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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
Groq
S
Perplexity
S
DALL-E 3
B
TaglineCognition Labs' autonomous coding engineer.The fastest AI inference in the world. Crazy low latency.AI search done right. Cited answers, not chat theater.OpenAI's image model. Built into ChatGPT Plus.
CategoryAgentsDev PlatformResearchImage
Pricing$500/moFree tier + pay-as-you-go APIFree + $20/mo ProIncluded with ChatGPT Plus $20/mo
Best forEngineering teams offloading tickets. Ops/platform work.Developers who need sub-100ms LLM responses.Replacing Google for any question where you want a cited answer in seconds.ChatGPT Plus users who want images without paying extra.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • 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
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.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.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.
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