Overview
- Deep Research plans and executes background web browsing across hundreds of sites to produce organized, citation-backed multi-page reports.
- Users can steer the process by specifying sources or adding materials as the report generates, then import the output and citations into a notebook.
- Two research styles are available, with Fast Research for quick scans and Deep Research for in-depth analysis to surface higher-quality sources.
- NotebookLM now ingests more formats, including Google Sheets, Drive files via URL, PDFs from Drive, Microsoft Word (.docx), and images such as handwritten notes.
- Google says the update will reach all users within about a week, with image support arriving over the following weeks.