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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
Sora
A
Groq
S
Perplexity
S
TaglineCognition Labs' autonomous coding engineer.OpenAI's video model. Long clips, cinematic quality.The fastest AI inference in the world. Crazy low latency.AI search done right. Cited answers, not chat theater.
CategoryAgentsVideoDev PlatformResearch
Pricing$500/moIncluded with ChatGPT Plus/ProFree tier + pay-as-you-go APIFree + $20/mo Pro
Best forEngineering teams offloading tickets. Ops/platform work.ChatGPT subscribers experimenting with cinematic shots.Developers who need sub-100ms LLM responses.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for speed. When latency is the product, start here.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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