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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
ChatGPT Operator
B
Lex
A
Perplexity
S
TaglineThe fastest AI inference in the world. Crazy low latency.OpenAI's browser agent. Clicks and types on websites for you.Google Docs with an AI collaborator baked in.AI search done right. Cited answers, not chat theater.
CategoryDev PlatformAgentsWritingResearch
PricingFree tier + pay-as-you-go APIIncluded with ChatGPT Pro $200/moFree + $12/moFree + $20/mo Pro
Best forDevelopers who need sub-100ms LLM responses.Power users willing to pay $200/mo for a browser bot.Essays, long-form drafts, thinking on the page.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for speed. When latency is the product, start here.B-tier. Still early. Manus is more flexible for less money.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.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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