OpenRouter: One API, All Models

OpenRouter provides unified access to 100+ models from all major providers. One API key, one billing account.

Why OpenRouter?

• Model Variety — Claude, GPT-4, Llama, Gemini, and more
• Unified Billing — One account for all providers
• Auto Fallbacks — Switch models if one is down
• Cost Tracking — Detailed usage analytics

Setup

{
  "provider": "openrouter",
  "model": "anthropic/claude-sonnet-4"
}

Get your API key at openrouter.ai.

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