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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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Aider
A
Groq
S
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Cursor
S
TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.The fastest AI inference in the world. Crazy low latency.The one that actually gets text in images right.VS Code fork that made AI coding actually work.
CategoryCodingDev PlatformImageCoding
PricingFree (open source) + whatever API you useFree tier + pay-as-you-go APIFree + $8/mo + $20/mo + $60/moFree + $20/mo Pro + $40/mo Business
Best forDevelopers who want open-source tooling with full control.Developers who need sub-100ms LLM responses.Anything with text — posters, ads, album covers, slide decks.Developers. Non-developers who want to ship working code.
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
Weaknesses
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Can feel overwhelming for non-coders
  • Expensive at scale
Kai's verdictA-tier. The right answer if you want open-source + terminal-native + model-agnostic.S-tier for speed. When latency is the product, start here.S-tier for text-in-image. Use this for posters, Midjourney for art.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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