opencost
OpenCost is an open-source Kubernetes cost monitoring tool that tracks workload expenses across cloud providers (AWS, Azure, GCP) and on-premises clusters. It provides real-time cost allocation by namespace, pod, node, and service, plus unified visibility into multi-cloud spending.
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | opencost/opencost |
| Owner | opencost |
| Primary language | Go |
| License | Apache-2.0 — OSI-approved |
| Stars | 6.6k |
| Forks | 836 |
| Open issues | 246 |
| Latest release | v1.120.4 (2026-06-25) |
| Last updated | 2026-07-07 |
| Source | https://github.com/opencost/opencost |
What opencost is
Go-based cost exporter that integrates with Kubernetes APIs, Prometheus, and cloud provider billing APIs to calculate resource allocation costs. Supports dynamic pricing from AWS/Azure/GCP, custom CSV pricing for on-prem, and exports metrics via Prometheus /metrics endpoint. Recently added MCP (Model Context Protocol) server for AI agent integration.
Get the opencost source
Clone the repository and explore it locally.
git clone https://github.com/opencost/opencost.gitcd opencost# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- Requires Kubernetes 1.20+ cluster and Prometheus for metrics export; Helm is the sole installation method (standalone manifests removed).
- Must configure cloud provider API credentials (AWS, Azure, GCP) to enable dynamic pricing; on-prem requires manual CSV pricing setup.
- For HA/sharded Prometheus, point PROMETHEUS_SERVER_ENDPOINT to a global query endpoint (Thanos, Cortex, Mimir) to avoid incomplete results.
- MCP server is opt-in and disabled by default; enable only if AI agent integration is required, configured via Helm chart or environment variables.
- Resource requests/limits and persistent volume sizing depend on cluster scale; review Helm values for production deployments.
When to avoid it — and what to weigh
- Non-Kubernetes cloud cost management needed — OpenCost is Kubernetes-focused; for general cloud cost monitoring across non-K8s resources, consider dedicated cloud FinOps platforms.
- Real-time cost data required at sub-minute granularity — OpenCost relies on Prometheus scrape intervals and cloud provider billing API latency; not suitable if you need true real-time cost updates.
- Minimal operational overhead desired — Requires Prometheus integration, cloud provider API credentials, and Helm chart management. Not a zero-touch cost visibility solution.
- Closed-source compliance or vendor lock-in required — Apache 2.0 licensed open-source; if you need proprietary SLAs, support contracts, or vendor lock-in, consider commercial alternatives like Kubecost.
License & commercial use
Licensed under Apache License 2.0 (Apache-2.0), a permissive OSI-approved license permitting commercial use, modification, and distribution with minimal restrictions.
Apache 2.0 permits commercial use without explicit permission or fees. However, this is the upstream open-source project; production support, SLAs, and commercial features are not available here. Kubecost (original commercial sponsor) offers proprietary distributions if enterprise support is required. Review Apache 2.0 terms and your legal team's guidance before production deployment.
DEV.co evaluation signals
Editorial assessment — not user reviews. Directional, with an explicit confidence level.
| Signal | Assessment |
|---|---|
| Maintenance | Active |
| Documentation | Adequate |
| License clarity | Clear |
| Deployment complexity | Moderate |
| DEV.co fit | Strong |
| Assessment confidence | High |
Runs in Kubernetes with API server access to read resource metadata. Requires cloud provider credentials (AWS, Azure, GCP) stored as secrets; ensure proper RBAC and secret management. MCP server disabled by default to minimize attack surface. No detailed security audit data provided; review project's OpenSSF scorecard and conduct your own assessment. No known CVEs stated in provided data.
Alternatives to consider
Kubecost (commercial/open-source)
Original commercial sponsor of OpenCost; offers proprietary features, SLAs, and support not available in this upstream project.
AWS Cost Explorer / Azure Cost Management / GCP Billing
Native cloud provider cost tools; simpler for single-cloud environments but lack Kubernetes-native allocation and multi-cloud aggregation.
CloudZero / Vantage / CloudHealth
Third-party FinOps platforms with broader cloud cost intelligence, anomaly detection, and managed support; higher cost but less operational burden.
Build on opencost with DEV.co software developers
Deploy OpenCost via Helm to track workload costs across Kubernetes and cloud providers. Perfect for FinOps teams and cost-aware engineering.
Talk to DEV.coRelated open-source tools
Surfaced by semantic similarity across the DEV.co open-source index.
Related on DEV.co
Explore the category and the services that help you build with it.
opencost FAQ
Does OpenCost require a commercial license?
Can I use OpenCost in an air-gapped / on-prem Kubernetes cluster?
What is the MCP server and should I enable it?
Is real-time cost data available?
Custom software development services
Adopting opencost is usually one piece of a larger software development effort. As a software development agency, DEV.co provides software development services and web development expertise — pairing senior software developers and web developers with your team to design, build, and operate open-source observability software in production.
Gain Kubernetes Cost Visibility
Deploy OpenCost via Helm to track workload costs across Kubernetes and cloud providers. Perfect for FinOps teams and cost-aware engineering.