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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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TaglineSpreadsheets with AI + live integrations baked in.VS Code fork that made AI coding actually work.The fastest AI inference in the world. Crazy low latency.Khan Academy's AI tutor. Socratic method, built for learning.
CategoryDataCodingDev PlatformEducation
PricingFree + $19-$89/user/moFree + $20/mo Pro + $40/mo BusinessFree tier + pay-as-you-go API$4/mo (free for teachers)
Best forOps teams, marketers, anyone building dashboards from multiple sources.Developers. Non-developers who want to ship working code.Developers who need sub-100ms LLM responses.Students K-12. Parents helping with homework. Teachers prepping lessons.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Socratic — doesn't give answers, asks questions
  • Trusted by schools + parents
  • Integrated with Khan Academy curriculum
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • K-12 focus (not deep for adults)
  • Slower than general chatbots
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for speed. When latency is the product, start here.S-tier for kids learning. The tutoring UX is legit — not a generic chatbot dressed up.
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