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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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S
Aider
A
Flux (Black Forest Labs)
A
TaglineThe one that actually gets text in images right.Terminal-based AI pair programmer. Git-aware, model-flexible.Open weights + strong photorealism. The open-source answer.
CategoryImageCodingImage
PricingFree + $8/mo + $20/mo + $60/moFree (open source) + whatever API you useAPI + open weights (Schnell is Apache 2.0)
Best forAnything with text — posters, ads, album covers, slide decks.Developers who want open-source tooling with full control.Developers + power users who want control and privacy.
Strengths
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
Weaknesses
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Harder to use than hosted tools
  • Needs infra
Kai's verdictS-tier for text-in-image. Use this for posters, Midjourney for art.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. S-tier if you self-host. The reason open-source image gen matters.
LinkOpen →Open →Open →