Does NotebookLM work offline?
One sentence: no, NotebookLM requires an internet connection for everything AI-related, since it processes your documents on Google's servers, but you can download generated audio to listen offline afterward.
No. NotebookLM is entirely cloud-based: uploading sources, chatting, and generating audio, video, mind maps or study material all require an active internet connection. The one exception is listening to an Audio Overview you already downloaded, which plays without a connection like any local audio file.
Why there's no offline mode
Every NotebookLM feature runs on Google's Gemini model on Google's servers. Your documents get uploaded and processed there, not on your device, which is also what makes NotebookLM's citations, summaries and generated audio possible in the first place. There is no local, on-device version of the product on any plan, free or paid.
What actually works without a connection
- Downloaded Audio Overviews. Generate the episode while online, download it, and it plays offline afterward exactly like any downloaded podcast or MP3.
- The mobile app's offline audio queue. The NotebookLM mobile app explicitly supports downloading Audio Overviews for offline listening on a commute or flight.
What does not work offline
Adding sources, asking questions in chat, generating a mind map, study guide, flashcards, quiz, or a new Audio or Video Overview all need a live connection. There is no cached or local version of your notebook you can browse offline; opening the app without internet gets you an error, not a read-only archive.
If you genuinely need an offline AI notebook
NotebookLM is not the tool for that use case; it was never designed to run locally. Self-hosted alternatives exist that run open-weight models entirely on your own machine (search for local retrieval-augmented-generation tools), but they trade NotebookLM's polish and Audio Overview quality for full offline operation. If your actual concern is data leaving your control rather than connectivity, a Workspace account with enterprise data protections may address that without giving up the product; see is NotebookLM safe.
People also ask
Can I use NotebookLM on a plane?
Only to listen to Audio Overviews you already downloaded before losing connection. Chat, source uploads and new generations all require internet access.
Does NotebookLM save my notebooks locally on my device?
No. Notebooks and sources live on Google's servers and are accessed through the web or mobile app. There is no local file you can open without signing in and connecting.
Is there a downloadable desktop version of NotebookLM?
No. NotebookLM is a web application (with companion iOS and Android apps), not a downloadable desktop program, and none of them run without a connection.
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