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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
Lex
A
Replicate
S
Ideogram
S
TaglineAI search done right. Cited answers, not chat theater.Google Docs with an AI collaborator baked in.Run any open-source AI model with an API call.The one that actually gets text in images right.
Categoryresearchwritingdev platformimage
PricingFree + $20/mo ProFree + $12/moPay per second of computeFree + $8/mo + $20/mo + $60/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Essays, long-form drafts, thinking on the page.Developers using open-source models (Flux, SDXL, Whisper, etc).Anything with text — posters, ads, album covers, slide decks.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Aesthetic ceiling below Midjourney
  • Less style variety
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for open-source model APIs. The default in this space.S-tier for text-in-image. Use this for posters, Midjourney for art.
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