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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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Windsurf
A
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A
v0
S
Manus
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Spreadsheets with AI + live integrations baked in.Vercel's AI-powered UI generator. Prompt to shadcn component.Autonomous AI agent that actually finishes tasks.
CategoryCodingDataDesignAgents
PricingFree + $15/mo ProFree + $19-$89/user/moFree + $20/moFree tier + $39-$199/mo
Best forDevelopers who want Cursor-like power for less money.Ops teams, marketers, anyone building dashboards from multiple sources.Frontend devs, PMs prototyping UIs, anyone on Next.js.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
Weaknesses
  • Smaller community
  • Model selection more limited
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Best for shadcn stack
  • Iterating can be fiddly
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier. If you're on Vercel/shadcn, this is cheating.S-tier in the agent category. The first one I'd give to a non-technical friend.
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