multi model

Twenty models of different sizes is a packing problem with a cold-start penalty, and the two pull in opposite directions. What stays resident, what loads on demand, the arithmetic that decides which is which, and the interface that stops every team from asking for a dedicated replica.

Fifty full copies is fifty deployments and is unaffordable. Fifty low-rank adapters over one shared base is one deployment, because an adapter is a tiny fraction of the weights and adapters from different tenants can share a batch. The arithmetic that makes it work and the two limits that decide how far it goes.