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NotebookLM
NotebookLM is Google's source-grounded research assistant, powered by Gemini, that answers questions strictly from documents, websites, and videos the user uploads. It generates outputs like audio overviews, video overviews, slide decks, infographics, mind maps, and study guides from those sources, with inline citations back to the original material. A June 2026 update added agentic source discovery and a secure code-execution environment per notebook.
Perplexity
An AI-powered search engine and research tool that provides conversational answers with cited sources, changing how we discover information.
The AI brief for builders, operators, and leaders
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