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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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Devin
A
Hex
A
Groq
S
Runway
S
TaglineCognition Labs' autonomous coding engineer.Modern data notebook with Magic AI assistant.The fastest AI inference in the world. Crazy low latency.The pro's AI video tool. Gen-4 is the current bar.
CategoryAgentsDataDev PlatformVideo
Pricing$500/moFree + $28+/user/moFree tier + pay-as-you-go APIFree + $15-$95/mo
Best forEngineering teams offloading tickets. Ops/platform work.Data teams at startups + enterprises.Developers who need sub-100ms LLM responses.Marketing video, pitch decks, b-roll, creative shorts.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • SQL + Python + no-code in one notebook
  • Magic AI writes queries + viz for you
  • Team-grade collaboration
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Overkill for casual users
  • Enterprise pricing
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Expensive at scale
  • Still needs post-editing
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier for data teams. S-tier if you already live in SQL + Python.S-tier for speed. When latency is the product, start here.S-tier. Market leader with reason. Start here for serious video.
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