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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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GitHub Copilot
B
MagicSchool
S
Claude
S
Replicate
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI platform built for teachers. Lesson plans + IEPs + admin.Anthropic's flagship — best reasoning + longest useful context.Run any open-source AI model with an API call.
CategoryCodingEducationChatbotsDev Platform
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $100/yr Plus + school plansFree + $20/mo Pro + team/enterprisePay per second of compute
Best forTeams with GitHub already. Devs who don't want to change IDEs.Teachers prepping materials. School districts.Long writing, code, careful thinking, documents over 50 pages.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • 60+ teacher-specific tools
  • Generous free tier
  • FERPA + COPPA compliant for schools
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Teacher-only focus
  • Less useful for students
  • Image generation is weak
  • No native web search on all tiers
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for teachers. If you teach K-12, start here this week.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.S-tier for open-source model APIs. The default in this space.
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