By Abner Li
Publication Date: 2025-11-13 17:00:00
Following last week’s big mobile update, NotebookLM is back with Deep Research and Microsoft Word support.
NotebookLM is adding its own Deep Research capability to “automate and simplify complex online research.” Besides “recommending relevant articles, papers or websites,” Google will create a detailed report.
From the Source panel, “Deep Research” joins the existing Discover sources option, which is now called “Fast Research.”
- Fast Research: Best for a quick search. It rapidly scans for information, letting you immediately review and import sources.
- Deep Research: Best for a full briefing. It performs an in-depth analysis to find high-quality sources. This runs in the background so you can continue your work.

You can add both the generated report and sources that were used to the notebook. Google wants to help “you assemble a rich knowledge base on any topic without leaving your workflow. “