GPU are poorly used despite their cost

Laurent Gil, President of Cast AI, discusses the findings of the company’s 2026 State of Kubernetes Optimisation Report, a comprehensive analysis of GPU, CPU, and memory utilisation across non-optimised Kubernetes clusters. Drawing on data from tens of thousands of clusters, the report delivers a clear and urgent message: GPU are poorly utilised despite their cost, at 5%; the efficiency gains that Kubernetes was designed to unlock are not emerging naturally with scale, and the gap between what organisations are paying for and what they are actually using is widening.