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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
Rows
A
GitHub Copilot
B
OpenRouter
S
TaglineGamer + creator image gen with model fine-tuning built in.Spreadsheets with AI + live integrations baked in.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.One API, every model. Pay-as-you-go, no subscriptions.
Categoryimagedatacodingdev platform
PricingFree + $12-$60/moFree + $19-$89/user/moFree (limited) + $10/mo Pro + $19/mo BusinessPay per token — model-dependent
Best forIndie game devs, illustrators, anyone training custom style models.Ops teams, marketers, anyone building dashboards from multiple sources.Teams with GitHub already. Devs who don't want to change IDEs.Developers experimenting across models. Apps that want fallback logic.
Strengths
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
Weaknesses
  • General output behind Midjourney
  • Can be overwhelming
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Slight markup over direct API
  • Some provider features not exposed
Kai's verdictA-tier for creators training custom looks. B-tier for general use.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for model-shopping. I use this for every prototype before committing.
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