Compare AI tools

	Perplexity S	Claude Code S	NotebookLM S	GitHub Copilot B
Tagline	AI search done right. Cited answers, not chat theater.	Anthropic's CLI agent. Opus-powered, operates on your repo directly.	Google's research notebook. Turns your docs into a podcast.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.
Category	research	coding	research	coding
Pricing	Free + $20/mo Pro	Part of Claude Pro/Max/Team plans	Free	Free (limited) + $10/mo Pro + $19/mo Business
Best for	Replacing Google for any question where you want a cited answer in seconds.	Developers who want an agent, not autocomplete. Large refactors, tests, docs.	Students, researchers, anyone with a stack of PDFs or a topic to learn.	Teams with GitHub already. Devs who don't want to change IDEs.
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Runs locally, edits your actual files Strong on large codebases with 1M context Great at multi-step tasks	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying	Great enterprise story Works in your existing IDE Chat + autocomplete
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Terminal-based — learning curve Can't be used without Claude subscription	Google-only Can be slow on large corpora	Less agentic than Cursor/Claude Code Model quality varies
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 if you live in the terminal. Different shape than Cursor — complementary, not replacement.	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.
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