Microsoft Copilot vs NotebookLM

Side-by-side comparison of Microsoft Copilot and NotebookLM: pricing, features, API access, and community ratings.

AI comparison summary

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	Microsoft Copilot Your everyday AI companion powered by Microsoft and OpenAI Visit	NotebookLM Your AI-powered research and note-taking assistant, grounded in your sources Visit
Category	Chat assistants	Chat assistants
Pricing	Freemium	Freemium
Starting price	USD 20/mo
Free tier
Audience	All audiences	All audiences
API available
Open source
Self-hostable
Model provider	OpenAI (GPT-4o)	Google
Founded	2023	2023
Headquarters	Redmond, USA	Mountain View, United States
Key strengths	·Deep integration with Microsoft 365 ecosystem ·Powered by GPT-4o with real-time web grounding via Bing ·Multimodal capabilities including image generation via DALL·E ·Available across web, Windows, Edge, and mobile	·Grounds all AI responses strictly in user-uploaded sources ·Generates AI-powered audio overviews (podcast-style summaries) ·Supports multiple source types: PDFs, Google Docs, URLs, YouTube videos ·Instant Q&A and document summarization with inline citations