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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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Leonardo.ai
A
Runway
S
Cursor
S
Replit Agent
A
TaglineGamer + creator image gen with model fine-tuning built in.The pro's AI video tool. Gen-4 is the current bar.VS Code fork that made AI coding actually work.Replit's AI that builds + deploys full apps on their platform.
CategoryImageVideoCodingCoding
PricingFree + $12-$60/moFree + $15-$95/moFree + $20/mo Pro + $40/mo Business$10-$25/mo Core/Teams
Best forIndie game devs, illustrators, anyone training custom style models.Marketing video, pitch decks, b-roll, creative shorts.Developers. Non-developers who want to ship working code.Teachers, students, prototypers, hackathon builders.
Strengths
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Full-stack + DB + auth + deploy in one environment
  • Great for teaching/learning
  • Runs everything in-browser
Weaknesses
  • General output behind Midjourney
  • Can be overwhelming
  • Expensive at scale
  • Still needs post-editing
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Locked into Replit hosting
  • Less code quality than dedicated IDEs
Kai's verdictA-tier for creators training custom looks. B-tier for general use.S-tier. Market leader with reason. Start here for serious video.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Best for teaching a kid to code in 2026.
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