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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
Runway
S
Perplexity
S
DeepSeek
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.The pro's AI video tool. Gen-4 is the current bar.AI search done right. Cited answers, not chat theater.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.
Categorycodingvideoresearchchat
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $15-$95/moFree + $20/mo ProFree web + ultra-cheap API (~$0.14/M input tokens)
Best forTeams with GitHub already. Devs who don't want to change IDEs.Marketing video, pitch decks, b-roll, creative shorts.Replacing Google for any question where you want a cited answer in seconds.Developers + cost-conscious builders. Anyone fine with self-hosting.
Strengths
  • 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
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Expensive at scale
  • Still needs post-editing
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
Kai's verdictB-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.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.
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