Google is set to redefine digital research with its latest upgrade to NotebookLM. The new Deep Research tool integrates seamlessly into the AI note-taking assistant, automating the process of collecting and synthesizing online information to create detailed, source-grounded reports.
How Deep Research Works
Deep Research acts like a dedicated research assistant. Users can initiate a search in the source panel and choose “Web” as their source, then select between a comprehensive briefing using Deep Research or opt for a quicker overview with Fast Research. The tool creates a research plan from your inquiry, browses relevant websites, and compiles findings into a structured report that can be directly added to your notebook.
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Enhancing Workflow With Expanded File-Type Support
Beyond its research capabilities, NotebookLM now supports additional file types. Users can upload Google Sheets, Drive files via URLs, PDFs from Google Drive, and Microsoft Word documents. This update facilitates the generation of summaries from diverse data sources and enables effortless management of multiple Drive files.
Continued Investment In AI-Driven Tools
Since its launch in late 2023, Google has steadily expanded NotebookLM’s functionality. Innovations such as Video Overviews and Audio Overviews have transformed raw multimedia content and dense documents into digestible visual and auditory formats. With recent releases of dedicated apps for Android and iOS, Google is making these powerful research tools accessible across multiple platforms.
Looking Ahead
The Deep Research tool and expanded file support are expected to be available to all users within the week. This development underscores Google’s commitment to enhancing productivity and efficiency in research, empowering professionals to build in-depth, organized knowledge bases without interrupting their workflow.

