If you use NotebookLM for research, you know how quickly sources pile up. Managing them manually, especially in notebooks with ten or more entries, has been one of the tool’s most frustrating pain points, but Google just fixed that.
NotebookLM, the AI-powered research assistant built on Gemini, is rolling out automatic source labeling and categorization. The feature activates once you have five or more sources in a notebook, and it automatically assigns labels for you.
Mo sources mo problems? Not anymore:
Rolling out now, NotebookLM can auto-label & categorize sources (when you have 5+), so you can spend less time scrolling and more time thinking/learning/philosophizing, etc.
Rename, reorganize, & personalize (emojis!) to your ❤️’s content. pic.twitter.com/WiY58zkQJU
— NotebookLM (@NotebookLM) April 24, 2026
How does NotebookLM’s auto-label and source categorization feature work?
When your notebook crosses the five-source threshold, NotebookLM reads the content of each source and automatically groups the ones that
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