SIEM Pricing Comparison 2026: Splunk vs Sentinel vs QRadar vs Elastic
SIEM is 20-30% of your total SOC cost. Nobody else compares vendor pricing in the context of total security operations budget. Here is the full picture.
Vendor Comparison
| Feature | Splunk | Microsoft Sentinel | IBM QRadar | Elastic |
|---|---|---|---|---|
| Pricing Model | Ingest-based ($/GB/day) or workload | Consumption ($/GB), free M365 ingest | EPS-based (events/second) | Open-source + commercial tiers |
| Cost at 50GB/day | $55K - $75K/yr | $30K - $45K/yr | $10K - $30K/yr | $0 - $25K/yr |
| Cost at 100GB/day | $110K - $150K/yr | $55K - $85K/yr | $30K - $60K/yr | $15K - $50K/yr |
| Cost at 500GB/day | $500K - $750K/yr | $200K - $350K/yr | $100K - $200K/yr | $60K - $150K/yr |
| Deployment | Cloud, on-prem, hybrid | Azure cloud only | On-prem, IBM Cloud | Cloud, on-prem, hybrid |
| FTEs to Operate | 1-2 (dedicated admin) | 0.5-1 (M365 integrated) | 1-2 (QRadar specialists) | 1-2 (ELK expertise) |
| Strengths | Most powerful search, huge ecosystem | Free M365 data, Azure integration | Strong compliance, on-prem | Open-source, flexible, cost-effective |
| Weaknesses | Most expensive at scale | Azure lock-in | Declining market share | Complex to manage at scale |
Pricing Model Deep Dive
Splunk
$150+/GB/day ingest-based
The industry standard with the most powerful search language (SPL). Splunk offers ingest-based pricing at $150+/GB/day, or workload pricing that decouples cost from data volume. Workload pricing can reduce costs by 30-50% for organizations that ingest large volumes but run fewer searches.
Total cost of ownership: Add $120K-$180K/year for a dedicated Splunk admin. Training costs $3K-$8K per person. Splunk certifications are effectively required for efficient operation.
Microsoft Sentinel
$4.30/GB consumption + free M365 data
Best value for Microsoft shops. Azure Activity logs, Office 365 audit logs, and Defender security alerts ingest for free (Entra ID sign-in logs and raw endpoint telemetry are paid). Data Lake tier offers a steep discount for cold storage of compliance logs.
Forrester study: a 2024 Forrester Total Economic Impact study commissioned by Microsoft reported 234% ROI over three years for a composite organization migrating to Sentinel from a legacy SIEM. Vendor-commissioned; treat as directional.
IBM QRadar
EPS-based starting at $10K/yr
Priced by events per second (EPS) rather than data volume. This benefits organizations with many small events (authentication logs, network flows) where per-GB pricing would be expensive. Strong compliance features for regulated industries.
Consideration: IBM shifted strategic focus to QRadar Suite on Cloud Pak. On-prem QRadar has declining market share. Factor in potential migration costs within 3-5 years.
Elastic Security
Open-source base + cloud consumption
The most cost-effective option for organizations with strong engineering talent. The open-source ELK stack (Elasticsearch, Logstash, Kibana) is free. Commercial features (ML anomaly detection, case management, managed cloud) are available via Elastic Cloud at consumption-based pricing.
Hidden cost: Elastic requires significant engineering effort to deploy and maintain at scale. Budget 1-2 dedicated FTEs ($110K-$160K/yr each) for a production deployment.
SIEM Selection by Organization Profile
Microsoft shop (M365, Azure AD, Defender)
Microsoft Sentinel
Free ingestion of Azure Activity, Office 365 audit logs, and Defender alerts trims data costs (Entra ID sign-in logs are still paid). Native integration with your existing security stack.
AWS-primary infrastructure
Elastic or Splunk Cloud
Both deploy natively on AWS. Elastic is more cost-effective; Splunk has a deeper feature set.
On-prem compliance requirements
IBM QRadar or Elastic
Both support full on-premises deployment. QRadar has stronger out-of-box compliance reporting.
Budget-constrained startup
Elastic (open-source)
Free base + community support. Requires engineering talent but eliminates licensing cost.
SOAR and XDR Add-On Costs
| Platform | Type | Annual Cost | Pairs With |
|---|---|---|---|
| Splunk SOAR | SOAR | $50K - $150K | Splunk Enterprise/Cloud |
| Palo Alto XSOAR | SOAR | $75K - $200K | Vendor-agnostic |
| Swimlane | SOAR | $50K - $125K | Vendor-agnostic |
| Microsoft Sentinel SOAR | SOAR | Included (Logic Apps pricing) | Microsoft Sentinel |
| CrowdStrike Falcon XDR | XDR | $30 - $60/endpoint/yr | CrowdStrike ecosystem |
| SentinelOne Singularity XDR | XDR | $25 - $50/endpoint/yr | SentinelOne ecosystem |
Related Pages
Updated 11 April 2026. Pricing from vendor websites, Forrester TEI studies, and Gartner estimates.