Graylog Security Review (2026)
- Starting price
- $18000/yr (Security, 10 GB/day)
- Free trial
- Free tier + 14 days
- Deployment
- Cloud + self-host
- Best for
- Teams wanting SIEM-grade threat detection without Splunk-level cost or complexity
Our verdict
Graylog Security earns 8.1/10 in our review, weighted from 4.4/5 (~116 G2 reviews) and its feature/pricing profile. The pragmatic mid-market SIEM — much of Splunk's value at a fraction of the cost, with a credible free tier to start. Best for teams wanting SIEM-grade threat detection without Splunk-level cost or complexity. Starting price: $18000/yr (Security, 10 GB/day).
Backed by 4.4★ · 116 reviews on G2.
Pros & cons
✓ Pros
- Strong value vs Splunk
- Real free self-hosted tier
- Data Lake avoids ingestion tax
✕ Cons
- Enterprise pricing requires sales
- Inherits Elastic/OpenSearch ops complexity
- Limited OTLP/observability scope
Key features
- Free open-source tier
- SIEM with MITRE ATT&CK mapping
- Sigma rules + UEBA + risk scoring
- Pipeline-based enrichment
- Data Lake (untaxed retention)
- Built on Elasticsearch/OpenSearch
How Graylog Security compares
| Graylog Security | Microsoft Sentinel | Splunk Enterprise Security | |
|---|---|---|---|
| Starting price | $18000/yr (Security, 10 GB/day) | $4.3/GB ingested (PAYG, East US) | Custom quote |
| Pricing model | per gb | per gb | quote |
| Free trial / tier | Free tier + 14 days | 31 days | 14 days |
| Best for | Teams wanting SIEM-grade threat detection without Splunk-level cost or complexity | Microsoft-centric orgs wanting a cloud-native SIEM with deep Entra/Defender integration | Large enterprises needing deep, mature SIEM with extensive integrations and log analytics |
| Deployment | Cloud + self-host | Cloud | Cloud + on-prem |
| G2 rating | 4.4/5 (116) | 4.4/5 (289) | 4.3/5 (222) |
| Capterra rating | — | — | — |
| Our score | 8.1 | 8.1 | 8.1 |
Full review
Graylog Security review — 8.1/10
The pragmatic mid-market SIEM — much of Splunk’s value at a fraction of the cost, with a credible free tier to start. Our score weights 4.4/5 (~116 G2 reviews) against feature breadth and pricing value.
Pricing value
Graylog Security starts at $18000/yr (Security, 10 GB/day) on a per gb model with a free tier. See the full pricing breakdown.
Who should buy Graylog Security
Best for teams wanting SIEM-grade threat detection without Splunk-level cost or complexity. If that is not you, weigh the alternatives.
Frequently asked questions
- Is Graylog Security worth it?
- Graylog Security earns 8.1/10 in our review, weighted from 4.4/5 (~116 G2 reviews) and its feature/pricing profile. The pragmatic mid-market SIEM — much of Splunk's value at a fraction of the cost, with a credible free tier to start. Best for teams wanting SIEM-grade threat detection without Splunk-level cost or complexity. Starting price: $18000/yr (Security, 10 GB/day).
- What does Graylog Security cost?
- From $18000/yr (Security, 10 GB/day) — see the pricing page.
Based on aggregated third-party ratings (4.4/5 (~116 G2 reviews)) and Graylog Security's published feature and pricing data. Hands-on testing notes are added as we trial each tool — see how we test.