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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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Chatbots
Research
Coding
Image
Video
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Meetings
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Productivity
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Agents
Dev Platform
Data
Marketing
Education
Perplexity
S
Kling
A
Cursor
S
Lex
A
TaglineAI search done right. Cited answers, not chat theater.Kuaishou's video model. The surprise standout.VS Code fork that made AI coding actually work.Google Docs with an AI collaborator baked in.
CategoryResearchVideoCodingWriting
PricingFree + $20/mo ProCredit-based, free trialFree + $20/mo Pro + $40/mo BusinessFree + $12/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Anyone who wants top-tier video quality for less.Developers. Non-developers who want to ship working code.Essays, long-form drafts, thinking on the page.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • UX is rough for English speakers
  • Queue times
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.
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