OpenRouter with 9Router: connect or use directly

OpenRouter is a hosted API service; 9Router is a gateway you run. You can connect a client directly to OpenRouter or add OpenRouter as a provider behind 9Router. Choose the extra local layer when it solves a specific need, such as sharing one client endpoint across several configured provider connections.

If you searched “open router” and want a first API request without a local gateway, use the separate Open Router quickstart. This page covers the architectural choice and the connection between the two services.

Choose the shorter route that fits your task

Setup	Useful when	What you manage
Client calls OpenRouter directly	You want one hosted API and its model catalog	Client configuration, OpenRouter key, usage
Client calls 9Router, which calls OpenRouter	You also need other local provider connections or local combo rules	Both keys, local process, route mapping, upstream usage
Client calls 9Router with other providers	You do not need OpenRouter for the selected route	Local gateway and those providers’ accounts

Adding a gateway creates another place to configure and debug. It does not create provider credits, remove quota limits, or guarantee that every optional API feature survives translation. Start with a direct, small request if you need to establish whether the hosted account works.

Keep the two API keys separate

Create an OpenRouter key in your own account and use it for the upstream provider connection in 9Router. Then configure the client with the local router endpoint and its router-issued key. Do not paste a local router key into OpenRouter’s account settings or expect an OpenRouter key to authenticate automatically to a protected local gateway.

The documented direct OpenRouter API base is https://openrouter.ai/api/v1. Your client may instead use http://localhost:20128/v1 when 9Router sits in front. Record which URL the client currently calls so a debugging request reaches the intended layer.

Discover the model name at the correct layer

OpenRouter model identifiers and router-exposed identifiers need not be identical. Check the hosted catalog for the upstream model, then inspect /v1/models on your 9Router instance for the identifier the client should request.

Begin with one explicit model rather than automatic routing plus a local fallback combo. Send the same short prompt through the intended route. Add streaming and tools after the baseline works, checking the corresponding request in both the router and hosted activity records where available.

Understand billing and data handling

A local 9Router process does not make hosted inference local. Prompts sent through OpenRouter are handled according to OpenRouter and the selected provider’s current policies. Review model/provider options and account controls before sending sensitive content.

Free models or trial allowances have their own eligibility and limits. A free software gateway cannot convert a paid route into free inference. Read the current model page and account usage view rather than relying on a provider count or price copied into a tutorial.

Avoid overlapping fallback rules during diagnosis

A local combo and hosted provider routing can both influence where a request goes. That may be useful in a mature setup, but it makes a first failure harder to explain. Establish one local route, then add one routing rule at a time and inspect the actual provider used.

For a 401, identify whether the error came from local authentication or OpenRouter. For a 429, check the hosted account and selected model limits. For a 400, compare a minimal direct request with the local-gateway request; incompatible parameters or API shapes can fail even with valid credentials.

Should you keep 9Router in the path?

Keep it when its provider management, client compatibility, or local routing rules are useful to your workflow. If all you need is a hosted OpenRouter model and your client already supports it, direct configuration is easier to maintain. Use the routing comparison to evaluate the maintenance tradeoff, then test the smallest real task your client needs.