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Side-by-side comparison of Gemini Notebook, Perplexity
What matters	📓 Gemini Notebook	🔮 Perplexity
What it does	Gemini Notebook (formerly NotebookLM) is Google's source-based notebook assistant for understanding documents and building research outputs. Free tier available.	AI search and research assistant that returns source-linked answers, with free and paid research options.
Best for	Source-grounded study and research notebooks	Source-linked web research and questions
Pricing model	Free plan + paid	Free plan + paid
Free-plan limits	Free (Standard) allows up to 100 notebooks and 50 sources per notebook (Plus 200/100, Pro 500/300, Ultra 500/500 or 600). Since 2 September 2026 usage limits are compute-based and refresh every five hours; Google publishes no fixed daily number for free users, and its plans help page still mentions daily and monthly quotas. Limits are subject to change.	Standard (free): 3 Pro Searches per day, 1 research query per month, practically unlimited basic searches, limited file uploads; no advanced AI models, file/app creation, image generation or Comet Assistant queries. API is pay-as-you-go with no complimentary credits.
Platforms	Web	Web
Key capabilities	Source-based questions Document analysis Notebook organisation Research outputs	Source-linked answers Web search Research tools Model choice on eligible plans
Strengths	A notebook organised around your own sources fits a bounded research brief A free Standard tier with 100 notebooks and 50 sources per notebook Included with Google AI plans and some Workspace plans, with no separate price	Source-linked answers make the verification trail easier to inspect.
Limitations	No published number of free chats or Audio Overviews; limits are compute-based and refresh every five hours since 2 September 2026 Google's help pages are not fully consistent about limits, so numbers in older articles may be wrong Source selection limits the answer; missing or outdated documents remain your responsibility	Standard is free with basic access and limited advanced usage. Paid plans increase research and model allowances; API usage is billed separately. Citations are starting points: a real URL can still support a different claim.
No signup required	No	Not verified
No credit card required	Not verified	Not verified
Open source	Not verified	Not verified
Free trial	Not verified	Not verified
Access details reviewed	2026-10-29	2026-10-06
Official pricing / source	Check pricing Access source	Check pricing Access source
Next step	Explore Gemini Notebook	Explore Perplexity