Model router
A layer that chooses which model answers a given request, from signals known before the model is called.
By Lattice editorial · Entry last reviewed · method
What it implies
The workable signals are explicit task identity, user tier, and deterministic input properties. The signal that does not work is a subjective read of how hard the prompt looks — that is where the escalation trap begins, where failures cluster on genuinely hard requests and you pay twice for exactly the cases the big model was needed for.