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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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Cursor
S
Windsurf
A
Replit Agent
A
Manus
S
TaglineVS Code fork that made AI coding actually work.Codeium's agentic IDE. Cascade agent + strong free tier.Replit's AI that builds + deploys full apps on their platform.Autonomous AI agent that actually finishes tasks.
Categorycodingcodingcodingagents
PricingFree + $20/mo Pro + $40/mo BusinessFree + $15/mo Pro$10-$25/mo Core/TeamsFree tier + $39-$199/mo
Best forDevelopers. Non-developers who want to ship working code.Developers who want Cursor-like power for less money.Teachers, students, prototypers, hackathon builders.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Full-stack + DB + auth + deploy in one environment
  • Great for teaching/learning
  • Runs everything in-browser
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Smaller community
  • Model selection more limited
  • Locked into Replit hosting
  • Less code quality than dedicated IDEs
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Close second to Cursor. If $5/mo matters, start here.A-tier. Best for teaching a kid to code in 2026.S-tier in the agent category. The first one I'd give to a non-technical friend.
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