Compare AI tools

	Lex A	Cursor S	Perplexity S	Replit Agent A
Tagline	Google Docs with an AI collaborator baked in.	VS Code fork that made AI coding actually work.	AI search done right. Cited answers, not chat theater.	Replit's AI that builds + deploys full apps on their platform.
Category	Writing	Coding	Research	Coding
Pricing	Free + $12/mo	Free + $20/mo Pro + $40/mo Business	Free + $20/mo Pro	$10-$25/mo Core/Teams
Best for	Essays, long-form drafts, thinking on the page.	Developers. Non-developers who want to ship working code.	Replacing Google for any question where you want a cited answer in seconds.	Teachers, students, prototypers, hackathon builders.
Strengths	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together	Tab completion feels like mind-reading Composer for multi-file edits Runs Claude, GPT, Gemini — you pick	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Full-stack + DB + auth + deploy in one environment Great for teaching/learning Runs everything in-browser
Weaknesses	Less feature-rich than Google Docs AI ceiling below dedicated tools	Can feel overwhelming for non-coders Expensive at scale	Not a general chatbot Answers can be shallow on complex topics	Locked into Replit hosting Less code quality than dedicated IDEs
Kai's verdict	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.	S-tier for coding. If you write code of any kind, this pays back the $20 in a day.	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	A-tier. Best for teaching a kid to code in 2026.
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