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OpenRouter

Unified API for 200+ LLMs from every major provider

OpenRouter gives you a single OpenAI-compatible endpoint to access 200+ models from OpenAI, Anthropic, Google, Mistral, Meta, and more — with automatic fallbacks and cost optimization.

Details

Auth Type

API Key (Bearer token)

Rate Limit

Model-dependent

Pricing

Pay-per-token per model; free models available

Full Docs

API Key (Bearer token)

1. Go to https://openrouter.ai/settings/keys 2. Create an API key 3. Paste it in the API Key field

Get API Credentials

Getting Started

Try It Instantly

Click "Try It" above to test the API in the playground

Add to Your Agent

Click "Add to Agent" to get your API key and integrate

Common Use Cases

Multi-model routing

Cost optimization

Fallback chains

Model benchmarking

Unified LLM access

💻 Code Examples

Get started quickly with these code examples in your favorite language

curl -X GET \
  'https://www.callio.dev/api/proxy/openrouter/forward?target=https%3A%2F%2Fopenrouter.ai%2Fendpoint' \
  -H 'Authorization: Bearer YOUR_CALLIO_KEY' \
  -H 'Content-Type: application/json'

💡 Tip: Replace YOUR_CALLIO_KEY with your actual Callio API key from the dashboard.

Ready to integrate OpenRouter?

Test endpoints live or generate your API key and start building in minutes

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