Is NotebookLM free?

Yes, NotebookLM is free to use at notebooklm.google.com. You need a Google account to sign in. The free tier includes core features: creating notebooks, adding sources, querying your notebook, generating study guides, and creating Audio Overviews.

Free tier limits include caps on the number of notebooks and sources per notebook (currently up to 50 sources per notebook, 100 notebooks total).

NotebookLM Plus is available through Google One AI Premium or Google Workspace Business plans. Plus adds higher source limits, Audio Overview customization with custom instructions, and priority access during peak times. For most individual users and students, the free tier is more than sufficient for everyday research and study workflows.