Google Kubernetes Engine (GKE) offers two distinct pricing models, Autopilot and Standard, each with unique billing approaches that can impact overall costs. Autopilot mode abstracts infrastructure management, charging users based on the resources their pods request, making it ideal for those seeking operational simplicity without managing nodes. Standard mode provides full control over cluster infrastructure, with billing based on virtual machine usage, offering greater flexibility but requiring more responsibility for cost management. The choice between these models depends on priorities like simplicity versus control, and the nature of workloads, whether steady-state or bursty. Both models involve additional charges for networking, storage, and other services, and Google provides discounts and strategies such as Sustained Use Discounts and Committed Use Discounts to help mitigate costs. Understanding the intricacies of each model is crucial for managing expenses effectively and ensuring that clusters are both cost-efficient and reliable.