Gemini Notebook (formerly NotebookLM) vs Microsoft Copilot (2026): Which AI Tool Is Better?

Both are popular AI chat assistants. Here is how Gemini Notebook (formerly NotebookLM) and Microsoft Copilot stack up on price, strengths and weaknesses, and which one we would pick.

Gemini Notebook (formerly NotebookLM)

Google's source-grounded notebook that turns documents into audio and video overviews

8.4 /10

Pricing: Free plan, paid from $4.99/mo

Pros

Answers stay grounded in the sources you upload
Generous free plan: 100 notebooks, 50 sources each, 3 audio and 3 video overviews a day
Audio Overviews, Video Overviews, slide decks, infographics, mind maps and reports
Syncs with the Gemini app; code execution on higher tiers

Cons

Output styles are fixed and hard to brand or edit
Cinematic video overviews and the highest limits need AI Pro or Ultra
Renamed in July 2026, and plan limits changed again in September
Only as good as the sources you feed it

Visit Gemini Notebook (formerly NotebookLM) ↗

Microsoft Copilot

Microsoft's assistant in Windows, Edge and Word, Excel and PowerPoint

7.2 /10

Pricing: Free plan, paid from $9.99/mo

Pros

Free Copilot app runs GPT-5 on Windows, Mac, iOS and Android
Paid Microsoft 365 plans put Copilot inside Word, Excel, PowerPoint and Outlook
Bundles Office apps and 1 TB+ storage with the AI features
Microsoft 365 Family covers up to 6 people (AI for the owner only)

Cons

Consumer terms say you can only use Copilot for your own personal use
Usage levels are described vaguely ("higher", "extensive") rather than as numbers
Agentic features are limited below the $99.99 Pro tier
No transparent model choice in the consumer app

Visit Microsoft Copilot ↗

Gemini Notebook (formerly NotebookLM) vs Microsoft Copilot at a glance

	Gemini Notebook (formerly NotebookLM)	Microsoft Copilot
Editor score	8.4 / 10	7.2 / 10
Pricing model	Freemium	Freemium
Starting price	$4.99/mo	$9.99/mo
Reader upvotes	0	0
Best for	research, google, audio-overviews	chatbot, microsoft, office
Model choice	No	No
Commercial use	Yes	No
No watermark (free)	No	No
API	No	No
Official MCP server	No	No
MCP client	No	No
Agent Skills	No	No
Brand kit	No	No
Teams	Yes	No
Content Credentials	No	Yes
Mobile app	No	Yes
20+ languages	No	No
Makes	Podcasts, YouTube & long video, Presentations & docs, Blog posts & articles	Emails & newsletters, Blog posts & articles, Presentations & docs, Images & illustrations
AI models inside	1	1

Our pick

Gemini Notebook (formerly NotebookLM) edges it with a score of 8.4 versus 7.2. Gemini Notebook (formerly NotebookLM) is the better fit if you value: answers stay grounded in the sources you upload, generous free plan: 100 notebooks, 50 sources each, 3 audio and 3 video overviews a day. Choose Microsoft Copilot instead if you need: free copilot app runs gpt-5 on windows, mac, ios and android, paid microsoft 365 plans put copilot inside word, excel, powerpoint and outlook.