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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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Claude Code
S
MagicSchool
S
GitHub Copilot
B
Duolingo Max
A
TaglineAnthropic's CLI agent. Opus-powered, operates on your repo directly.AI platform built for teachers. Lesson plans + IEPs + admin.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Duolingo + AI. Explain My Answer + Roleplay features.
CategoryCodingEducationCodingEducation
PricingPart of Claude Pro/Max/Team plansFree + $100/yr Plus + school plansFree (limited) + $10/mo Pro + $19/mo Business$30/mo (or ~$168/yr)
Best forDevelopers who want an agent, not autocomplete. Large refactors, tests, docs.Teachers prepping materials. School districts.Teams with GitHub already. Devs who don't want to change IDEs.Language learners who've outgrown basic Duolingo.
Strengths
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • 60+ teacher-specific tools
  • Generous free tier
  • FERPA + COPPA compliant for schools
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Explain My Answer = personal tutor for every mistake
  • Roleplay = real conversation practice
  • Gamification that actually sticks
Weaknesses
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Teacher-only focus
  • Less useful for students
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Pricey vs free Duolingo
  • Conversation AI still stiff sometimes
Kai's verdictS-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for teachers. If you teach K-12, start here this week.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.
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