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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
Sudowrite
S
Gemini
A
Perplexity
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI writing tool built specifically for fiction writers.Google's answer. Best integrated with Workspace + free for a lot.AI search done right. Cited answers, not chat theater.
Categorycodingwritingchatresearch
PricingFree (limited) + $10/mo Pro + $19/mo Business$19-$59/moFree + $20/mo Advanced (bundled with 2TB Drive)Free + $20/mo Pro
Best forTeams with GitHub already. Devs who don't want to change IDEs.Novelists, screenwriters, fiction short-form writers.Anyone already on Google, research tasks, summarizing long documents.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Pricey for casual use
  • Fiction-only focus — not for business writing
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.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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