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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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GitHub Copilot
B
Cursor
S
Perplexity
S
Sudowrite
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.VS Code fork that made AI coding actually work.AI search done right. Cited answers, not chat theater.AI writing tool built specifically for fiction writers.
Categorycodingcodingresearchwriting
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $20/mo Pro + $40/mo BusinessFree + $20/mo Pro$19-$59/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Developers. Non-developers who want to ship working code.Replacing Google for any question where you want a cited answer in seconds.Novelists, screenwriters, fiction short-form writers.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Pricey for casual use
  • Fiction-only focus — not for business writing
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.
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