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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
TaglineOpen-source VS Code agent. Reads + writes + runs.Replit's AI that builds + deploys full apps on their platform.
CategoryCodingCoding
PricingFree (open source) + your API costs$10-$25/mo Core/Teams
Best forVS Code users who want agentic coding without changing IDEs.Teachers, students, prototypers, hackathon builders.
Strengths
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Full-stack + DB + auth + deploy in one environment
  • Great for teaching/learning
  • Runs everything in-browser
Weaknesses
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Locked into Replit hosting
  • Less code quality than dedicated IDEs
Kai's verdictA-tier. Best free agentic option in VS Code. Use with Claude for best results.A-tier. Best for teaching a kid to code in 2026.
LinkOpen →Open →