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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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Agents
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Image
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Dev Platform
Data
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Education
Groq
S
Lex
A
DALL-E 3
B
Perplexity
S
TaglineThe fastest AI inference in the world. Crazy low latency.Google Docs with an AI collaborator baked in.OpenAI's image model. Built into ChatGPT Plus.AI search done right. Cited answers, not chat theater.
CategoryDev PlatformWritingImageResearch
PricingFree tier + pay-as-you-go APIFree + $12/moIncluded with ChatGPT Plus $20/moFree + $20/mo Pro
Best forDevelopers who need sub-100ms LLM responses.Essays, long-form drafts, thinking on the page.ChatGPT Plus users who want images without paying extra.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
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • 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
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for speed. When latency is the product, start here.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.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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