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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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Groq
S
Cursor
S
Perplexity
S
Copy.ai
A
TaglineThe fastest AI inference in the world. Crazy low latency.VS Code fork that made AI coding actually work.AI search done right. Cited answers, not chat theater.AI GTM platform. Workflows for sales + marketing ops.
CategoryDev PlatformCodingResearchMarketing
PricingFree tier + pay-as-you-go APIFree + $20/mo Pro + $40/mo BusinessFree + $20/mo ProFree + $49-$249/mo
Best forDevelopers who need sub-100ms LLM responses.Developers. Non-developers who want to ship working code.Replacing Google for any question where you want a cited answer in seconds.RevOps + marketing ops automating repetitive tasks.
Strengths
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Workflow builder for GTM automations
  • CRM enrichment + outbound sequences
  • Scales better than ad-hoc prompts
Weaknesses
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Overlaps with general chatbots
  • Workflow setup takes time
Kai's verdictS-tier for speed. When latency is the product, start here.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier for ops automation. B-tier for simple copy (use Claude).
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