Leak: NotebookLM Testing 30-Minute AI Lectures and Single-Narrator Mode

Google’s innovative research tool, NotebookLM, is said to undergo a major transformation from its initial conversational “Deep Dive” feature. The latest leaks from TestingCatalog indicate that a specific “Lecture” format is being tested, which signals a big change in AI-generated audio consumption.

The existing duo-host format that reproduces a lively podcast is now being replaced by the “Lecture” mode that has one narrator only. The narrator conducts a continuous, organized monologue that is meant to link difficult concepts through your sources without any friendly chit-chat. One of the most remarkable things is that, coupled with the “Long” length setting, these AI lectures can last for as long as 30 minutes, making them ideal for deep-focus study sessions or long journeys.

Main Highlights at a Glance: Single-Host Narration: A focused, authoritative voice instead of a two-person dialogue. Extended Playtime: Sessions reaching the 30-minute mark for comprehensive coverage. New UI Options: Sits alongside formats like Critique, Debate, and Brief. Language Support: References to language selection and future voices like British English have also surfaced.

This update is a boon for NotebookLM, which now transforms it into a personalized professor for students and researchers. Though still in the testing phase, this transition shows Google’s dedication to making AI audio academic and professional. Remember to check your “Audio Overview” settings for this rollout!