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NotebookLM
What NotebookLM is
NotebookLM is Google’s AI research and learning assistant for working with material you provide. Add Google Docs or Slides, PDFs, text or Markdown files, web URLs, pasted text, public YouTube URLs, or audio files, then ask questions about those sources. Answers include citations that point back to the supplied material. Each source can contain up to 500,000 words or reach 200 MB when uploaded. NotebookLM can create Audio Overviews from documents, while its mobile app supports source questions, offline listening to downloaded Audio Overviews, flashcards, and quizzes. It runs on the web, Android, and iOS; Android support starts at version 10, with availability varying by region during rollout. Google says sources remain private unless a notebook is shared and uploaded data is not used to train models. Team members can share notebooks and collaborate in real time. The free tier lists 100 notebooks, 50 sources per notebook, 50 daily chat queries, and three daily Audio Overview generations. Paid plans start at $9.99/mo.
Who it suits
NotebookLM suits people researching or studying from their own documents, links, videos, and audio. Teams can use shared notebooks, while mobile users can review material with offline audio, flashcards, and quizzes.
What it does well
- Accepts documents, URLs, YouTube links, pasted text, and audio
- Answers include citations tied to supplied sources
- Creates Audio Overviews for listening
- Available on web, Android, and iOS
- Offers a free plan with listed usage limits
What to know first
- Chat does not keep question-and-answer history
- Android availability varies by country or region
- Free tier limits notebooks, sources, queries, and audio generations
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Google AI Pro | $19.99/mo · Includes Gemini Notebook with expanded access · 5 TB storage | $19.99 a month |
As notebooklm.google.com lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
NotebookLM centers its work on sources you provide, with citations, audio summaries, and study tools across web and mobile. Its free tier is substantial but has explicit daily and notebook limits, while paid access starts at $9.99/mo.
Facts from NotebookLM's own pages
- Audio Overviews
- It can turn documents into Audio Overviews that users can listen to on the go. · workspace.google.com, 11 Oct 2026
- Availability
- The mobile app is available on Android 10 or later and is being rolled out gradually, so availability can vary by country or region. · support.google.com, 11 Oct 2026
- Chat history
- NotebookLM does not currently keep a history of questions and responses in chat; users can save responses by pinning them as notes. · workspace.google.com, 11 Oct 2026
- Citations
- NotebookLM answers using uploaded sources and provides citations that users can check against those sources. · workspace.google.com, 11 Oct 2026
- Founded
- 2023 · notebooklm.google.com, 28 Sept 2026
- Free usage limits
- The help page lists 100 notebooks, up to 50 sources per notebook, 50 daily chat queries, and 3 daily Audio Overview generations for the base tier. · support.google.com, 11 Oct 2026
- Maker
- Google’s company history says Google Inc. was founded in August 1998 and identifies its current headquarters as the Googleplex in Mountain View, California. · about.google, 11 Oct 2026
- Mobile app
- The mobile app supports asking questions about sources, listening to downloaded Audio Overviews offline, and reviewing material with flashcards or quizzes. · support.google.com, 11 Oct 2026
- Privacy
- Google says uploaded sources stay private unless the user shares a notebook, and uploaded data is not used to train models. · workspace.google.com, 11 Oct 2026
- Pro usage limits
- The help page lists up to 500 notebooks, 300 sources per notebook, 500 daily chat queries, and 20 daily Audio Overview generations for Pro. · support.google.com, 11 Oct 2026
- Purpose
- NotebookLM is an AI research and learning assistant that uses sources you provide to help you understand information and develop insights. · workspace.google.com, 11 Oct 2026
- Source formats
- It supports Google Docs and Slides, PDFs, text and Markdown files, web URLs, pasted text, public YouTube URLs, and audio files. · workspace.google.com, 11 Oct 2026
- Source limits
- Each source can contain up to 500,000 words or be up to 200 MB when uploaded as a file. · workspace.google.com, 11 Oct 2026
- Workspace integration
- Users can import Google Docs and Slides from Drive and share notebooks with their team for real-time collaboration. · workspace.google.com, 11 Oct 2026
Where NotebookLM stands on Freedom251
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