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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
Flux (Black Forest Labs)
A
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.Open weights + strong photorealism. The open-source answer.
CategoryCodingEducationCodingImage
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $100/yr Plus + school plansFree (open source) + your API costsAPI + open weights (Schnell is Apache 2.0)
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 + power users who want control and privacy.
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
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
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
  • Harder to use than hosted tools
  • Needs infra
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.A-tier. S-tier if you self-host. The reason open-source image gen matters.
LinkOpen →Open →Open →Open →