Compare AI tools

	Perplexity S	NotebookLM S	v0 S	Cursor S
Tagline	AI search done right. Cited answers, not chat theater.	Google's research notebook. Turns your docs into a podcast.	Vercel's AI-powered UI generator. Prompt to shadcn component.	VS Code fork that made AI coding actually work.
Category	Research	Research	Design	Coding
Pricing	Free + $20/mo Pro	Free	Free + $20/mo	Free + $20/mo Pro + $40/mo Business
Best for	Replacing Google for any question where you want a cited answer in seconds.	Students, researchers, anyone with a stack of PDFs or a topic to learn.	Frontend devs, PMs prototyping UIs, anyone on Next.js.	Developers. Non-developers who want to ship working code.
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying	Ships working React + Tailwind code Shadcn/ui native One-click deploy to Vercel	Tab completion feels like mind-reading Composer for multi-file edits Runs Claude, GPT, Gemini — you pick
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Google-only Can be slow on large corpora	Best for shadcn stack Iterating can be fiddly	Can feel overwhelming for non-coders Expensive at scale
Kai's verdict	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.	S-tier. If you're on Vercel/shadcn, this is cheating.	S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
Link	Open →	Open →	Open →	Open →