Summary Multi-tenant GPU clusters let AI-native companies share compute capacity across teams without sacrificing isolation or control. The right architecture pools GPUs at the infrastructure layer while giving each team dedicated nodes, storage, and self-serve scheduling, eliminating idle capacity waste without the politics of truly shared infrastructure. This guide covers the core design principles, common failure modes, and how platforms like Together AI implement multi-tenancy in practice. Why multi-tenant GPU cluster design is a core infrastructure problem for AI-native companies AI-native companies scale faster than their infrastructure strategies can keep up with. Every new team spins up new model experiments, training runs, and demands on shared compute. The result is a familiar situation for AI platform engineers: organizational demand for GPUs compounds, but they remain scarce and expensive. The instinct is often to isolate, giving each team their own clusters and resources. But this approach doesn’t scale economically. Dedicated clusters sit idle overnight, on weekends, and when training runs finish ahead of schedule. …