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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
S
Cursor
S
Groq
S
Perplexity
S
TaglineAnthropic's flagship — best reasoning + longest useful context.VS Code fork that made AI coding actually work.The fastest AI inference in the world. Crazy low latency.AI search done right. Cited answers, not chat theater.
CategoryChatbotsCodingDev PlatformResearch
PricingFree + $20/mo Pro + team/enterpriseFree + $20/mo Pro + $40/mo BusinessFree tier + pay-as-you-go APIFree + $20/mo Pro
Best forLong writing, code, careful thinking, documents over 50 pages.Developers. Non-developers who want to ship working code.Developers who need sub-100ms LLM responses.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Image generation is weak
  • No native web search on all tiers
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for speed. When latency is the product, start here.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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