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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
Rows
A
Hume AI
A
Fireflies
A
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Spreadsheets with AI + live integrations baked in.Voice AI that reads + expresses emotion.Sales-focused meeting AI with CRM integration.
CategoryCodingDataVoiceMeetings
PricingFree + $15/mo ProFree + $19-$89/user/moFree tier + pay-as-you-goFree + $10-$19/user/mo
Best forDevelopers who want Cursor-like power for less money.Ops teams, marketers, anyone building dashboards from multiple sources.Therapy apps, customer service, any voice agent where emotion matters.Sales teams, customer success, anyone running many discovery calls.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Good CRM integrations (Salesforce, HubSpot)
  • Talk-time + sentiment analytics
  • Call scoring
Weaknesses
  • Smaller community
  • Model selection more limited
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Niche use case
  • Pricing ramps fast
  • Bot-joins (intrusive)
  • Gets expensive at team scale
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier in its niche. The only one that actually gets emotion right.A-tier for sales teams. B-tier for solo users.
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