Google NotebookLM Audio Overviews Goes Viral: AI Podcast from Any Document

Google NotebookLM's "Audio Overview" feature—which generates a podcast-style conversation between two AI hosts discussing any uploaded document—has become a viral productivity tool. Users upload research papers, business reports, or textbooks and receive a 10-15 minute audio discussion synthesizing key insights. The feature has been used 20M+ times since launch, with particular adoption among students, researchers, and business professionals who prefer audio learning. Google has expanded NotebookLM to support 50+ source types and 29 languages. Enterprise version with company data integration and branding customization announced.