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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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Writesonic
B
v0
S
Rows
A
Leonardo.ai
A
TaglineSEO-first AI writer. Optimized for ranking content.Vercel's AI-powered UI generator. Prompt to shadcn component.Spreadsheets with AI + live integrations baked in.Gamer + creator image gen with model fine-tuning built in.
CategoryMarketingDesignDataImage
PricingFree + $15-$99/moFree + $20/moFree + $19-$89/user/moFree + $12-$60/mo
Best forContent marketers churning out SEO articles.Frontend devs, PMs prototyping UIs, anyone on Next.js.Ops teams, marketers, anyone building dashboards from multiple sources.Indie game devs, illustrators, anyone training custom style models.
Strengths
  • SEO built-in (Surfer integration)
  • Article generator for long-form
  • Chatsonic for research
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
Weaknesses
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
  • Best for shadcn stack
  • Iterating can be fiddly
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • General output behind Midjourney
  • Can be overwhelming
Kai's verdictB-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic.S-tier. If you're on Vercel/shadcn, this is cheating.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier for creators training custom looks. B-tier for general use.
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