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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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Claude Code
S
Lex
A
Perplexity
S
Groq
S
TaglineAnthropic's CLI agent. Opus-powered, operates on your repo directly.Google Docs with an AI collaborator baked in.AI search done right. Cited answers, not chat theater.The fastest AI inference in the world. Crazy low latency.
CategoryCodingWritingResearchDev Platform
PricingPart of Claude Pro/Max/Team plansFree + $12/moFree + $20/mo ProFree tier + pay-as-you-go API
Best forDevelopers who want an agent, not autocomplete. Large refactors, tests, docs.Essays, long-form drafts, thinking on the page.Replacing Google for any question where you want a cited answer in seconds.Developers who need sub-100ms LLM responses.
Strengths
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • 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
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
Weaknesses
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
Kai's verdictS-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.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.S-tier for speed. When latency is the product, start here.
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