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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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Dev Platform
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Voice
Video
Audio
Research
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Image
Meetings
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Rows
A
Hume AI
A
Genspark
A
Replicate
S
TaglineSpreadsheets with AI + live integrations baked in.Voice AI that reads + expresses emotion.AI agent for deep search. Generates Sparkpages — full mini-reports.Run any open-source AI model with an API call.
CategoryDataVoiceResearchDev Platform
PricingFree + $19-$89/user/moFree tier + pay-as-you-goFree + $25/mo PlusPay per second of compute
Best forOps teams, marketers, anyone building dashboards from multiple sources.Therapy apps, customer service, any voice agent where emotion matters.Travel planning, shopping comparisons, deep research where you want an artifact back.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Niche use case
  • Pricing ramps fast
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier in its niche. The only one that actually gets emotion right.A-tier. Bet on this one — the Sparkpage format is genuinely new.S-tier for open-source model APIs. The default in this space.
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