A system that gives different AI models different jobs in one workflow.
It is like a school relay team. You would not make the shot-put kid run every lap.
It picks a model for each job. It also checks the handoffs. Agents and office tools use it for bigger tasks.
Routing
A Multi-model Workflow uses Routing to pick a model for each job.
Orchestration
Orchestration sets the order and handoffs between the models.
Agent
An Agent can use different models for parts of a hard task.