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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
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TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.The one that actually gets text in images right.Google Docs with an AI collaborator baked in.Run any open-source AI model with an API call.
CategoryCodingImageWritingDev Platform
PricingFree (open source) + whatever API you useFree + $8/mo + $20/mo + $60/moFree + $12/moPay per second of compute
Best forDevelopers who want open-source tooling with full control.Anything with text — posters, ads, album covers, slide decks.Essays, long-form drafts, thinking on the page.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier. The right answer if you want open-source + terminal-native + model-agnostic.S-tier for text-in-image. Use this for posters, Midjourney for art.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for open-source model APIs. The default in this space.
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