OpenCost provides real-time cost monitoring for Kubernetes clusters by combining cloud billing data with cluster resource utilization metrics. The platform maps costs to individual namespaces, deployments, pods, containers, and custom labels, giving teams precise visibility into how cloud spend is distributed across applications, teams, and environments. This granular allocation enables accurate chargeback and showback without relying on estimates.
As a CNCF-certified project, OpenCost adheres to the Kubernetes cost monitoring standards defined by the cloud-native community. It supports all major cloud providers including AWS, GCP, and Azure, as well as on-premises Kubernetes distributions. The tool integrates with Prometheus for metrics collection and Grafana for visualization, fitting naturally into existing cloud-native observability stacks.
OpenCost is completely free and open-source, making it the accessible foundation for any organization's FinOps practice. Multi-cloud support ensures consistent cost visibility even in hybrid environments. The active community contributes new cloud provider integrations, cost allocation models, and reporting capabilities. Enterprise teams often use OpenCost as the data foundation, layering commercial optimization tools on top for automated action.
