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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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Perplexity
S
Windsurf
A
Manus
S
Cursor
S
TaglineAI search done right. Cited answers, not chat theater.Codeium's agentic IDE. Cascade agent + strong free tier.Autonomous AI agent that actually finishes tasks.VS Code fork that made AI coding actually work.
CategoryResearchCodingAgentsCoding
PricingFree + $20/mo ProFree + $15/mo ProFree tier + $39-$199/moFree + $20/mo Pro + $40/mo Business
Best forReplacing Google for any question where you want a cited answer in seconds.Developers who want Cursor-like power for less money.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.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
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • 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
  • Smaller community
  • Model selection more limited
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Can feel overwhelming for non-coders
  • Expensive at scale
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. Close second to Cursor. If $5/mo matters, start here.S-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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