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NotebookLM Can Now Debate You — Literally
3 min read Google just gave NotebookLM a voice — literally. With new audio modes like Brief, Critique, and Debate, your notes can now summarize, challenge, and even argue with you. It’s AI notetaking that *thinks out loud*. September 03, 2025 16:25
NotebookLM Adds “Brief”, “Critique”, and “Debate” Audio Modes — Plus New Voices
What’s New:
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Google has upgraded NotebookLM with three new Audio Overview formats in addition to the existing Deep Dive mode:
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Brief: A concise 1–2‑minute summary of your source material.
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Critique: Provides expert‑style feedback on your content, highlighting strengths and areas to refine.
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Debate: Simulates a structured debate between two AI hosts to explore opposing viewpoints.
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Users can access these formats via a pencil icon in the Audio Overview card—this joins existing customization options like language, length, and prompt settings, now available on Android and iOS.
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Google also added new male and female AI voices, addressing a long-requested need for more expressive and personalized AI audio experiences.
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These updates are rolling out across all supported languages, building on prior upgrades that made audio and video overviews more comprehensive in more than 80 languages.
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