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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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TaglineOpen-source VS Code agent. Reads + writes + runs.OpenAI's image model. Built into ChatGPT Plus.Spreadsheets with AI + live integrations baked in.Terminal-based AI pair programmer. Git-aware, model-flexible.
CategoryCodingImageDataCoding
PricingFree (open source) + your API costsIncluded with ChatGPT Plus $20/moFree + $19-$89/user/moFree (open source) + whatever API you use
Best forVS Code users who want agentic coding without changing IDEs.ChatGPT Plus users who want images without paying extra.Ops teams, marketers, anyone building dashboards from multiple sources.Developers who want open-source tooling with full control.
Strengths
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
Weaknesses
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
Kai's verdictA-tier. Best free agentic option in VS Code. Use with Claude for best results.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.
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