Sequential Routers

Learn how to configure routers with routing rules, filter conditions, and fallback destinations.

Sequential routers act as fallbacks. If the first model in the sequence fails to provide a response, the next model defined is called.

This approach is particularly helpful to take advantage of free models across many providers.

Build sequential router for free models from OpenRouter, Nvidia and Kilo Code

Building a router that send requests across all available free models is a low-friction way to get to know the routing platform. This router will use all the free models in the specified order. If one of the models returns an error, the router will use the next model.

Create a new router

Head to https://www.narev.ai/router and click on Create.

Narev platform with router view and Create button magnified

Select router type

Select the sequential fallback to create router that uses the models in the order you defined.

Narev platform dialog with sequential fallback highlighted

Select the free model template

Go to router Settings and select the Free model template

Narev router setup page with Free Model template annotated

Reorder and delete fallbacks

The router will execute through models from top to bottom. If a model is not available

Narev router fallbacks annotated highlighting reordering of variants

Use the router in your application

You need router URL and the API key to now use the fallbacks?

Narev router overview annotated highlighting the router URL and the API key management

Filter RoutersRouting with the API

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