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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
DALL-E 3
B
Rows
A
OpenRouter
S
TaglineOpen weights + strong photorealism. The open-source answer.OpenAI's image model. Built into ChatGPT Plus.Spreadsheets with AI + live integrations baked in.One API, every model. Pay-as-you-go, no subscriptions.
CategoryImageImageDataDev Platform
PricingAPI + open weights (Schnell is Apache 2.0)Included with ChatGPT Plus $20/moFree + $19-$89/user/moPay per token — model-dependent
Best forDevelopers + power users who want control and privacy.ChatGPT Plus users who want images without paying extra.Ops teams, marketers, anyone building dashboards from multiple sources.Developers experimenting across models. Apps that want fallback logic.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Slight markup over direct API
  • Some provider features not exposed
Kai's verdictA-tier. S-tier if you self-host. The reason open-source image gen matters.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for model-shopping. I use this for every prototype before committing.
LinkOpen →Open →Open →Open →