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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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Cursor
S
Windsurf
A
Gemini
A
Aider
A
TaglineVS Code fork that made AI coding actually work.Codeium's agentic IDE. Cascade agent + strong free tier.Google's answer. Best integrated with Workspace + free for a lot.Terminal-based AI pair programmer. Git-aware, model-flexible.
Categorycodingcodingchatcoding
PricingFree + $20/mo Pro + $40/mo BusinessFree + $15/mo ProFree + $20/mo Advanced (bundled with 2TB Drive)Free (open source) + whatever API you use
Best forDevelopers. Non-developers who want to ship working code.Developers who want Cursor-like power for less money.Anyone already on Google, research tasks, summarizing long documents.Developers who want open-source tooling with full control.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Smaller community
  • Model selection more limited
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Close second to Cursor. If $5/mo matters, start here.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.
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