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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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Coding
Agents
Research
Chatbots
Image
Video
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Meetings
Design
Productivity
Audio
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Dev Platform
Data
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Windsurf
A
Perplexity
S
Kling
A
Runway
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.AI search done right. Cited answers, not chat theater.Kuaishou's video model. The surprise standout.The pro's AI video tool. Gen-4 is the current bar.
CategoryCodingResearchVideoVideo
PricingFree + $15/mo ProFree + $20/mo ProCredit-based, free trialFree + $15-$95/mo
Best forDevelopers who want Cursor-like power for less money.Replacing Google for any question where you want a cited answer in seconds.Anyone who wants top-tier video quality for less.Marketing video, pitch decks, b-roll, creative shorts.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • 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
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
Weaknesses
  • Smaller community
  • Model selection more limited
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • UX is rough for English speakers
  • Queue times
  • Expensive at scale
  • Still needs post-editing
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-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. Market leader with reason. Start here for serious video.
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