NotebookLM Plus vs Free: what's the difference?

In more detail

The standard tier is documented at 100 notebooks, 50 sources per notebook, 50 queries per day, and 3 Audio Overviews per day. Paid Google plans raise those ceilings and add customization (tone, focus, and length of Audio Overviews and chat responses), premium models for tougher reasoning, and shared notebooks with role-based access (viewer/editor). Google has changed the packaging and naming of these plans more than once, and availability and pricing differ by account and region, so check Google's current Gemini Notebook help page rather than relying on a third-party summary. For casual users the standard tier is genuinely generous; for large literature reviews and shared notebooks, a paid Google plan is the upgrade path.