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It's a split decision.
Choose Prometheus for a free, open-source metrics and monitoring base: its independent servers use local storage, and its tools include PromQL and alerting. Choose Grafana if you need a broader observability platform for logs, metrics, traces, dashboards, AI operations, and cost management. Grafana has a free plan, but the pricing page lists Pro at $19 per month plus usage. The right pick depends on whether you need metrics monitoring or a wider set of observability tools.
01Side by side
| Grafana | Prometheus | |
|---|---|---|
| Starting price | $0 free; Pro $19/month plus usage | $0; open source |
| Free plan | Yes; usage and retention limits apply | Yes; no usage limits published |
| Best for | Teams needing broad telemetry and observability tools | Teams needing open-source metrics monitoring |
| Core strength | Unified telemetry, dashboards, and observability tools | PromQL metrics collection, querying, and alerting |
| Learning curve | Not published | Not published |
| Integrations/data | Logs, metrics, traces, profiles, and more | Metrics, PromQL, libraries, and hundreds of integrations |
| Team/seat costs | $19 monthly platform fee plus usage; $25K annual Enterprise minimum | Free; no seat or usage limits published |
| Support | Community, 8×5 email, or premium support by plan | Support options not specified |
Grafana Choose Grafana if
- Choose Grafana if you need logs, metrics, traces, and dashboards together.
- Choose Grafana if AI operations or telemetry cost controls matter.
- Choose Grafana if paid support options matter.
Prometheus Choose Prometheus if
- Choose Prometheus if you want open-source metrics monitoring at no license cost.
- Choose Prometheus if PromQL and alerting rules fit your workflow.
- Choose Prometheus if independent servers with local storage suit your setup.
02Pricing compared
Prometheus costs $0: its Open Source plan is Apache 2.0 licensed, with no seat or usage limits published. Grafana also has a free plan, but it comes with stated caps: 10,000 active metric series per month, 50 GB per month for logs, traces and profiles, and 14-day retention for listed telemetry types.
Grafana Pro starts with a $19 monthly platform fee, then adds usage charges above included allowances. For example, Pro metrics start at $6.50 per 1,000 series. Other products have separate rates, including $0.050 per GB of logs processed and $0.01 per Kubernetes host hour. Grafana Enterprise requires a $25,000 annual spend commit. So Prometheus is the clearer fit if the priority is a free metrics-monitoring base; Grafana’s bill depends on which products and usage you need.
03Features and depth
These products overlap on metrics, but they cover different ground. Prometheus collects, stores and queries metrics. Its dimensional data model uses metric names and key-value pairs; PromQL queries time series, and alerting rules can use PromQL with Alertmanager handling notifications and silencing. It also offers instrumentation libraries and integrations for extracting metrics from systems.
Grafana is broader: its platform brings logs, metrics, traces and other telemetry together, with dashboards and visualization, incident response, testing and cost-management tools. Its listed capabilities also include an AI assistant, root-cause investigations, agent observability, Adaptive Telemetry and a Knowledge Graph for shared context. That breadth is not the same as a like-for-like Prometheus feature set. Prometheus is centered on metrics monitoring; Grafana targets wider observability and related operations. Choose based on whether metrics and alerting are enough, or whether you also need the other telemetry signals and operational tools.
04Ease of use and learning curve
Prometheus is available as a statically linked binary and is described as easy to deploy. Its independent servers use local storage, though, so teams should account for operating that setup rather than assume a hosted service. PromQL is central to querying and alerting, so getting useful results means learning its query model.
Grafana Cloud puts a wider set of observability tools in one platform, but the product range and usage-based Pro charges make the choice of features and cost worth reviewing before rollout. The published reviews score ease of use at 7 for Prometheus and 6 for Grafana. Those scores are a rough signal, not a guarantee for a team’s environment.
Questions people ask
What is the use of Grafana and Prometheus?
Prometheus collects, stores and queries application, system and service metrics, with PromQL and alerting rules for monitoring. Grafana provides a broader observability platform for metrics, logs, traces and other telemetry, plus dashboards and tools for AI operations, incident response and cost management.
Which database is best for Grafana?
The published product information does not name or compare databases for Grafana, so we can’t recommend one from these sources. Grafana is described as bringing telemetry into an observability platform; check the current Grafana documentation for supported data sources and choose based on the data you need to query.
What are some alternatives to Grafana?
Prometheus is an option if your main requirement is open-source metrics monitoring: it offers PromQL, alerting rules and integrations. It is not a direct substitute for every Grafana capability in the information here; Grafana also covers logs, traces, dashboards, AI operations and cost management.
What is the difference between Splunk and Grafana?
The published information covers Grafana but does not provide Splunk’s features, plans or prices, so we can’t make a sourced feature-by-feature comparison. Grafana is described as an observability platform for logs, metrics, traces and related tools. Compare current Splunk documentation and pricing against the Grafana capabilities and usage charges you need.