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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
Claude Code
S
ChatGPT
S
Flux (Black Forest Labs)
A
TaglineOne API, every model. Pay-as-you-go, no subscriptions.Anthropic's CLI agent. Opus-powered, operates on your repo directly.The default. Strongest ecosystem + best multimodal breadth.Open weights + strong photorealism. The open-source answer.
CategoryDev PlatformCodingChatbotsImage
PricingPay per token — model-dependentPart of Claude Pro/Max/Team plansFree + $20/mo Plus + $200/mo ProAPI + open weights (Schnell is Apache 2.0)
Best forDevelopers experimenting across models. Apps that want fallback logic.Developers who want an agent, not autocomplete. Large refactors, tests, docs.General use, voice chat, image generation, first-time AI users.Developers + power users who want control and privacy.
Strengths
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Great voice mode
  • Huge plugin/custom GPT ecosystem
  • Strong image generation (DALL-E built in)
  • Code Interpreter
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
Weaknesses
  • Slight markup over direct API
  • Some provider features not exposed
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Reasoning quality varies by mode
  • Can be verbose
  • Confabulates on niche facts
  • Harder to use than hosted tools
  • Needs infra
Kai's verdictS-tier for model-shopping. I use this for every prototype before committing.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it.A-tier. S-tier if you self-host. The reason open-source image gen matters.
LinkOpen →Open →Open →Open →