Softwr

Logging · head to head

Graylog vs Mezmo

Graylog logo

Graylog

Logging

Log Aggregation and Analysis Platform

From
Free
Rated
-
Full reviewWebsite
Mezmo logo

Mezmo

Logging

Composable Observability Platform (LogDNA)

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Graylog graylog Enterprise starts at $15,000 per year and Graylog Security at $18,000 per year, priced by daily volume or annual consumption; Mezmo no pricing tiers or dollar amounts published on pricing page
  • They diverge on capability: Graylog covers Full-text search, Mezmo covers AI-powered insights.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Graylog and Mezmo actually diverge.

Attributes where Graylog and Mezmo differ
AttributeGraylogMezmo
Pricing modelopen-sourceusage-based
Founded20112014

Identical on both: starting price (Free), free tier (Yes), platforms (Web, Api), user rating (Not yet rated), category (Logging).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Graylog

  • Full-text search
  • Parsing and extraction
  • Real-time analytics

Only in Mezmo

  • AI-powered insights
  • Live tailing
  • Custom parsing

Both cover

  • Log aggregation
  • API
  • Webhooks
  • REST
  • Web support
  • Api support

What people use each for

The jobs each tool is most often brought in to do.

Graylog

  • Log aggregation and analysis for SecOps teamsnot Mezmo
  • IT and DevOps monitoring and troubleshootingnot Mezmo
  • Enterprise security event monitoringnot Mezmo

Mezmo

  • Log aggregation and observabilitynot Graylog
  • AI-powered root cause analysisnot Graylog
  • Telemetry pipeline managementnot Graylog

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Graylog

  • Graylog Enterprise starts at $15,000 per year and Graylog Security at $18,000 per year, priced by daily volume or annual consumption
  • Correlation engine, scheduled and custom reports, compliance reports and teams management are Enterprise-only
  • Data tiering across hot, warm and archive storage is an Enterprise feature, not available in Graylog Open
  • Graylog Open carries community support only; professional support requires a paid edition
  • UEBA anomaly detection, Sigma rules, MITRE ATT&CK alignment and SOAR automation are limited to Graylog Security

Mezmo

  • No pricing tiers or dollar amounts published on pricing page
  • No named plans available to compare
  • Pricing model not transparently disclosed upfront

Pricing, plan by plan

Graylog

Free
  • FreeFree
    • Log aggregation
    • Full-text search
    • Parsing and extraction

Mezmo

Free
  • FreeFree
    • Log aggregation
    • AI-powered insights
    • Live tailing

Which should you pick?

Choose Graylog if

  • You need full-text search.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want parsing and extraction.
Graylog review

Choose Mezmo if

  • You need ai-powered insights.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want live tailing.
Mezmo review

Questions people ask

Is Graylog or Mezmo better?
Neither clearly leads. Graylog starts at Free and Mezmo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Graylog or Mezmo?
Graylog starts at Free and Mezmo at Free.
Does Graylog or Mezmo run on more platforms?
Both run on Web, Api, so platform support will not decide this one for you.
Can I use Graylog for free?
Both have a free tier, so you can try either at no cost before committing.
What is Graylog best used for?
Graylog is most often used for log aggregation and analysis for secops teams, it and devops monitoring and troubleshooting, enterprise security event monitoring. Of those, log aggregation and analysis for secops teams and it and devops monitoring and troubleshooting are not what Mezmo is typically brought in for.
What can Graylog do that Mezmo cannot?
Graylog covers Full-text search, Parsing and extraction, Real-time analytics. Mezmo covers AI-powered insights, Live tailing, Custom parsing. Both handle Log aggregation, API, Webhooks, REST.

Answered from the vendors’ own pages

Graylog: Does Graylog have a free version?

Yes. Graylog Open is a free, open-source option for collecting, storing, searching, and analyzing log data. However, it includes only community support.

Source
Mezmo: How much does Mezmo cost?

Mezmo uses platform-based pricing tied to data volume and retention rather than per-query charges. The company emphasizes 'no AI surcharges' and 'no pay-per-query surprises,' with pricing scaling based on data volume, but specific dollar amounts and named tiers are not published on their pricing page.

Source
Graylog: How much does Graylog Enterprise cost?

Graylog Enterprise pricing starts at $15,000/year based on daily log volume or annual data consumption. Exact pricing requires contacting sales.

Source
Mezmo: Is there a free trial for Mezmo?

Mezmo offers a free trial available at mezmo.com/trial, allowing users to test the platform before purchasing, with pricing scaling predictably as data volume grows.

Source
Graylog: What is the difference between Graylog Enterprise and Security editions?

Graylog Security starts at $18,000/year and includes advanced threat detection capabilities beyond the Enterprise edition. Both include technical support.

Source
Mezmo: What does Mezmo's platform license include?

All Mezmo plans include telemetry pipeline ingestion, automatic noise reduction for LLM cost efficiency, AI-ready context with event clustering, agentic root cause analysis capabilities, full data control and routing, and role-based access controls, with no extra cost for AI features.

Source
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