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Graylog Security vs Splunk Enterprise Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Apr 6, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Graylog Security
Ranking in Security Information and Event Management (SIEM)
39th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Splunk Enterprise Security
Ranking in Security Information and Event Management (SIEM)
1st
Average Rating
8.4
Reviews Sentiment
7.6
Number of Reviews
306
Ranking in other categories
Log Management (2nd), IT Operations Analytics (1st)
 

Mindshare comparison

As of May 2025, in the Security Information and Event Management (SIEM) category, the mindshare of Graylog Security is 0.6%, up from 0.3% compared to the previous year. The mindshare of Splunk Enterprise Security is 9.5%, down from 12.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM)
 

Featured Reviews

Tony Zafiropoulos - PeerSpot reviewer
Aggregates logs in one place and helps to review data points
We tried Graylog Security, starting with their inexpensive open-source version. We tested it out and continued using it for a while. As for the main differences between Graylog Security and other vendors, some users might prefer cloud-based platforms over on-premises solutions. It isn't inherently cloud-native, but that might not matter much for some.
ROBERT-CHRISTIAN - PeerSpot reviewer
Has many predefined correlation rules and is brilliant for investigation and log analysis
It is very complicated to write your own correlation rules without the help of Splunk support. What Splunk could do better is to create an API to the standard SIEM tools, such as Microsoft Sentinel. The idea would be to make it less painful. In ELK Stack, Kibana is the query language with which you can search log files. I believe Splunk has also a query language in which they search their log files, but once you have identified the log file that you want to use for further security correlation, you want to very quickly transport that into your SIEM tool, such as Microsoft Sentinel. That is something that Splunk could make a little bit less painful because it is a lot of effort to find that log file and forward it. An API with Microsoft Sentinel or a similar SIEM tool would be a good idea.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The tool aggregates logs. We can see the logs in one place."
"We use the solution to collect logs."
"Splunk Enterprise Security helped us with faster detection of threats."
"it can explain to management about what kind of traffic is visiting the network. It can also explain other traffic coming in and out, along with protecting against malware."
"Splunk works based on parsing log files."
"It is very simple to tweak or write a small piece of glue code to go ahead and create a new dashboard for a business unit to make near real-time decisions to focus more on other geographies when launching the product."
"Splunk's schema on demand is incredibly useful. I do not have to worry about what my users will need when we onboard their data."
"The consolidated overview of all the events that come in through our environment and an easy-to-access interface for all our end users are valuable."
"You can use it to gather syslog messages from anything."
"The solution's most valuable feature is that it helps with our use cases to detect anomalies in our data and it is important to my company since we have a lot of data on different logs on the systems."
 

Cons

"Graylog Security needs to incorporate security scorecards."
"Adding custom visualization in Splunk has been improved over the years but can still be made better by integrating more and more JavaScript visualization sources."
"Their technical support sucks."
"In the next release, they should include machine learning-based rules that would streamline the process of finding anomalies."
"Splunk's implementation process for managing multiple indexes can be complex, especially when dealing with a large number of components."
"At Splunk .conf24, I saw a demo for Splunk Enterprise Security 8. All the things that they have done in Splunk Enterprise Security 8 are what it can be better at."
"Our two main complaints are about the difficulty of the initial setup and the licensing model."
"The Web Application Firewall will send you too much information because it's more dedicated to security than a normal firewall."
"It needs more thoroughly tested releases. Every new big version (6, 7, etc.) has had so many bugs that it makes me wary of customers upgrading right away."
 

Pricing and Cost Advice

"I rate the tool's pricing a one out of ten."
"The pricing modules could be improved."
"Splunk Enterprise Security is not a cheap product, but I think it is worth every dollar that you pay."
"The price of Splunk is too high for our market."
"Splunk Enterprise Security is cheaper than competitors, but I do not know whether it is just our contract."
"As a team, we prefer the old pricing model with a perpetual license. We are still evaluating the whole subscription-based model."
"It can be tough to determine if you are getting all of the value out of your investment at times."
"The pricing is a little bit on the higher side, but looking at what Splunk provides us, it is reasonable."
"The tool's licensing is good and we haven't received any complaints from the team handling it."
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Comparison Review

VS
Feb 26, 2015
HP ArcSight vs. IBM QRadar vs. ​McAfee Nitro vs. Splunk vs. RSA Security vs. LogRhythm
We at Infosecnirvana.com have done several posts on SIEM. After the Dummies Guide on SIEM, we are following it up with a SIEM Product Comparison – 101 deck. So, here it is for your viewing pleasure. Let me know what you think by posting your comments below. The key products compared here are…
 

Top Industries

By visitors reading reviews
Computer Software Company
23%
Educational Organization
9%
Financial Services Firm
6%
Retailer
6%
Financial Services Firm
15%
Computer Software Company
14%
Manufacturing Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What do you like most about Graylog Security?
The tool aggregates logs. We can see the logs in one place.
What needs improvement with Graylog Security?
Graylog Security needs to incorporate security scorecards.
What SOC product do you recommend?
For tools I’d recommend: -SIEM- LogRhythm -SOAR- Palo Alto XSOAR Doing commercial w/o both (or at least an XDR) is asking to miss details that are critical, and ending up a statistic. Also, rememb...
What is a better choice, Splunk or Azure Sentinel?
It would really depend on (1) which logs you need to ingest and (2) what are your use cases Splunk is easy for ingestion of anything, but the charge per GB/Day Indexed and it gets expensive as log ...
How does Splunk compare with Azure Monitor?
Splunk handles a high amount of data very well. We use Splunk to capture information and as an aggregator for monitoring information from different sources. Splunk is very good at alerting us if we...
 

Overview

 

Sample Customers

Information Not Available
Splunk has more than 7,000 customers spread across over 90 countries. These customers include Telenor, UniCredit, ideeli, McKenney's, Tesco, and SurveyMonkey.
Find out what your peers are saying about Graylog Security vs. Splunk Enterprise Security and other solutions. Updated: April 2025.
850,028 professionals have used our research since 2012.