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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
GitHub Copilot
B
Rows
A
Perplexity
S
TaglineSEO-first AI writer. Optimized for ranking content.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Spreadsheets with AI + live integrations baked in.AI search done right. Cited answers, not chat theater.
Categorymarketingcodingdataresearch
PricingFree + $15-$99/moFree (limited) + $10/mo Pro + $19/mo BusinessFree + $19-$89/user/moFree + $20/mo Pro
Best forContent marketers churning out SEO articles.Teams with GitHub already. Devs who don't want to change IDEs.Ops teams, marketers, anyone building dashboards from multiple sources.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • SEO built-in (Surfer integration)
  • Article generator for long-form
  • Chatsonic for research
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictB-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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