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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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Flux (Black Forest Labs)
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Leonardo.ai
A
TaglineVS Code fork that made AI coding actually work.Open weights + strong photorealism. The open-source answer.Gamer + creator image gen with model fine-tuning built in.
Categorycodingimageimage
PricingFree + $20/mo Pro + $40/mo BusinessAPI + open weights (Schnell is Apache 2.0)Free + $12-$60/mo
Best forDevelopers. Non-developers who want to ship working code.Developers + power users who want control and privacy.Indie game devs, illustrators, anyone training custom style models.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Harder to use than hosted tools
  • Needs infra
  • General output behind Midjourney
  • Can be overwhelming
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. S-tier if you self-host. The reason open-source image gen matters.A-tier for creators training custom looks. B-tier for general use.
LinkOpen →Open →Open →