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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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Flux (Black Forest Labs)
A
Windsurf
A
Rows
A
TaglineOpen weights + strong photorealism. The open-source answer.Codeium's agentic IDE. Cascade agent + strong free tier.Spreadsheets with AI + live integrations baked in.
CategoryImageCodingData
PricingAPI + open weights (Schnell is Apache 2.0)Free + $15/mo ProFree + $19-$89/user/mo
Best forDevelopers + power users who want control and privacy.Developers who want Cursor-like power for less money.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • 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
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Smaller community
  • Model selection more limited
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictA-tier. S-tier if you self-host. The reason open-source image gen matters.A-tier. Close second to Cursor. If $5/mo matters, start here.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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