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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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Groq
S
Grok
A
Devin
A
ChatGPT Operator
B
TaglineThe fastest AI inference in the world. Crazy low latency.xAI's chatbot. Real-time X/Twitter data + fewer refusals.Cognition Labs' autonomous coding engineer.OpenAI's browser agent. Clicks and types on websites for you.
CategoryDev PlatformChatbotsAgentsAgents
PricingFree tier + pay-as-you-go APIFree + $30/mo SuperGrok + included with X Premium$500/moIncluded with ChatGPT Pro $200/mo
Best forDevelopers who need sub-100ms LLM responses.Breaking news, live event tracking, users already on X.Engineering teams offloading tickets. Ops/platform work.Power users willing to pay $200/mo for a browser bot.
Strengths
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Live access to X posts for real-time events
  • Less restrictive on edgy questions
  • Fast inference on Grok-3 and up
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
Weaknesses
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Writing quality trails Claude/ChatGPT
  • Political bias debates
  • Ecosystem is just X
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
Kai's verdictS-tier for speed. When latency is the product, start here.A-tier for real-time. B-tier for everything else. Worth checking when news breaks.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.B-tier. Still early. Manus is more flexible for less money.
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