. Ask questions in chat and get cited answers grounded in those sources
3. Generate an Audio or Video Overview to listen to or watch a summary
4. Create study aids like flashcards, quizzes, or mind maps from the same sources
5. Upgrade to a Google AI plan for higher notebook, source, and generation limits

NotebookLM pricing

NotebookLM is free with a Google account at generous limits (100 notebooks, 50 sources per notebook, 50 chats/day, 3 Audio/Video Overviews/day). Higher limits and priority model access come bundled into Google AI Plus (~$8/mo), Google AI Pro (~$20/mo), and Google AI Ultra (~$250/mo), or through a qualifying Google Workspace plan — it is not sold as its own separate subscription.

Our take: Distinctive for strictly grounding every answer in user-provided sources with citations, plus its widely imitated Audio Overview "podcast" feature — a different trust model than open-web AI search or chat tools.

Prices verified 2026-09. Plans change often — confirm on the official site above before you buy.

Use cases

• Students studying from lecture slides, readings, and recorded classes in one notebook
• Researchers summarizing and cross-referencing findings across many papers
• Professionals building executive summaries from reports and internal documents
• Teams creating onboarding notebooks from manuals, policies, and FAQs

NotebookLM vs. alternatives

FAQ

Is NotebookLM free to use?

NotebookLM's plans: Free; higher limits via Google AI Plus (~$8/mo), Pro (~$20/mo), Ultra (~$250/mo). Pricing and free-tier limits change over time, so check the official site above for the latest details.

What is NotebookLM used for?

Google's source-grounded AI research assistant that answers only from documents you upload, with audio/video overviews and citations.

Who is NotebookLM best for?

NotebookLM is a good fit for students studying from lecture slides, readings, and recorded classes in one notebook, or researchers summarizing and cross-referencing findings across many papers.

What are the alternatives to NotebookLM?

Commonly compared alternatives include Elicit, Perplexity, and Humata, see the comparison above for how they differ.

How much does NotebookLM cost?

NotebookLM is free to use with a Google account at generous daily/monthly limits; higher usage and model access come through Google's AI Plus, Pro, or Ultra subscriptions (roughly $8, $20, and $250 per month respectively), rather than a standalone NotebookLM subscription.