Graylog Enterprise vs Splunk Enterprise Security comparison

Why PeerSpot?

Graylog and Splunk are both solutions in the Log Management category. Graylog is ranked #6 with an average rating of 8.0, while Splunk is ranked #1 with an average rating of 8.5. Graylog holds a 2.5% mindshare in Log Management, compared to Splunk’s 7.3% mindshare. Additionally, 96% of Graylog users are willing to recommend the solution, compared to 94% of Splunk users who would recommend it.

Graylog Enterprise

Read 31 Graylog Enterprise reviews

9,249 Views
9,157 Comparison Views

96% willing to recommend

Splunk Enterprise Security

Read 468 Splunk Enterprise Security reviews

77,677 Views
37,285 Comparison Views

94% willing to recommend

Graylog Enterprise

Splunk Enterprise Security

Comparison Buyer's Guide

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Executive SummaryUpdated on Mar 15, 2026

Splunk Enterprise Security and Graylog Enterprise compete in the SIEM category. Splunk appears to have the upper hand with its extensive feature set and customizability.

Features: Splunk Enterprise Security offers comprehensive operational intelligence, rapid data availability from various sources, and flexible data handling through schema-on-read and search processing language. Additionally, it excels in log correlation, visualization, and threat detection with vast pre-defined use cases. Graylog Enterprise, while less feature-rich, efficiently handles log management, provides fast search capabilities, and integrates well with various systems while offering some data visualization options.

Room for Improvement: Splunk Enterprise Security could enhance its visualization capabilities, simplify its interface, and resolve performance-related issues. Users also wish for easier deployment and better user access management. Graylog Enterprise needs improvements in integration capabilities and more advanced visualization features to match its competitors.

Ease of Deployment and Customer Service: Splunk Enterprise Security offers diverse deployment models, including on-premises and cloud environments, catering to various organizational needs. However, its technical support receives mixed reviews in terms of response times and problem-solving effectiveness. Graylog Enterprise is easier to deploy, particularly for those with in-house expertise, as it primarily serves on-premises environments with a focus on straightforward operations but lacks extensive support channels.

Pricing and ROI: Splunk Enterprise Security is often seen as expensive due to its robust feature set and scalability, presenting challenges for small organizations. However, it's valued in large-scale environments. Graylog Enterprise, with its open-source model, presents a more economical choice for budget-conscious users, although it may demand more custom development to fulfill specific needs.

To learn more, read our detailed Graylog Enterprise vs. Splunk Enterprise Security Report (Updated: September 2026).

Buyer's Guide

Graylog Enterprise vs. Splunk Enterprise Security

September 2026

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Helped 920,769 peers since 2012

Review summaries and opinions

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

ROI

Sentiment score

4.7

Graylog Enterprise streamlines log management, enhancing efficiency, reducing costs and improving incident response and bug detection times.

Sentiment score

5.8

Splunk Enterprise Security enhances detection, efficiency, and cost savings but ROI measurement varies due to implementation challenges.

Graylog allows our security team and IT engineers quick access to information, as it all goes to one place.

reviewer2704128

Head of Cyber Security & CTO at a tech services company with 51-200 employees

There have been financial savings as well and increased reliability, because I don't depend on a physical server hosted in my office.

Marcelo Washington

Network Administrator at a educational organization with 51-200 employees

Since I began using Graylog Enterprise, I perceive a return on investment, including a fifteen percent reduction in incident response time and twenty percent less time to find bugs.

Marcel Nagm

Desenvolvedor Javascript Junior at a educational organization with 10,001+ employees

For more quotes and insights, download the Graylog Enterprise report

The documentation for Splunk Enterprise Security is outstanding. It is well-organized and easy to access.

Akif Arayici

DevOps&Cloud Engineer Mentee at CertDirectory.io

We couldn't calculate what would have been the cost if they had actually gotten compromised; however, they were in the process, so every investment was returned immediately.

Dennis Mohn

Business Development Manager at Axians Germany

On average, my SecOps team takes probably at least a quarter of the time, if not more, to remediate security incidents with Splunk Enterprise Security compared to our previous solution.

Michael Waite

IT Orchestration Architect at Penn State University

For more quotes and insights, download the Splunk Enterprise Security report

Customer Service

Sentiment score

5.2

Graylog Enterprise's customer support is highly rated for responsiveness, though Community users seek help through forums due to limited support.

Sentiment score

6.3

Splunk Enterprise Security support is praised for responsiveness and helpfulness, though some users desire quicker response and escalation improvements.

Customer support for Graylog Enterprise is excellent.

Marcelo Washington

Network Administrator at a educational organization with 51-200 employees

I would rate customer support a ten on a scale from one to ten because they were always very proactive with us, helping with whatever was required.

GabrielSousa

Consultor De Segurança Da Informação at a tech vendor with 10,001+ employees

The support experience generally depends on the issue complexity, but the team was very responsive and their technical guidance was also very good and constant.

Vikram Chakravarthy

Cyber Security Engineer Ii (Vulnerability & Threat Management) at FICO

For more quotes and insights, download the Graylog Enterprise report

We have paid for Splunk support, and we’re not on the free tier hoping for assistance; we are a significant customer and invest a lot in this service.

reviewer2746377

Senior System Administrator at a tech services company with 5,001-10,000 employees

I have had nothing but good experiences with Splunk support, receiving timely and helpful replies.

Adam Santilli

Cyber Security Associate at SAP

We've had great customer success managers who have helped us navigate scaling from 600 gigs to 30 terabytes.

MatthewSnyder

Principal Engineer at Aviatrix

For more quotes and insights, download the Splunk Enterprise Security report

Scalability Issues

Sentiment score

4.6

Graylog Enterprise scales well, handling large data volumes effectively, though resource-intensiveness and documentation need improvement for optimal performance.

Sentiment score

7.2

Splunk Enterprise Security offers robust scalability, particularly in cloud environments, though expansion costs may impact budget considerations.

More up-to-date documentation on how to do high ingestion and high search scenarios, including recommendations for configuration and deployment, would be useful.

reviewer2704128

Head of Cyber Security & CTO at a tech services company with 51-200 employees

I haven't needed to scale so far, but I believe it will meet my needs when I expand in the future.

Marcelo Washington

Network Administrator at a educational organization with 51-200 employees

The scalability of Graylog Enterprise is very good; it always responds to needs at the right time.

Marcel Nagm

Desenvolvedor Javascript Junior at a educational organization with 10,001+ employees

For more quotes and insights, download the Graylog Enterprise report

We currently rely on disaster recovery and backup recovery, which takes time to recover, during which you're basically blind, so I'm pushing my leadership team to switch over to a clustering environment for constant availability.

David-Alfonso

IT Security Engineer at a financial services firm with 201-500 employees

It is one of the things that separates it from other tooling, and if not, it is the most scalable solution out there.

reviewer2778402

Systems Development Engineer at a tech vendor with 10,001+ employees

We have found no negative impact from scaling.

Shubham Tiwari

Soc Analyst at Softcell Technologies Global Pvt.Ltd

For more quotes and insights, download the Splunk Enterprise Security report

Stability Issues

Sentiment score

8.1

Graylog Enterprise is stable but may experience performance issues under heavy load or specific tasks like index rotation.

Sentiment score

7.7

Splunk Enterprise Security is stable, reliable, effective with large data, but may require proper configuration and resource management.

Graylog Enterprise is completely stable.

Marcelo Washington

Network Administrator at a educational organization with 51-200 employees

I believe Graylog Enterprise is stable; it provides a lot of information about alerts, allowing good visibility of the client's environment.

Gabriel R. Sousa

Consultor De Informação Plena at Protivity Brasil

Graylog Enterprise is stable.

GabrielSousa

Consultor De Segurança Da Informação at a tech vendor with 10,001+ employees

For more quotes and insights, download the Graylog Enterprise report

They test it very thoroughly before release, and our customers have Splunk running for months without issues.

reviewer2701950

Splunk System Engineer at a non-tech company with 11-50 employees

Splunk has been very reliable and very consistent.

MatthewSnyder

Principal Engineer at Aviatrix

We need more SMEs, and there is no mechanism to tell us about indexer or search head issues.

Sathis-Kumar

Senior Manager at Bank of America

For more quotes and insights, download the Splunk Enterprise Security report

Room For Improvement

Graylog Enterprise requires scalability, cost efficiency, and ease of use while enhancing alarms, AI capabilities, and integration with systems.

Users of Splunk Enterprise Security seek improved integrations, UI, customization, automation, training, pricing, support, threat intelligence, and resource management.

Mainly, it's about integrations: being able to parse different sources and output to different systems easier.

reviewer2704128

Head of Cyber Security & CTO at a tech services company with 51-200 employees

I understand that Graylog Enterprise is not a SIEM; it is a log management tool. However, it was able to meet my needs for security log monitoring specifically.

Victor Duarte Ferreira Guedes

Specialist at Vihira Gets

Writing the rules can be very tedious, especially since the documentation isn't extensive on how the functions provided for these rules work.

Atassi Kalo

Security Analyst at Netsharqs cybersecurity GmbH

For more quotes and insights, download the Graylog Enterprise report

Improving the infrastructure behind Splunk Enterprise Security is vital—enhanced cores, CPUs, and memory should be prioritized to support better processing power.

Mustafa Ameen

Resident Consultant (Security Analyst) at helpag

Splunk Enterprise Security is not something that automatically picks things; you have to set up use cases, update data models, and link the right use cases to the right data models for those detections to happen.

reviewer2704098

Security & Risk Analyst at a computer software company with 1,001-5,000 employees

For any future enhancements or features, such as MLTK and SOAR platform integration, we need more visibility, training, and certification for the skilled professionals who are working.

Madhu Gurindapalli

Security Consultant at Matiq

For more quotes and insights, download the Splunk Enterprise Security report

Setup Cost

Graylog provides a free version for small needs and a cost-effective Enterprise version for larger, scalable requirements.

Splunk Enterprise Security is costly but valued for robust features, though smaller organizations seek cheaper alternatives due to unpredictable costs.

It costs approximately $50,000 or $60,000 for 100 GB a day.

reviewer2704128

Head of Cyber Security & CTO at a tech services company with 51-200 employees

Regarding my experience with the price, configuration cost, and licensing of Graylog Enterprise, I consider that the cost-benefit ratio is very good when compared.

Marcel Nagm

Desenvolvedor Javascript Junior at a educational organization with 10,001+ employees

I worked in the SOC environment focusing more on analyzing alerts, but I was able to understand the configurations well, including setting up use cases and automations.

Gabriel R. Sousa

Consultor De Informação Plena at Protivity Brasil

For more quotes and insights, download the Graylog Enterprise report

I saw clients spend two million dollars a year just feeding data into the Splunk solution.

ROBERT-CHRISTIAN

CTO at a tech vendor with 10,001+ employees

The platform requires significant financial investment and resources, making it expensive despite its comprehensive features.

Hamada Elewa

System Engineer - Security Presales at Raya Integration

I find it to be affordable, which is why every industry uses it.

Swayam Sopnic Nayak

Vice President Research And Development at OSINT Ambition

For more quotes and insights, download the Splunk Enterprise Security report

Valuable Features

Graylog Enterprise offers advanced log management, real-time access, and integrations, enhancing data analysis, monitoring, and user experience efficiency.

Splunk Enterprise Security enhances threat management with real-time detection, integration, and customizable tools, improving response and analyst productivity.

The Graylog features that have proven to be most beneficial for our data analysis in particular are that we tend to use it as a big data store, so we have the correlation rules that, if something matches under certain conditions, it raises an alarm.

reviewer2704128

Head of Cyber Security & CTO at a tech services company with 51-200 employees

The best feature of Graylog Enterprise is its high-performance search engine that provides fast, flexible, and scalable analysis of machine data or pod data.

reviewer2789460

Junior Dev Ops Engineer at a consultancy with 11-50 employees

Monitoring improved by up to 80 percent because of having all the logs centralized.

reviewer2806998

Platform Engineering at a comms service provider with 1,001-5,000 employees

For more quotes and insights, download the Graylog Enterprise report

This capability is useful for performance monitoring and issue identification.

GautamKar

Staff Performance Engineer at ServiceNow

I assess Splunk Enterprise Security's insider threat detection capabilities for helping to find unknown threats and anomalous user behavior as great.

reviewer2701950

Splunk System Engineer at a non-tech company with 11-50 employees

Splunk Enterprise Security provides the foundation for unified threat detection, investigation, and response, enabling fast identification of critical issues.

Ashiq Ashraf

Specialist-Infrastructure Opertions at Allianz Technology

For more quotes and insights, download the Splunk Enterprise Security report

Categories and Ranking

Graylog Enterprise

Ranking in Log Management

6th

Average Rating

8.0

Reviews Sentiment

5.8

Number of Reviews

Ranking in other categories

No ranking in other categories

Splunk Enterprise Security

Ranking in Log Management

1st

Average Rating

8.4

Reviews Sentiment

7.1

Number of Reviews

468

Ranking in other categories

Security Information and Event Management (SIEM) (1st), IT Operations Analytics (1st)

Mindshare comparison

As of November 2026, in the Log Management category, the mindshare of Graylog Enterprise is 2.5%, down from 5.8% compared to the previous year. The mindshare of Splunk Enterprise Security is 7.3%, down from 7.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Log Management Mindshare Distribution
Product	Mindshare (%)
Splunk Enterprise Security	7.3%
Graylog Enterprise	2.5%
Other	90.2%

Log Management

Featured Reviews

NicolaeCIornii

Security Officer at JSC "Moldtelecom" S.A.

Log analysis has become clearer and faster but visualization and extensibility still need work

The problem was with the complexity and the cost to add extensions. We found this very expensive to buy another version with additional features. I think that Graylog Enterprise does not have customizable dashboards. I did not see them in Graylog Enterprise because most of the time we used the open source free version, which is limited. I think Graylog Enterprise should improve some things that they have in the paid version and perhaps provide users with a menu that gives examples of parsing logs and draws graphics so that people do not need to improve another system such as Grafana. This would be interesting. When it comes to functionalities, I found the log management in Graylog Enterprise acceptable. It is very simple to use and to collect logs. It has support for different protocols and different ports, and the sidecar is easy to use. However, in visualization, I think it needs to be much better.

Read full review

Sathis-Kumar

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.

Read full review

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Comparison Review

Vinod Shankar

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…

Read full review

Top Industries

By visitors reading reviews

Comms Service Provider

11%

Computer Software Company

10%

Financial Services Firm

Manufacturing Company

Outsourcing Company

12%

Financial Services Firm

11%

Manufacturing Company

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	13
Midsize Enterprise	6
Large Enterprise	13

By reviewers
Company Size	Count
Small Business	135
Midsize Enterprise	74
Large Enterprise	320

Questions from the Community

What is your experience regarding pricing and costs for Graylog?

I find the pricing, setup cost, and licensing of Graylog Enterprise to be somewhat expensive. However, it is cost-effective compared to other larger platforms. The pricing depends on factors such a...

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What needs improvement with Graylog?

One improvement I want to see in Graylog Enterprise is artificial intelligence to help us automatically identify unusual patterns and suggest possible causes. I also want to see more ready-made das...

See all answers

What is your primary use case for Graylog?

Graylog Enterprise serves as my main centralized log management solution. In our environment, we have many systems that generate logs, including servers, applications, network devices, and security...

See all answers

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...

See all answers

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 ...

See all answers

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...

See all answers

Comparisons

LogRhythm SIEM vs Graylog Enterprise

Compared 6% of the time

Grafana Loki vs Graylog Enterprise

Compared 5% of the time

IBM Security QRadar vs Graylog Enterprise

Compared 4% of the time

Elastic Security vs Graylog Enterprise

Compared 4% of the time

syslog-ng by One Identity vs Graylog Enterprise

Compared 4% of the time

More Graylog Enterprise Competitors

IBM Security QRadar vs Splunk Enterprise Security

Compared 9% of the time

Sentinel vs Splunk Enterprise Security

Compared 7% of the time

Elastic Security vs Splunk Enterprise Security

Compared 2% of the time

Splunk AppDynamics vs Splunk Enterprise Security

Compared 2% of the time

ManageEngine EventLog Analyzer vs Splunk Enterprise Security

Compared 1% of the time

More Splunk Enterprise Security Competitors

Product Reports

Buyer's Guide

Graylog Enterprise

October 2026

Download Graylog Enterprise product report

Buyer's Guide

Splunk Enterprise Security

October 2026

Download Splunk Enterprise Security product report

Also Known As

Graylog2

No data available

Overview

Graylog Enterprise, recognized for log collection, real-time search, and enriched data handling, offers an open-source framework that integrates seamlessly with Elasticsearch. Its user-centric interface streamlines data correlation and log aggregation, supporting both backend services and comprehensive monitoring needs.

Graylog Enterprise stands out for its stability and powerful log management capabilities, facilitating efficient log aggregation, real-time updates, and data analytics. Users benefit from its plugin-based alerting, user-friendly interface, and support for microservices, including Docker integration. The ability to search in detail, flexible API integration, and data enrichment features are highly valued. Challenges include collector application issues, desired visualization enhancements, and authentication integration improvements. Users seek advancements in UI customization, backup functions, and easier rule creation.

What are Graylog Enterprise's most important features?

Log Collection: Efficiently aggregates and handles diverse logs.
Real-Time Search: Provides immediate log data access.
Custom Alerts: Plugin-based alerting for tailored notifications.
Dashboard Enhancements: Improved visualization for data insights.
Data Enrichment: Adds value through detailed log analysis.

What benefits and ROI can users expect?

Audit Trail Support: Essential for compliance in financial sectors.
Security Event Correlation: Enables incident analysis and response.
Faster Issue Identification: Speeds up troubleshooting with detailed visualization.
API Flexibility: Seamless integration across systems and environments.
Comprehensive Monitoring: Centralized log management enhances oversight.

In industrial use, Graylog Enterprise is crucial for audit trailing in financial sectors, facilitating security event identification and error monitoring. Backend teams leverage real-time analytics for swift issue resolution, while developers appreciate the comprehensive log visualization enabled by Docker integration for microservice management.

Graylog

Splunk Enterprise Security delivers powerful log management, rapid searches, and intuitive dashboards, enhancing real-time analytics and security measures. Its advanced machine learning and wide system compatibility streamline threat detection and incident response across diverse IT environments.

Splunk Enterprise Security stands out in security operations with robust features like comprehensive threat intelligence and seamless data integration. Its real-time analytics and customizable queries enable proactive threat analysis and efficient incident response. Integration with multiple third-party feeds allows detailed threat correlation and streamlined data visualization. Users find the intuitive UI and broad compatibility support efficient threat detection while reducing false positives. Despite its strengths, areas such as visualization capabilities and integration processes with cloud environments need enhancement. Users face a high learning curve, and improvements in automation, AI, documentation, and training are desired to maximize its potential.

What Are the Key Features of Splunk Enterprise Security?

Log Management: Efficiently manages and organizes a vast amount of logs for better data handling.
Rapid Data Search: Quickly retrieves relevant data for fast decision-making.
Flexible Dashboards: Customizable dashboards provide clear data visualization.
Comprehensive Threat Intelligence: Offers detailed insights to preemptively defend against threats.
Real-Time Analytics: Analyzes data in real-time to enhance response times.
Integration with Third-Party Feeds: Streamlines information flow from multiple sources.

What Benefits Should Users Investigate in Reviews?

Efficient Incident Response: Enhances the ability to respond promptly to threats.
False Positive Reduction: Minimizes incorrect threat alarms, making monitoring more efficient.
Threat Detection Speed: Accelerates the identification and evaluation of security threats.
Cost-Effectiveness: Potential savings through better licensing options and operational efficiency.
User Adaptability: Enhancements in documentation and training resources aid in overcoming the learning curve.

In specific industries like finance and healthcare, Splunk Enterprise Security is instrumental for log aggregation, SIEM functionalities, and compliance monitoring. Companies leverage its capabilities for proactive threat analysis and response, ensuring comprehensive security monitoring and integration with various tools for heightened operational intelligence.

Splunk

Sample Customers

Blue Cross Blue Shield, eBay, Cisco, LinkedIn, SAP, King.com, Twilio, Deutsche Presse-Agentur

Splunk has more than 7,000 customers spread across over 90 countries. These customers include Telenor, UniCredit, ideeli, McKenney's, Tesco, and SurveyMonkey.

Buyer's Guide

Graylog Enterprise vs. Splunk Enterprise Security

September 2026

Free Report: Graylog Enterprise vs. Splunk Enterprise Security

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