Grafana Cloud Application Observability vs Radar

Grafana Cloud Application Observability monitors applications and brings OpenTelemetry and Prometheus data together to help software engineers investigate anomalies and their causes. Its knowledge graph discovers services and relationships from telemetry, while the service catalog displays latency, error ratio, and request rate for each service. The RCA workbench and Entity Graph help investigate correlated problems across a stack. Metrics, logs, traces, and profiles share a unified view, with drill-down from a service into its signals. Grafana identifies Alloy as a collector with native pipelines for OpenTelemetry and Prometheus. The free plan includes up to 2,232 host hours per month and community support. Pro is listed at $0.03 a month, with a $19 monthly platform fee and $0.025 per host hour; host hours and application telemetry are billed at standard Grafana Cloud rates. Serverless usage is billed on telemetry ingested instead of host hours. The cloud service runs on Linux, macOS, Windows, and the web.

Radar is an open-source Kubernetes interface for platform engineering teams and AI agents. It brings topology, events, Helm, GitOps, image internals and audits into one interface. Its live graph shows Deployments, Services and Ingresses with traffic, TLS health and cross-namespace dependencies. Radar can run locally as a single binary with a kubeconfig or in-cluster through Helm, and desktop apps are available for macOS, Linux and Windows. Built-in integrations include Argo, Flux, Cilium, Istio, Karpenter, KEDA, Crossplane, cert-manager, OpenCost, Kubecost, Prometheus, Trivy and Velero. Radar OSS is free forever, supports unlimited clusters and nodes, and sends no cluster data out, though it makes one anonymous version check that can be blocked. Cloud Free supports up to three clusters and 100 hosted investigations per month. Paid plans start at $149 per cluster per month for Team; Enterprise costs $299 per cluster per month. Cloud offers AI investigations and alerts to Slack or webhooks. It streams viewed resources, events and logs through its control plane without storing them.