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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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Bolt.new (StackBlitz)
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Manus
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TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.VS Code fork that made AI coding actually work.Prompt to deployed full-stack app in the browser.Autonomous AI agent that actually finishes tasks.
CategoryCodingCodingCodingAgents
PricingFree (open source) + whatever API you useFree + $20/mo Pro + $40/mo BusinessFree + $20-$200/moFree tier + $39-$199/mo
Best forDevelopers who want open-source tooling with full control.Developers. Non-developers who want to ship working code.PMs, founders, non-devs shipping MVPs.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Full-stack generation + live preview
  • Deploy to Netlify in one click
  • Works in-browser — no install
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
Weaknesses
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Quality ceiling for complex apps
  • Can get into loops for non-trivial bugs
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
Kai's verdictA-tier. The right answer if you want open-source + terminal-native + model-agnostic.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Best for fast prototypes. Competitive with Lovable — try both.S-tier in the agent category. The first one I'd give to a non-technical friend.
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