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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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Windsurf
A
Manus
S
GitHub Copilot
B
Hume AI
A
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Autonomous AI agent that actually finishes tasks.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Voice AI that reads + expresses emotion.
Categorycodingagentscodingvoice
PricingFree + $15/mo ProFree tier + $39-$199/moFree (limited) + $10/mo Pro + $19/mo BusinessFree tier + pay-as-you-go
Best forDevelopers who want Cursor-like power for less money.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.Teams with GitHub already. Devs who don't want to change IDEs.Therapy apps, customer service, any voice agent where emotion matters.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
Weaknesses
  • Smaller community
  • Model selection more limited
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Niche use case
  • Pricing ramps fast
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier in the agent category. The first one I'd give to a non-technical friend.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier in its niche. The only one that actually gets emotion right.
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