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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
OpenRouter
S
Framer
A
Claude Code
S
TaglineOpen weights + strong photorealism. The open-source answer.One API, every model. Pay-as-you-go, no subscriptions.Design + publish sites with AI assists built in.Anthropic's CLI agent. Opus-powered, operates on your repo directly.
CategoryImageDev PlatformDesignCoding
PricingAPI + open weights (Schnell is Apache 2.0)Pay per token — model-dependentFree + $5-$30/moPart of Claude Pro/Max/Team plans
Best forDevelopers + power users who want control and privacy.Developers experimenting across models. Apps that want fallback logic.Designers shipping marketing sites without engineers.Developers who want an agent, not autocomplete. Large refactors, tests, docs.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • AI generates sections + copy + layouts
  • Designer-first publishing (not just templates)
  • Great animations
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Slight markup over direct API
  • Some provider features not exposed
  • Less flexible than raw code
  • Pricing per-site adds up
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
Kai's verdictA-tier. S-tier if you self-host. The reason open-source image gen matters.S-tier for model-shopping. I use this for every prototype before committing.A-tier for designer-led sites. S-tier if animations matter.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.
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