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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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Cursor
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OpenRouter
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Hume AI
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Perplexity
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TaglineVS Code fork that made AI coding actually work.One API, every model. Pay-as-you-go, no subscriptions.Voice AI that reads + expresses emotion.AI search done right. Cited answers, not chat theater.
CategoryCodingDev PlatformVoiceResearch
PricingFree + $20/mo Pro + $40/mo BusinessPay per token — model-dependentFree tier + pay-as-you-goFree + $20/mo Pro
Best forDevelopers. Non-developers who want to ship working code.Developers experimenting across models. Apps that want fallback logic.Therapy apps, customer service, any voice agent where emotion matters.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Slight markup over direct API
  • Some provider features not exposed
  • Niche use case
  • Pricing ramps fast
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for model-shopping. I use this for every prototype before committing.A-tier in its niche. The only one that actually gets emotion right.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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