NotebookLM’s Deep Research flips this completely. You define which sources matter. You specify “only UN agencies, government reports, and peer-reviewed journals.” You exclude blog posts, opinion pieces, and unverified claims.

The AI then researches deeply within the boundaries you set.

Notice the “ Constraints ” section. That’s where the power lives.

I’m not asking the AI to find “the best sources.” I’m telling it exactly which sources to trust and which to ignore.

What I got back was a comprehensive 7-page report that would have taken me weeks to compile manually. More importantly, every single citation was from a source I would... See more

The game-changing feature: Interactive Mode.

While listening, I could interrupt the podcast with a question. I typed: “What is the biggest risk going into 2026?”