Besides Nano Banana, NotebookLM is probably my favorite Google AI tool. Today, the company just rolled out another powerful NotebookLM upgrade, one that allows Deep Research and web browsing.

As part of this upgrade, the AI can sift through hundreds of sources on the web and generate a fully organized report for you. Additionally, today’s rollout also adds long-awaited support for more file types, including PDFs from Google Drive, Google Sheets and full .docx uploads.

As someone who spends a lot of time sifting through AI whitepapers and reading academic summaries about the latest AI advancements, I wanted to see how NotebookLM Deep Research streamlined my process. It sounded impressive but was it genuinely helpful?

Here’s what happened when I put it to the test.

I was surprised by wha

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