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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
Aider
A
Kling
A
Sudowrite
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Terminal-based AI pair programmer. Git-aware, model-flexible.Kuaishou's video model. The surprise standout.AI writing tool built specifically for fiction writers.
Categorycodingcodingvideowriting
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree (open source) + whatever API you useCredit-based, free trial$19-$59/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Developers who want open-source tooling with full control.Anyone who wants top-tier video quality for less.Novelists, screenwriters, fiction short-form writers.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • 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
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • UX is rough for English speakers
  • Queue times
  • 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.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.
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