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Graylog Security vs Splunk Enterprise Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

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)
60th
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
7.1
Number of Reviews
466
Ranking in other categories
Log Management (1st), IT Operations Analytics (1st)
 

Mindshare comparison

As of October 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Graylog Security is 0.6%, up from 0.6% compared to the previous year. The mindshare of Splunk Enterprise Security is 8.0%, down from 9.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Splunk Enterprise Security8.0%
Graylog Security0.6%
Other91.4%
Security Information and Event Management (SIEM)
 

Featured Reviews

Tony Zafiropoulos - PeerSpot reviewer
Owner/ Chief Engineer at Fixvirus.com
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.
Sathis-Kumar - PeerSpot reviewer
Senior Manager at Bank of America
Helps us detect cyber threats quickly and integrate multiple feeds effectively
Overall, the product is good, but when it comes to some infrastructure issues, we have to dig into more logs. There is no straightforward indication of an issue. Health check kind of dashboards are not available. More AI would help us, and more optimization, since security products run more queries. The AI module could suggest solutions, optimizing queries or workload balancing. If the product itself advises on running queries during peak times, it would be similar to what ChatGPT currently offers. We see quite a few issues on stability. Even last week, we faced something, and identifying bottlenecks is not easy. We need more SMEs, and there is no mechanism to tell us about indexer or search head issues. Self-monitoring dashboards could be beneficial. The technical support still requires more improvement. Often, primary support takes a lot of time and forwards most solutions to the engineering side. The primary support team has very limited knowledge to provide.

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."
"We have majorly utilized Splunk Enterprise Security in SIEM and SOAR use cases, and the product is top-notch, with no problems."
"Gives full visibility on operational and security posture in our organization."
"Splunk Enterprise Security allows us to create custom dashboards by changing fonts and modifying widgets."
"Splunk Enterprise Security has had a positive impact on our organization by allowing us to detect new things with RBA."
"Splunk UBA is useful for fraud detection and for detection of APTs, advanced persistent threats."
"Out-of-the-box, it seems very powerful."
"Its dashboard is valuable, and if you have a good knowledge of how to create a dashboard, you can create any dashboard related to cybersecurity, and if fine-tuned, the alarms that are triggered for instant review are also very valuable and useful."
"I have noticed a return on investment with Splunk Enterprise Security, as it delivers substantial value for money."
 

Cons

"Graylog Security needs to incorporate security scorecards."
"Splunk isn't appropriate for smaller companies. It's too expensive."
"The UI could be better. This is applicable to Splunk in general. I know that a lot of people who get their hands on Splunk are hesitant to use it just because they find it overwhelming. There are a lot of options."
"We have had some issues with customer support on getting answers for Splunk Enterprise Security, but we have been able to escalate it and get resolution."
"It is a good product, but the Achilles heel for a lot of organizations is the cost model for it because it gets expensive. That's because the model is based on how much data it processes a day, which can be prohibitive, especially if you have a lot of data. A lot of customers may not be ready for the sticker shock on how to fully leverage the product. I realized that the reason for that is that when it was originally designed, it was kind of like a big data modeling application. If they want to have a bigger customer base, they can come out with subsets of their product that are focused on specific things and have different pricing models. It may help with the cost."
"Stability is there, but every release has some bugs."
"An area of improvement would be the licensing of the solution. They need a free license, which would allow faster lead times."
"Splunk could improve its default machine-learning models. Also, Splunk Enterprise's native threat intelligence isn't that good. I prefer a custom threat intelligence model."
"Our customers often complain that the price of Splunk is too high."
 

Pricing and Cost Advice

"I rate the tool's pricing a one out of ten."
"You will eat up whatever you purchase quickly. The level of insights that Splunk empowers is addictive."
"Splunk Enterprise Security is a worthwhile investment given the comprehensive range of features it offers."
"The price of this solution is expensive. However, it has great features. If you want a great solution you need to pay a price matching the features."
"The pricing depends on the bandwidth of an organization and is good compared to some SIEM tools. IBM, for example, is quite costly. But Microsoft Sentinel is notably cheaper."
"Splunk Enterprise Security is an expensive solution."
"It is not cheap."
"The tool's pricing model is great. You can choose between workloads or volume."
"Be upfront about your needs and expectations. Splunk is great to work with."
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Comparison Review

VS
Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees
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
Educational Organization
14%
Comms Service Provider
9%
Retailer
8%
Outsourcing Company
8%
Outsourcing Company
12%
Financial Services Firm
12%
Manufacturing Company
9%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business134
Midsize Enterprise76
Large Enterprise316
 

Questions from the Community

Ask a question
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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: September 2026.
915,341 professionals have used our research since 2012.