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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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Perplexity
S
Replicate
S
DALL-E 3
B
TaglineAI search done right. Cited answers, not chat theater.Run any open-source AI model with an API call.OpenAI's image model. Built into ChatGPT Plus.
Categoryresearchdev platformimage
PricingFree + $20/mo ProPay per second of computeIncluded with ChatGPT Plus $20/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Developers using open-source models (Flux, SDXL, Whisper, etc).ChatGPT Plus users who want images without paying extra.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
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 open-source model APIs. The default in this space.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.
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