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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
DeepSeek
S
Hume AI
A
TaglineAI search done right. Cited answers, not chat theater.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.Voice AI that reads + expresses emotion.
CategoryResearchChatbotsVoice
PricingFree + $20/mo ProFree web + ultra-cheap API (~$0.14/M input tokens)Free tier + pay-as-you-go
Best forReplacing Google for any question where you want a cited answer in seconds.Developers + cost-conscious builders. Anyone fine with self-hosting.Therapy apps, customer service, any voice agent where emotion matters.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Niche use case
  • Pricing ramps fast
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.A-tier in its niche. The only one that actually gets emotion right.
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