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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
Gemini
A
Hume AI
A
Fireflies
A
TaglineRun any open-source AI model with an API call.Google's answer. Best integrated with Workspace + free for a lot.Voice AI that reads + expresses emotion.Sales-focused meeting AI with CRM integration.
CategoryDev PlatformChatbotsVoiceMeetings
PricingPay per second of computeFree + $20/mo Advanced (bundled with 2TB Drive)Free tier + pay-as-you-goFree + $10-$19/user/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Anyone already on Google, research tasks, summarizing long documents.Therapy apps, customer service, any voice agent where emotion matters.Sales teams, customer success, anyone running many discovery calls.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Good CRM integrations (Salesforce, HubSpot)
  • Talk-time + sentiment analytics
  • Call scoring
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Niche use case
  • Pricing ramps fast
  • Bot-joins (intrusive)
  • Gets expensive at team scale
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.A-tier in its niche. The only one that actually gets emotion right.A-tier for sales teams. B-tier for solo users.
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