Gemini Notebook vs Microsoft Copilot

Gemini Notebook, formerly NotebookLM, is a standalone research tool for organizing sources and answering questions grounded in those materials. It accepts PDFs, websites, YouTube videos, audio files, Google Docs, Google Slides, and other content. Answers include citations that point to exact source quotes. Audio Overview turns notebook material into a podcast-style discussion, while study notebooks can produce quizzes, interactive lessons, flashcards, and infographics from course materials. Notebooks can sync with Gemini Apps, where users can manage them and ask questions. A secure cloud computer can write and run code for source-grounded data analysis, with availability rolling out by plan. The Free plan costs nothing and includes 50 sources per notebook, 100 notebooks, 50 chat queries per day, and three audio generations per day. Named Google AI Plus, Pro, and Ultra plans list 2 TB, 5 TB, and 20 TB of storage, respectively, but no prices are listed. Individual data is not used to train the tool unless users provide feedback, which may permit review of the full interaction context. Workspace and Enterprise privacy terms differ, and some features require Keep Activity enabled.

Microsoft Copilot is an AI assistant available on the web, Windows, macOS, iOS, and Android. It supports web search, file uploads, image generation, app integrations, team workspaces, and AI bot generation. A free plan offers limited access subject to capacity and usage limits. Paid Microsoft 365 plans bundle Copilot with Word, Excel, PowerPoint, Outlook, OneNote, OneDrive, Defender, and Teams. Microsoft 365 Personal costs $99.99 a year for one person, includes 1 TB of cloud storage, and allows sign-in on five devices at once. Family costs $129.99 a year for one to six people and provides up to 6 TB of storage, but AI features are available only to the subscription owner. Premium is $199.99 a year; Pro is $99.99 a month. Paid plans provide increased usage for chat and visual AI assistance, with agentic AI usage limited on Premium and highest on Pro. AI-generated audio is English only.