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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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S
Grok
A
ChatGPT Operator
B
Lex
A
TaglineRun any open-source AI model with an API call.xAI's chatbot. Real-time X/Twitter data + fewer refusals.OpenAI's browser agent. Clicks and types on websites for you.Google Docs with an AI collaborator baked in.
Categorydev platformchatagentswriting
PricingPay per second of computeFree + $30/mo SuperGrok + included with X PremiumIncluded with ChatGPT Pro $200/moFree + $12/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Breaking news, live event tracking, users already on X.Power users willing to pay $200/mo for a browser bot.Essays, long-form drafts, thinking on the page.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Live access to X posts for real-time events
  • Less restrictive on edgy questions
  • Fast inference on Grok-3 and up
  • 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
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Writing quality trails Claude/ChatGPT
  • Political bias debates
  • Ecosystem is just X
  • 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 open-source model APIs. The default in this space.A-tier for real-time. B-tier for everything else. Worth checking when news breaks.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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