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OpenRouter
S
Claude
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A
TaglineRun any open-source AI model with an API call.One API, every model. Pay-as-you-go, no subscriptions.Anthropic's flagship — best reasoning + longest useful context.Spreadsheets with AI + live integrations baked in.
CategoryDev PlatformDev PlatformChatbotsData
PricingPay per second of computePay per token — model-dependentFree + $20/mo Pro + team/enterpriseFree + $19-$89/user/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers experimenting across models. Apps that want fallback logic.Long writing, code, careful thinking, documents over 50 pages.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Slight markup over direct API
  • Some provider features not exposed
  • Image generation is weak
  • No native web search on all tiers
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for model-shopping. I use this for every prototype before committing.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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