Best SIEM Software · 2026

Blumira logoBlumira vs Graylog Security logoGraylog Security

Blumira vs Graylog Security: on our data-weighted scoring, Blumira edges ahead (8.1 vs 8.1/10). Blumira starts at Free tier available and is best for lean it teams wanting easy siem + detection with a free tier; Graylog Security starts at $18000/yr (Security, 10 GB/day) and is best for teams wanting siem-grade threat detection without splunk-level cost or complexity. Choose Blumira for the stronger overall track record; consider Graylog Security if its pricing model or fit matches your environment better. Side-by-side table below.

Our pick

Blumira

8.2/10
MSP Compared score
Starting price
Free tier available
Reviews
4.6/5 (~120 G2 reviews)
Free trial
Free tier + 14 days
Deployment
Cloud
Best for
Lean IT teams wanting easy SIEM + detection with a free tier
Visit Blumira →

Graylog Security

8.0/10
MSP Compared score
Starting price
$18000/yr (Security, 10 GB/day)
Reviews
4.4/5 (~116 G2 reviews)
Free trial
Free tier + 14 days
Deployment
Cloud + self-host
Best for
Teams wanting SIEM-grade threat detection without Splunk-level cost or complexity
Visit Graylog Security →

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Strengths at a glance

Six criteria, each scored 0–10 on the same scale from real review data, public pricing and feature coverage. See our methodology →

EditorialUser reviewsAdoptionAffordabilityFeature breadthEase of trial
BlumiraGraylog Security
CriterionBlumiraGraylog Security
Editorial 8.1 8.1
User reviews 9.2 8.8
Adoption 5.5 5.5
Affordability 9.5 9.5
Feature breadth 5.0 6.0
Ease of trial 10.0 10.0

Blumira vs Graylog Security: head-to-head

Blumira vs Graylog Security — specs and pricing
BlumiraGraylog Security
Starting price Free tier available $18000/yr (Security, 10 GB/day)
Pricing model per user per gb
Free trial / tier Free tier + 14 days Free tier + 14 days
Best for Lean IT teams wanting easy SIEM + detection with a free tier Teams wanting SIEM-grade threat detection without Splunk-level cost or complexity
Deployment Cloud Cloud + self-host
G2 rating 4.6/5 (120) 4.4/5 (116)
Capterra rating
Our score 8.1 8.1

Choose Blumira if…

You need lean it teams wanting easy siem + detection with a free tier.

Pros

  • Genuinely easy SIEM
  • Free M365 tier
  • Fast deployment

Cons

  • Lighter than enterprise SIEM
  • Paid tiers quote-based
  • Smaller integration set

Blumira pricing · review

Choose Graylog Security if…

You need teams wanting siem-grade threat detection without splunk-level cost or complexity.

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

Graylog Security pricing · review

In depth

Pricing: Blumira vs Graylog Security

Blumira bills on a per user model from Free tier available (free tier available), while Graylog Security uses a per gb model from $18000/yr (Security, 10 GB/day) (free tier available). Because the models differ, the cheaper option flips depending on your fleet size — model both at your seat/endpoint count.

Features & deployment

Blumira ships 5 headline capabilities (Cloud SIEM, Automated detections + playbooks, 24/7 SecOps support, Honeypots) and deploys Cloud. Graylog Security ships 6 (Free open-source tier, SIEM with MITRE ATT&CK mapping, Sigma rules + UEBA + risk scoring, Pipeline-based enrichment), deploying Cloud + self-host.

Ratings & verdict

Blumira holds 4.6/5 (~120 G2 reviews); Graylog Security holds 4.4/5 (~116 G2 reviews). On our data-weighted score, Blumira edges ahead (8.1 vs 8.1/10). Pick Graylog Security instead when teams wanting siem-grade threat detection without splunk-level cost or complexity. See Blumira alternatives or Graylog Security alternatives.

Frequently asked questions

Blumira vs Graylog Security: which is better?
Blumira vs Graylog Security: on our data-weighted scoring, Blumira edges ahead (8.1 vs 8.1/10). Blumira starts at Free tier available and is best for lean it teams wanting easy siem + detection with a free tier; Graylog Security starts at $18000/yr (Security, 10 GB/day) and is best for teams wanting siem-grade threat detection without splunk-level cost or complexity.
Is Blumira cheaper than Graylog Security?
Blumira starts at Free tier available and Graylog Security starts at $18000/yr (Security, 10 GB/day) (see the pricing rows for models and limits).
Data as of June 16, 2026. Sources: blumira.com, graylog.org. Figures are pulled from public vendor and security data and refreshed automatically.