What are NotebookLM's limits?

In more detail

Google currently documents the standard Gemini Notebook tier as 100 total notebooks, 50 sources per notebook, 50 daily chat queries across all notebooks, 3 Audio Overviews per day, and a per-source maximum of 500,000 words or 200 MB. Paid Google plans can raise these limits and add Audio Overview customization and shared notebooks, but plan names, availability, and pricing vary by account and region, so check Google's current Gemini Notebook help page before purchasing. Common workarounds: curate sources tightly (30 great beats 300 mediocre), batch queries in focused sessions, split very long PDFs into chapters.