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It's a split decision.
Splunk is a data platform for teams that want security and observability together, federated search, and options for on-premises, private-cloud, or air-gapped deployment. Grafana is an observability platform built around telemetry standards, with a defined free tier and usage-priced cloud products. For developers, the practical choice depends on whether you need Splunk’s broader security capabilities and deployment options or Grafana’s OpenTelemetry and Prometheus ecosystem. Compare expected ingest, retention, and product-specific usage before committing.
01Side by side
| Splunk | Grafana | |
|---|---|---|
| Pricing model | Usage-based; core platform prices require sales discussion | $19/month Pro platform fee plus usage |
| Free tier | Free editions for Observability Cloud and Agent Observability | Free plan with published telemetry allowances |
| Open source | Open-source status unspecified | Grafana is open source; license not specified |
| Self-hosting | Enterprise supports on-prem, private-cloud, and air-gapped deployment | Enterprise offers Bring Your Own Cloud |
| API and SDKs | Native OpenTelemetry support, SDKs, and agents | OpenTelemetry- and Prometheus-based integrations |
| Integrations | Splunkbase lists 2,000+ integrations and apps | Hundreds of plugins and integrations |
| Deployment model | Cloud, on-prem, private-cloud, hybrid, or air-gapped | Grafana Cloud; Enterprise cloud deployment options |
| Lock-in and portability | Federated search can query data where it lives | Open standards; connect existing tools and data sources |
Splunk Choose Splunk if
- Choose Splunk if security and observability need one platform.
- Choose Splunk if you need on-premises or air-gapped deployment.
- Choose Splunk if federated search across data locations matters.
Grafana Choose Grafana if
- Choose Grafana if you want a defined free-tier allowance.
- Choose Grafana if your stack uses OpenTelemetry and Prometheus.
- Choose Grafana if you want telemetry charges broken out by product.
02Pricing at real usage
Grafana Cloud Free costs $0 and includes 14-day retention for metrics, logs, traces, profiles, and k6, plus 10k active series per month for Metrics and 50 GB per month for Logs, Traces, and Profiles. Pro starts with a $19 monthly platform fee, then pay-as-you-go charges above included usage. For example, Pro Logs lists $0.050/GB processed, $0.400/GB written, and $0.100/GB retained. Enterprise requires a $25,000 annual spend commit.
Splunk lists free editions for Observability Cloud and Agent Observability. Observability Cloud plans include Infrastructure at $15 per host per month, App & Infra at $60, and End-to-End at $75; listed prices are monthly equivalents billed annually. Splunk Cloud Platform and Enterprise use activity-based, ingest, or workload pricing, but prices are not published. Ask Splunk for a quote based on ingest or workload, retention, and deployment.
03API, SDKs and integration
Splunk’s homepage cites native OpenTelemetry support, SDKs, and agents. Splunkbase lists more than 2,000 integrations and apps. The platform also offers federated search, so teams can search and analyze telemetry where it lives across tiered data. The vendor does not specify SDK languages, API endpoint conventions, or CLI workflows on its product pages; check the documentation for the languages and automation interfaces your codebase needs.
Grafana Cloud is described as OpenTelemetry-native and connects existing tools and data sources through open standards including OpenTelemetry and Prometheus. Grafana lists hundreds of plugins and integrations, plus dashboards, visualization, incident response, testing, and synthetic monitoring. Its product pages do not specify SDK language coverage or CLI workflows. For either product, validate the required protocols, authentication, and provisioning path against the documentation before standardizing integrations.
04Open source, self-hosting and lock-in
Grafana is described as open source, though its product pages do not name a license. Its cloud offering connects existing tools through OpenTelemetry, Prometheus, and plugins, which can reduce dependence on a single telemetry format. Grafana Enterprise lists Public Cloud, Federal Cloud, and Bring Your Own Cloud deployment options; those options do not by themselves establish a self-hosted server offering.
Splunk’s open-source status is unspecified. Splunk Enterprise supports on-premises, private-cloud, hybrid, and air-gapped deployment, while Splunk Cloud Platform is hosted. Federated search can query data where it lives, but neither product’s pages describe a general data-export process or guarantee low-effort migration. Before choosing, ask about export formats, retention and deletion, configuration portability, and the work needed to move dashboards, alerts, and detections.
Questions people ask
Is Splunk difficult to learn?
Learning effort depends on the tasks and products involved. Splunk spans machine-data search, security, and observability, with separate products such as Enterprise Security and SOAR. Teams should assess the search, alerting, and administration workflows they need and review the relevant documentation before estimating onboarding.
Is Splunk open-source?
Splunk is not identified as open source in its product pages. Splunk Enterprise is available for on-premises, private-cloud, hybrid, or air-gapped deployment, but deployment flexibility is different from an open-source license. Ask Splunk about licensing and source availability if either affects your requirements.
What is the difference between Splunk and Splunk ES?
Splunk is the broader data platform for security, observability, and AI. Enterprise Security is its security product for threat detection, investigation, and response. Essentials lists SIEM and detection capabilities; Premier adds SOAR, UEBA, and Automated Threat Analysis. Both are usage-based, with prices not published.
Are Prometheus and Grafana the same thing?
No. Prometheus is an open standard Grafana supports for connecting telemetry; Grafana is an observability platform with dashboards, visualization, and other products. Grafana Cloud can connect existing Prometheus-based data sources alongside OpenTelemetry and its plugin ecosystem.