{
  "name": "Prometheus",
  "slug": "prometheus",
  "pricingModel": "free",
  "normalized": {
    "currency": "USD",
    "entry": null,
    "plans": [
      {
        "plan": "Free",
        "perMonth": 0,
        "unit": "unknown",
        "unitNoun": null,
        "billing": "unknown",
        "free": true,
        "contactSales": false
      }
    ],
    "hasFreePlan": true,
    "hasFreeTrial": false,
    "contactSalesOnly": false
  },
  "pricingDetails": {
    "notes": "Free and open source. CNCF graduated project.",
    "tiers": [
      {
        "name": "Free",
        "price": 0,
        "features": [
          "Time series DB",
          "PromQL",
          "Alerting",
          "Service discovery"
        ],
        "description": "Open source",
        "highlighted": true
      }
    ],
    "currency": "USD",
    "hasFreeTrial": false,
    "billingPeriod": "month",
    "startingPrice": 0,
    "pricingPageUrl": "https://prometheus.io"
  },
  "costFacts": null,
  "pricesByRegion": null,
  "verdict": "Prometheus is 100% free and open source (Apache 2.0). Zero licensing costs ever. The real costs are operational: storage, compute for the server, and engineering time to manage retention, federation, and high availability. Most teams eventually pay for managed Prometheus (Grafana Cloud, Amazon Managed Prometheus, or Thanos for long-term storage).",
  "bestFor": "DevOps teams with Kubernetes infrastructure | Organizations wanting vendor-independent monitoring | Teams comfortable with self-hosted infrastructure | Companies building custom observability stacks",
  "hiddenCosts": [
    "Storage costs grow linearly with metric cardinality and retention period",
    "No built-in long-term storage -- need Thanos, Cortex, or managed solution",
    "No native high availability -- requires manual federation or Thanos",
    "Amazon Managed Prometheus: $0.03 per 10M metric samples ingested, $0.003 per 10M samples queried",
    "Engineering time to manage and tune TSDB, alerting rules, and scrape configs"
  ],
  "recentChanges": [],
  "priceHistory": [],
  "partnerLink": false,
  "correction": "This price may be out of date. If the vendor's page differs, call report_issue with evidence_url and quote, or verify_price.",
  "provenance": {
    "lastVerifiedAt": "2026-10-02",
    "sourceUrl": "https://prometheus.io",
    "confidence": "medium"
  },
  "source": "Toolradar",
  "citation": "Toolradar, verified 2026-10-02, https://toolradar.com/tools/prometheus/pricing",
  "affiliateUrl": "https://toolradar.com/api/go/prometheus?ref=mcp&key=json",
  "toolradarUrl": "https://toolradar.com/tools/prometheus/pricing"
}