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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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DeepSeek
S
Aider
A
Lovable
A
Rows
A
TaglineChinese open-weight powerhouse. Crazy cheap, genuinely smart.Terminal-based AI pair programmer. Git-aware, model-flexible.Build a full app from a prompt. Stripe-ready.Spreadsheets with AI + live integrations baked in.
CategoryChatbotsCodingDesignData
PricingFree web + ultra-cheap API (~$0.14/M input tokens)Free (open source) + whatever API you useFree + $25-$100/moFree + $19-$89/user/mo
Best forDevelopers + cost-conscious builders. Anyone fine with self-hosting.Developers who want open-source tooling with full control.Non-devs + solopreneurs shipping MVPs.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Generates full apps + DB + auth
  • Good for non-developers
  • Ships faster than hand-coding
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Complexity ceiling
  • Can generate brittle code
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictS-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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