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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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Replit Agent
A
Claude Code
S
Perplexity
S
MagicSchool
S
TaglineReplit's AI that builds + deploys full apps on their platform.Anthropic's CLI agent. Opus-powered, operates on your repo directly.AI search done right. Cited answers, not chat theater.AI platform built for teachers. Lesson plans + IEPs + admin.
CategoryCodingCodingResearchEducation
Pricing$10-$25/mo Core/TeamsPart of Claude Pro/Max/Team plansFree + $20/mo ProFree + $100/yr Plus + school plans
Best forTeachers, students, prototypers, hackathon builders.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Replacing Google for any question where you want a cited answer in seconds.Teachers prepping materials. School districts.
Strengths
  • Full-stack + DB + auth + deploy in one environment
  • Great for teaching/learning
  • Runs everything in-browser
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • 60+ teacher-specific tools
  • Generous free tier
  • FERPA + COPPA compliant for schools
Weaknesses
  • Locked into Replit hosting
  • Less code quality than dedicated IDEs
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Teacher-only focus
  • Less useful for students
Kai's verdictA-tier. Best for teaching a kid to code in 2026.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for teachers. If you teach K-12, start here this week.
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