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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
Cline
A
OpenRouter
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI platform built for teachers. Lesson plans + IEPs + admin.Open-source VS Code agent. Reads + writes + runs.One API, every model. Pay-as-you-go, no subscriptions.
CategoryCodingEducationCodingDev Platform
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $100/yr Plus + school plansFree (open source) + your API costsPay per token — model-dependent
Best forTeams with GitHub already. Devs who don't want to change IDEs.Teachers prepping materials. School districts.VS Code users who want agentic coding without changing IDEs.Developers experimenting across models. Apps that want fallback logic.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • 60+ teacher-specific tools
  • Generous free tier
  • FERPA + COPPA compliant for schools
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Teacher-only focus
  • Less useful for students
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Slight markup over direct API
  • Some provider features not exposed
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.A-tier. Best free agentic option in VS Code. Use with Claude for best results.S-tier for model-shopping. I use this for every prototype before committing.
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