Compare AI tools

	Perplexity S	Cursor S	NotebookLM S	ChatGPT Operator B
Tagline	AI search done right. Cited answers, not chat theater.	VS Code fork that made AI coding actually work.	Google's research notebook. Turns your docs into a podcast.	OpenAI's browser agent. Clicks and types on websites for you.
Category	research	coding	research	agents
Pricing	Free + $20/mo Pro	Free + $20/mo Pro + $40/mo Business	Free	Included with ChatGPT Pro $200/mo
Best for	Replacing Google for any question where you want a cited answer in seconds.	Developers. Non-developers who want to ship working code.	Students, researchers, anyone with a stack of PDFs or a topic to learn.	Power users willing to pay $200/mo for a browser bot.
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Tab completion feels like mind-reading Composer for multi-file edits Runs Claude, GPT, Gemini — you pick	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying	Actually uses websites — fills forms, clicks, checks out Built into ChatGPT Good for repetitive web tasks
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Can feel overwhelming for non-coders Expensive at scale	Google-only Can be slow on large corpora	Slow vs doing it yourself Breaks on complex auth flows $200/mo gate
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 coding. If you write code of any kind, this pays back the $20 in a day.	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.	B-tier. Still early. Manus is more flexible for less money.
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