Microsoft Copilot vs NotebookLM

A side-by-side comparison of Microsoft Copilot and NotebookLM — pricing, free tiers, and who each tool is genuinely best for.

	Microsoft Copilot	NotebookLM
Tagline	Microsoft's AI assistant across Windows, Edge, and Microsoft 365	Google's AI research assistant grounded in your sources
Category	AI Assistants & Chatbots	AI Assistants & Chatbots
Pricing	Free tier; Copilot Pro $20/mo; Microsoft 365 Copilot from $30/user/mo	Free with a Google account; NotebookLM Plus via Google One AI Premium (~$19.99/mo, may vary).
Free tier
Best for	Enterprises and individuals heavily invested in Microsoft 365 who want AI inside Word, Excel, and Outlook.	Students and researchers who need accurate, cited answers derived only from their own uploaded materials.
Not for	Users outside the Microsoft ecosystem looking for a lightweight standalone chatbot.	Users who want general open-ended chat beyond their uploaded documents.
Use cases	Drafting in Word and Outlook Excel data analysis Meeting recaps in Teams Web search assistance PowerPoint generation	Literature review Study guide generation Podcast-style summaries Source-cited Q&A
	Visit Microsoft Copilot	Visit NotebookLM

Choose it if: Enterprises and individuals heavily invested in Microsoft 365 who want AI inside Word, Excel, and Outlook.

Choose it if: Students and researchers who need accurate, cited answers derived only from their own uploaded materials.