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OpenRouter
A single API for models from multiple providers, with routing and fallback options.
- One endpoint for several model providers
- Routing, provider preferences, and fallbacks
- Model usage and platform fees affect the total cost
OpenRouter connects an application to models served by multiple providers. Its application programming interface (API) works with common OpenAI-compatible clients, reducing the integration work needed to try another model.
Choosing a route
- Select a particular model or use automatic routing.
- Set provider preferences for the chosen model.
- Configure fallbacks when a provider cannot handle a request.
Available features, data policies, and limits depend on the model and serving provider. For a direct relationship with one inference provider, compare Together AI or Fireworks AI .
How pricing works
Paid model calls consume usage credits at the listed model rates. Platform fees and account options also affect spending. Free models have their own limits; they do not provide the same capacity as paid routes.