A model can fail; the client endpoint need not change
Add health checks, failover, and explainable routing to multi-model calls so clients keep using one stable endpoint when a model or upstream fails.
From a single model to a resource pool
An enterprise platform cannot place availability entirely on one model integration. Lumoswitch groups candidate deployments into one model group and performs recovery in order.
Keep it simple for users
Failover is a platform reliability capability, not a call sequence users should have to understand. Users see one model while the platform manages stability behind it.
How to apply it
Administrators connect several models and configure candidate order. Users continue with one model name; Lumoswitch switches deployments in the request path and reconciles usage in the background.
Boundaries
Failover cannot guarantee an upstream is always available or repair a model's output quality. It addresses interruption risk from integration-layer stability, rate limiting, temporary errors, and a single unavailable credential.