Google is updating NotebookLM , its AI note-taking and research assistant, with a new tool to help users simplify complex research, along with support for additional file types.

The service is rolling out “Deep Research,” a tool that will automate and simplify complex online research. Google says the tool acts like a dedicated researcher, as it can synthesize a detailed report or recommend relevant articles, papers, or websites.

Deep Research can take your question, create a research plan, and then browse websites on your behalf. After a few minutes, it will present you with a source-grounded report that you can add directly into your notebook. While Deep Research runs in the background, you can continue to add other sources.

The idea behind Deep Research is to help you create a deep,

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