Gateways & routers
OpenRouter
A single API and single bill across models from most major providers, with automatic fallback when one is down.
- Category
- Gateways & routers
- Pricing
- Usage-based
- Runs
- Hosted
- Interface
- API
- Source
- Proprietary
What OpenRouter is
OpenRouter exposes one OpenAI-compatible endpoint that fronts models from most major providers, so changing model is changing a string. It consolidates billing into one account, which removes the work of holding credit with several vendors at once, and can fall back to another provider when one is failing.
Best for
Trying many models quickly, or shipping something that must keep working when a single provider degrades.
Consider something else if
It is a hosted service in your critical path, and the normalised interface can lag provider-specific features like caching and structured outputs.
OpenRouter alternatives
The closest options in gateways & routers, on the axes that actually separate them.
| Tool | Best for | Pricing | Runs |
|---|---|---|---|
| OpenRouter | Trying many models quickly, or shipping something that must keep working when a single provider degrades. | Usage-based | Hosted |
| LiteLLMopen source | Teams that want gateway behaviour — budgets, key management, failover — without adding a third-party service to the request path. | Open source | Hosted or self-hosted |
| Portkeyopen source | Teams that want routing and request-level tracing from one system instead of integrating a gateway and an observability tool separately. | Free tier | Hosted or self-hosted |
| Cloudflare AI Gateway | Adding caching and cost visibility to calls you already make, especially if you are on Cloudflare already. | Free tier | Hosted |
Choosing within gateways & routers
Hosted or self-hosted
A hosted gateway is another service in your critical path — when it is down, you are down. A self-hosted proxy keeps the failure domain yours but is now yours to run. Some options offer both; pick before you build around one.
What it costs you in latency
Every gateway adds a network hop. That is usually single-digit milliseconds and irrelevant next to generation time, but it matters for high-volume classification where the model call itself is short.
Questions
What is OpenRouter?
OpenRouter exposes one OpenAI-compatible endpoint that fronts models from most major providers, so changing model is changing a string. It consolidates billing into one account, which removes the work of holding credit with several vendors at once, and can fall back to another provider when one is failing. It is a commercial product and hosted.
What are the alternatives to OpenRouter?
The closest alternatives are LiteLLM, Portkey, Cloudflare AI Gateway. They sit in the same category — gateways & routers — and differ mainly on hosting model, pricing shape, and how much they abstract away.
Is OpenRouter the right choice?
Trying many models quickly, or shipping something that must keep working when a single provider degrades. The main caveat: It is a hosted service in your critical path, and the normalised interface can lag provider-specific features like caching and structured outputs.
Whatever you build on, the model is the line item that scales. See what each one costs per million tokens, or price your own workload.