Gemini Notebook (formerly NotebookLM)
Google · AI Research Assistant for Your Documents
Upload your own documents, PDFs, and notes and ask questions — Gemini Notebook, formerly NotebookLM, answers with citations drawn only from your sources and turns them into audio and video overviews, reports, and study aids.
Best for
Researchers and students who need to ask questions about a defined set of documents with cited answers
Not ideal for
Open-ended chat or tasks where you don't want to curate a source set first
Who it's for
Students and researchers who need an AI assistant grounded in their own document collections
Capabilities
- Question answering grounded in the sources in your notebook, with inline citations
- Supports Google Docs/Slides/Sheets, Office files, PDFs, audio, images, web URLs, YouTube, ePub, and text
- Fast Research and Deep Research to discover and import web sources
- Audio Overviews and Video Overviews generated from your sources
- Reports, study guides, flashcards, quizzes, and mind maps
- Infographics and slide decks
- Sync with the Gemini app
- Android and iOS apps, including offline Audio Overview playback
Limitations
- Answers are grounded only in sources in the notebook — not an open-ended chat assistant
- Free tier: 50 sources per notebook (up to 500K words / 200MB each) and 50 chats/day; higher limits need a paid Google AI plan
- Premium features like chat customization and notebook analytics require a paid plan
- Only the Enterprise edition has an API, and it is in preview
Use cases
- Asking questions across a large document collection
- Summarising and cross-referencing multiple research papers
- Studying course materials with cited answers, flashcards, and quizzes
- Analysing reports, contracts, or lengthy reference documents
- Creating audio and video summaries from reading materials
Gemini Notebook (formerly NotebookLM) pricing
Free
Free
- 100 notebooks, 50 sources per notebook
- 50 chats/day
- 3 Audio and 3 Video Overviews/day
- 10 reports/day, 10 Deep Research/month
Google AI Plus
$4.99/month
Billed monthly
- 200 notebooks, 100 sources per notebook
- 200 chats/day
Google AI Pro
$19.99/month
Billed monthly
- 500 notebooks, 300 sources per notebook
- 500 chats/day, 20 Audio Overviews/day
Google AI Ultra
From $99.99/month
Billed monthly
- Up to 600 sources per notebook
- Up to 5,000 chats/day
Free tier limits: 100 notebooks, 50 sources per notebook, 50 chats/day, 3 Audio and 3 Video Overviews/day, 10 reports/day, and 10 Deep Research runs/month.
Note: Paid limits come through Google AI subscriptions, qualifying Google Workspace plans, or Gemini Notebook Enterprise on Google Cloud (which has a preview REST API).
Integrations & fit
Alternatives to consider
Gemini Notebook (formerly NotebookLM) vs Perplexity — full comparison →Elicit
Researchers, students, and R&D teams who need to process large volumes of scientific literature efficiently
FreemiumPerplexity AI
Fact-checking, current events research, and cited answers
Freemium
HKUDS (Data Intelligence Lab@HKU)
Self-learners, students, and technically comfortable teachers or research labs who want a free, self-hosted tutor that teaches from their own documents, tracks mastery, and keeps an auditable memory, using whichever model provider or local model they choose
FreeAbout Gemini Notebook (formerly NotebookLM)
Gemini Notebook — called NotebookLM until Google renamed it on July 16, 2026 — is an AI-powered research assistant from Google that is grounded in the sources in each notebook. Unlike general AI assistants that draw on their training data, it answers only from the sources you add — Google Docs, Slides, and Sheets, Word and PowerPoint files, PDFs, audio, images, web pages, YouTube links, ePubs, or pasted text — and cites each answer with specific passages from those sources. It can also find sources for you: Fast Research pulls relevant material from the web or Google Drive from a query, and Deep Research browses up to hundreds of websites and writes multi-page reports that are imported as sources. From your sources it generates Audio Overviews (podcast-style discussions), Video Overviews, reports, study guides, flashcards and quizzes, mind maps, infographics, and slide decks, and notebooks now sync with the Gemini app; a cloud computer that writes and runs code for data analysis is rolling out on higher tiers. It is available on the web and in Android and iOS apps. A free tier covers most use (100 notebooks, 50 sources each, 50 chats a day), while Google AI Plus, Pro, and Ultra plans — and qualifying Workspace plans — raise limits and add premium features. Its main limitation is that answers are only as good as the sources in the notebook: it is built for working with a defined source set, not for open-ended chat.
Updates from Gemini Notebook (formerly NotebookLM)
Google renamed NotebookLM to Gemini Notebook. It remains a standalone product, now synced with the Gemini app, at notebook.google.com.
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