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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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Cline
A
v0
S
GitHub Copilot
B
Runway
S
TaglineOpen-source VS Code agent. Reads + writes + runs.Vercel's AI-powered UI generator. Prompt to shadcn component.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.The pro's AI video tool. Gen-4 is the current bar.
CategoryCodingDesignCodingVideo
PricingFree (open source) + your API costsFree + $20/moFree (limited) + $10/mo Pro + $19/mo BusinessFree + $15-$95/mo
Best forVS Code users who want agentic coding without changing IDEs.Frontend devs, PMs prototyping UIs, anyone on Next.js.Teams with GitHub already. Devs who don't want to change IDEs.Marketing video, pitch decks, b-roll, creative shorts.
Strengths
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
Weaknesses
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Best for shadcn stack
  • Iterating can be fiddly
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Expensive at scale
  • Still needs post-editing
Kai's verdictA-tier. Best free agentic option in VS Code. Use with Claude for best results.S-tier. If you're on Vercel/shadcn, this is cheating.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier. Market leader with reason. Start here for serious video.
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