Factory COO @francesca_lab says the enterprise AI stack is becoming less about picking one best model and more about routing every task to the right one: "We're definitely seeing a model mix. Cost is a big part of the equation. We really want to maximize ROI for our customers, not just maximize token spend." "Open source is picking up a pretty big share. Certain models are good at different use cases. Maybe you're using a different model for code review than you're using for your migration…