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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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DeepSeek
S
DALL-E 3
B
ChatGPT Operator
B
Lex
A
TaglineChinese open-weight powerhouse. Crazy cheap, genuinely smart.OpenAI's image model. Built into ChatGPT Plus.OpenAI's browser agent. Clicks and types on websites for you.Google Docs with an AI collaborator baked in.
CategoryChatbotsImageAgentsWriting
PricingFree web + ultra-cheap API (~$0.14/M input tokens)Included with ChatGPT Plus $20/moIncluded with ChatGPT Pro $200/moFree + $12/mo
Best forDevelopers + cost-conscious builders. Anyone fine with self-hosting.ChatGPT Plus users who want images without paying extra.Power users willing to pay $200/mo for a browser bot.Essays, long-form drafts, thinking on the page.
Strengths
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • 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
Weaknesses
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
Kai's verdictS-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.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.
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