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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
Agents
Voice
Video
Audio
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Image
Meetings
Design
Productivity
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Data
Marketing
Education
Replicate
S
Rows
A
Duolingo Max
A
MagicSchool
S
TaglineRun any open-source AI model with an API call.Spreadsheets with AI + live integrations baked in.Duolingo + AI. Explain My Answer + Roleplay features.AI platform built for teachers. Lesson plans + IEPs + admin.
CategoryDev PlatformDataEducationEducation
PricingPay per second of computeFree + $19-$89/user/mo$30/mo (or ~$168/yr)Free + $100/yr Plus + school plans
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Ops teams, marketers, anyone building dashboards from multiple sources.Language learners who've outgrown basic Duolingo.Teachers prepping materials. School districts.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Explain My Answer = personal tutor for every mistake
  • Roleplay = real conversation practice
  • Gamification that actually sticks
  • 60+ teacher-specific tools
  • Generous free tier
  • FERPA + COPPA compliant for schools
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Pricey vs free Duolingo
  • Conversation AI still stiff sometimes
  • Teacher-only focus
  • Less useful for students
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.S-tier for teachers. If you teach K-12, start here this week.
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