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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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OpenRouter
S
Cline
A
DALL-E 3
B
Replicate
S
TaglineOne API, every model. Pay-as-you-go, no subscriptions.Open-source VS Code agent. Reads + writes + runs.OpenAI's image model. Built into ChatGPT Plus.Run any open-source AI model with an API call.
CategoryDev PlatformCodingImageDev Platform
PricingPay per token — model-dependentFree (open source) + your API costsIncluded with ChatGPT Plus $20/moPay per second of compute
Best forDevelopers experimenting across models. Apps that want fallback logic.VS Code users who want agentic coding without changing IDEs.ChatGPT Plus users who want images without paying extra.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Slight markup over direct API
  • Some provider features not exposed
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictS-tier for model-shopping. I use this for every prototype before committing.A-tier. Best free agentic option in VS Code. Use with Claude for best results.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.S-tier for open-source model APIs. The default in this space.
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