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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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Chatbots
Research
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Image
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Agents
Dev Platform
Data
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Ideogram
S
Claude Agent SDK
S
Lex
A
Perplexity
S
TaglineThe one that actually gets text in images right.Anthropic's SDK for building your own agents on Claude.Google Docs with an AI collaborator baked in.AI search done right. Cited answers, not chat theater.
CategoryImageAgentsWritingResearch
PricingFree + $8/mo + $20/mo + $60/moAPI usage + SDK is freeFree + $12/moFree + $20/mo Pro
Best forAnything with text — posters, ads, album covers, slide decks.Developers building custom agents for their own company/product.Essays, long-form drafts, thinking on the page.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • 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
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Developer-only
  • You build the UI
  • 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 text-in-image. Use this for posters, Midjourney for art.S-tier for builders. The right primitives. What Kai is built on under the hood.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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