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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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Dev Platform
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Leonardo.ai
A
OpenRouter
S
Writesonic
B
Rows
A
TaglineGamer + creator image gen with model fine-tuning built in.One API, every model. Pay-as-you-go, no subscriptions.SEO-first AI writer. Optimized for ranking content.Spreadsheets with AI + live integrations baked in.
CategoryImageDev PlatformMarketingData
PricingFree + $12-$60/moPay per token — model-dependentFree + $15-$99/moFree + $19-$89/user/mo
Best forIndie game devs, illustrators, anyone training custom style models.Developers experimenting across models. Apps that want fallback logic.Content marketers churning out SEO articles.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • SEO built-in (Surfer integration)
  • Article generator for long-form
  • Chatsonic for research
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • General output behind Midjourney
  • Can be overwhelming
  • Slight markup over direct API
  • Some provider features not exposed
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictA-tier for creators training custom looks. B-tier for general use.S-tier for model-shopping. I use this for every prototype before committing.B-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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