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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
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Groq
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Sora
A
TaglineCognition Labs' autonomous coding engineer.VS Code fork that made AI coding actually work.The fastest AI inference in the world. Crazy low latency.OpenAI's video model. Long clips, cinematic quality.
CategoryAgentsCodingDev PlatformVideo
Pricing$500/moFree + $20/mo Pro + $40/mo BusinessFree tier + pay-as-you-go APIIncluded with ChatGPT Plus/Pro
Best forEngineering teams offloading tickets. Ops/platform work.Developers. Non-developers who want to ship working code.Developers who need sub-100ms LLM responses.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for speed. When latency is the product, start here.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
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