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SentinelOne Singularity AI SIEM vs Stellar Cyber Open XDR comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 29, 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

SentinelOne Singularity AI ...
Ranking in Security Information and Event Management (SIEM)
7th
Average Rating
8.6
Reviews Sentiment
6.4
Number of Reviews
18
Ranking in other categories
AI Observability (6th)
Stellar Cyber Open XDR
Ranking in Security Information and Event Management (SIEM)
43rd
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
User Entity Behavior Analytics (UEBA) (29th), Endpoint Detection and Response (EDR) (57th), Network Traffic Analysis (NTA) (16th), Security Orchestration Automation and Response (SOAR) (25th), Network Detection and Response (NDR) (21st), Extended Detection and Response (XDR) (37th), Identity Threat Detection and Response (ITDR) (23rd)
 

Mindshare comparison

As of November 2026, in the Security Information and Event Management (SIEM) category, the mindshare of SentinelOne Singularity AI SIEM is 1.2%, up from 1.0% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 1.1%, down from 1.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
SentinelOne Singularity AI SIEM1.2%
Stellar Cyber Open XDR1.1%
Other97.7%
Security Information and Event Management (SIEM)
 

Featured Reviews

reviewer2915043 - PeerSpot reviewer
System Engineer at a consultancy with 11-50 employees
Centralized monitoring has improved threat detection speed and simplified alert investigations
It would be helpful if some alerts had cleaner, clearer explanations right away, such as suggesting next steps inside the alert, and fewer clicks to get from alert to raw event details would make the triage even faster. Integration could be more plug-and-play, and improving built-in guidance for new analysts would help cut the learning curve. Performance-wise, it is adequate for us, but easier bulk searches would make investigations smoother. It would be helpful for each alert to come with clear suggested next steps right inside the alert, so analysts do not have to guess or click around too much. Making integration more plug-and-play would smooth out setup for new data sources.
JC
Global Director, Commercial Operations at Promasecure LLC
Automated security monitoring increases efficiency, but market visibility needs improvement
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to cater to everyone effectively. While I have not encountered significant drawbacks so far, market penetration is challenging due to the product's newness, despite its flexibility and customization features. I find their user interface to be quite good.

Quotes from Members

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

Pros

"AI-powered threat hunting using natural language stands out the most to me because it allows me to investigate security data using plain language questions instead of manually writing complex queries, which reduces the time required for threat hunting and makes investigations more accessible for analysts who are less familiar with query languages."
"The beauty of the integration is that it integrates very smoothly with third-party tools, so we do not need to think about the parsers, coding, depending on the codes, or the software developers."
"After using SentinelOne Singularity AI SIEM, it has reduced our incident response time by forty to fifty percent compared to other tools."
"SentinelOne Singularity AI SIEM has positively impacted my organization by improving visibility, reducing investigation time, and helping the security team respond to incidents faster."
"The AI features of SentinelOne Singularity AI SIEM are absolutely perfect."
"SentinelOne Singularity AI SIEM has impacted my organization positively because I am observing some improvement, including real-time monitoring and real-time threat detection that help secure both our and the client's organization from anything suspicious or any malicious types of alerts."
"I assess the overall security posture of our organization after implementing SentinelOne Singularity AI SIEM as significantly improved."
"SentinelOne Singularity AI SIEM has improved our overall security posture and is reducing the workload on the SOC team."
"Stellar Cyber Open XDR offers these functionalities at a more affordable price, making it easier for me to position it with price-sensitive customers."
"It can integrate with almost any cybersecurity tool available in the market."
 

Cons

"The AI-generated investigations can occasionally require manual validation for complex incidents."
"It is quite good, but the only downside is that it is costly."
"In AI SIEM, the areas that have room for improvement are the parsers for third-party integrated data or for third-party data sources that are not native integrations, which could be made a bit easier."
"SentinelOne Singularity AI SIEM can catch SentinelAgent.exe as a potential threat, but it should not because it is the agent of SentinelOne itself."
"At the moment, I feel the pricing is a little bit on the higher side, but the tool is positioned in a place where risk is very high, and we do not want to take chances, so we are prepared to pay the premium."
"It would be helpful if some alerts had cleaner, clearer explanations right away, such as suggesting next steps inside the alert, and fewer clicks to get from alert to raw event details would make the triage even faster."
"Unfortunately, I was not happy with SentinelOne Singularity AI SIEM because it is not mature yet."
"SentinelOne Singularity AI SIEM can improve in the area of XDR, especially in the integration between SentinelOne and other solutions and components in the network, as it was not working well with the Fortinet firewall."
"I would rate the stability at about five to six. The platform requires some fine-tuning, especially when integrating data sources and creating connectors."
"Support is an issue because they have a limited number of resources."
 

Pricing and Cost Advice

Information not available
"It’s a single license platform."
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Top Industries

By visitors reading reviews
Outsourcing Company
22%
Media Company
9%
Manufacturing Company
7%
Comms Service Provider
6%
Manufacturing Company
14%
Outsourcing Company
10%
Comms Service Provider
10%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise6
Large Enterprise4
No data available
 

Questions from the Community

What needs improvement with SentinelOne Singularity AI SIEM?
My impression of the AI-driven threat detection capabilities is that it helps a little bit, but they need to tune it a bit because we are seeing too many false positives recently. Since we are a pa...
What is your primary use case for SentinelOne Singularity AI SIEM?
SentinelOne Singularity AI SIEM is a tool that we use to support our clients. Our organization is a service-based organization, so we use SIEM to provide services to software-based clients. We are ...
What advice do you have for others considering SentinelOne Singularity AI SIEM?
In my organization, approximately eighty people work with SentinelOne Singularity AI SIEM. Our clients vary in size; we have small businesses, medium enterprises, and large enterprises as well. Sen...
What is your experience regarding pricing and costs for Stellar Cyber Open XDR?
Pricing is a major benefit of Stellar Cyber Open XDR. I rate it between three and four on the cost scale. It offers functionalities at a significantly lower cost than rival products, enabling me to...
What needs improvement with Stellar Cyber Open XDR?
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to ca...
What is your primary use case for Stellar Cyber Open XDR?
I use Stellar Cyber Open XDR ( /products/stellar-cyber-open-xdr-reviews ) as a 24/7 security monitoring tool, especially for customers with large and medium networks. It eliminates the need for a d...
 

Overview

 

Sample Customers

Information Not Available
Sumitomo Chemical USA, PlastiPak Packaging, University of Denver, Large California State Agency, Large Midwestern American City
Find out what your peers are saying about SentinelOne Singularity AI SIEM vs. Stellar Cyber Open XDR and other solutions. Updated: September 2026.
920,929 professionals have used our research since 2012.