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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
Gemini
A
v0
S
Rows
A
TaglineOpen weights + strong photorealism. The open-source answer.Google's answer. Best integrated with Workspace + free for a lot.Vercel's AI-powered UI generator. Prompt to shadcn component.Spreadsheets with AI + live integrations baked in.
CategoryImageChatbotsDesignData
PricingAPI + open weights (Schnell is Apache 2.0)Free + $20/mo Advanced (bundled with 2TB Drive)Free + $20/moFree + $19-$89/user/mo
Best forDevelopers + power users who want control and privacy.Anyone already on Google, research tasks, summarizing long documents.Frontend devs, PMs prototyping UIs, anyone on Next.js.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Best for shadcn stack
  • Iterating can be fiddly
  • 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. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.S-tier. If you're on Vercel/shadcn, this is cheating.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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