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S
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Devin
A
TaglineAI search done right. Cited answers, not chat theater.The fastest AI inference in the world. Crazy low latency.Cognition Labs' autonomous coding engineer.
CategoryResearchDev PlatformAgents
PricingFree + $20/mo ProFree tier + pay-as-you-go API$500/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Developers who need sub-100ms LLM responses.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for speed. When latency is the product, start here.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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