Log analytics · Graylog, Inc.

Graylog

Self-hostable log management platform with a free source-available core and paid Enterprise/Security tiers billed by daily volume.

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Graylog is a log management platform built on Elasticsearch/OpenSearch and MongoDB, offering centralized log collection, search and alerting through its own UI rather than relying on Kibana. The free 'Graylog Open' edition is source-available under SSPL and covers core ingestion and search with no volume cap, making it a common self-hosted starting point for teams that outgrow simple syslog setups. Paid 'Enterprise' and 'Security' (SIEM) editions add archiving, compliance reporting, anomaly detection and support, licensed either by daily ingest volume (GB/day) or by an annual prepaid consumption unit (GCU). It is primarily self-hosted, though Graylog also offers a cloud-hosted option.

At a glance

Vendor Graylog, Inc.
Pricing model Free tier + paid plans
Free tier Yes
Deployment Cloud, Self-hosted
Open source Yes (SSPL (Graylog Open); proprietary (Enterprise/Security))
Best for Teams wanting a free, self-hosted log management core with a clear upgrade path to SIEM features.

Pricing

Graylog Open is free with no volume cap; Enterprise and Security editions are licensed annually by daily processed-data volume (GB/day) or prepaid consumption units (GCU).

Plan Price Notes
Graylog Open Free source-available under SSPL, community support
Graylog Enterprise from $15,000/year 10GB/day or 100 GCU annual consumption
Graylog Security from $18,000/year 10GB/day or 100 GCU annual consumption

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Features

  • Centralized log collection, parsing and search
  • Custom dashboards and alert definitions
  • Data tiering between hot/warm storage
  • Archiving and compliance reporting (Enterprise)
  • Anomaly detection and correlation rules (Security)
  • Self-hosted or Graylog-managed cloud deployment

Integrations

Profile last reviewed September 21, 2026

Head to head

Alternatives

Elasticsearch Distributed search and analytics engine underlying the ELK stack, used for log analytics, full-text search and, via Elastic Security, SIEM. OpenSearch Open-source fork of Elasticsearch/Kibana for log analytics and search, now governed under the Linux Foundation. Grafana Loki Open-source log aggregation system that indexes only metadata labels, designed to pair cheaply with Grafana dashboards. Sumo Logic Cloud-native SaaS log analytics platform with a credits-based consumption model covering logs, metrics and security.

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Terms to know

Data observability Continuous automated monitoring of pipelines and datasets to catch freshness, volume and quality problems early. Anomaly detection Identifying data points or patterns that deviate significantly from expected or normal behavior. Log aggregation Collecting log data from many separate systems into one centralized, searchable store instead of checking each system individually. SIEM (security information and event management) A platform that centralizes and correlates log and event data across an IT environment to detect and investigate security threats.

Related guides

How to choose a log analytics tool Pick a log platform by who owns it, whether you index everything or only labels, and how the pricing model behaves as volume grows.