Datadog Cloud SIEM was named in 4 of the 6 answers we collected, more than any other product, when we asked ChatGPT and Gemini to recommend SIEM software on 2026-08-04. We put six buyer questions to the two assistants, gave each one a live web search, and wrote down every product they named and every source domain they pulled. No single tool ran the table: even the front-runner missed a third of the six questions, and four other products tied close behind at 3 of 6 each.
Those four second-place names, each in 3 of 6 answers, were CrowdStrike Falcon Next-Gen SIEM, Exabeam, Fortinet FortiSIEM, and Rapid7 InsightIDR. Five more products landed 2 of 6: Graylog, IBM QRadar SIEM, Microsoft Sentinel, Securonix Unified, and Splunk. Everything else was a one-time mention. The result is flat and crowded: 27 distinct product labels came up across just six questions, and 17 of those labels showed up only once.
Some brands showed up under more than one name, and we have kept them separate because that is how the assistants wrote them. Splunk appeared three ways: Splunk (2 of 6), Splunk Enterprise (1 of 6), and Splunk Enterprise Security (1 of 6). Datadog split into Datadog Cloud SIEM (4 of 6) and plain Datadog (1 of 6). IBM QRadar, LogRhythm, and Blumira each split two ways as well. We are not adding these up, because a merged "Splunk = 4" is a number the measurement never produced, so we leave the labels exactly as the assistants said them.
The question changed the answer more than the category did
The six questions were small variations on one intent, but the word we swapped moved the list hard. The bare "best siem software" question returned the classic enterprise roster in a single answer: Splunk Enterprise, IBM QRadar SIEM, LogRhythm SIEM, Datadog Cloud SIEM, Fortinet FortiSIEM, CrowdStrike Falcon Next-Gen SIEM, and Rapid7 InsightIDR, seven names.
"best free siem software" threw that entire list out. It returned four names, and three of them appear nowhere else in the whole measurement: Wazuh, OSSEC, and Security Onion, all open-source, plus Graylog. Not one of the enterprise leaders from the generic query survived the word "free." If you sell an open-source or free-tier tool, that one word is the only one of the six questions that puts you on the board.
"most affordable siem software" did the opposite of what you would expect. It did not return cheap or free tools at all. It returned almost the same paid list as "what siem software should I use," with Rapid7 InsightIDR, CrowdStrike Falcon Next-Gen SIEM, Datadog Cloud SIEM, Fortinet FortiSIEM, Securonix Unified, Exabeam, and Splunk all in both answers. The only name the affordability question added was Blumira SIEM Starter, which appears in that one answer and nowhere else. To these two assistants, "affordable" means the usual commercial platforms, not the low-cost option.
"best siem software for small teams" had its own private roster too. Five of its eight names showed up in no other answer: Blumira, Adlumin MDR, ManageEngine Log360, Fidelis, and Thalian, sitting alongside Microsoft Sentinel, Graylog, and Datadog Cloud SIEM. The small-team framing is the only place across all six questions where those SMB-focused vendors got a look-in.
Put the single-appearance products together and the pattern is plain: 17 of the 27 labels each came from one question only. Wazuh, OSSEC, and Security Onion live only in "free." Blumira, Adlumin MDR, ManageEngine Log360, Fidelis, and Thalian live only in "small teams." Google Security Operations (SecOps), Panther, and Splunk Enterprise Security live only in "recommendations." If a buyer phrases the question the way you are not built for, you are invisible, no matter how strong you are on the phrasing you did win.
Where the answers actually came from
reddit.com was the single most-used source, feeding all 6 of the 6 answers. Every question the assistants answered, they reached for a Reddit thread. Community discussion, not a review directory, is the backbone of these SIEM recommendations.
The next most-used domains were vendor and roundup sites: exabeam.com (5 of 6 answers), sentinelone.com (5 of 6), connectwise.com (4 of 6), and paloaltonetworks.com (4 of 6). community.spiceworks.com fed 3 of 6 and quora.com fed 1 of 6, so community forums together showed up even more often than any single vendor blog.
Here is the insight worth the whole page. Exabeam's own domain, exabeam.com, fed 5 of the 6 answers, and Exabeam the product was named in 3 of them. Their content is doing double duty: it is the source the assistant reads and the product the assistant recommends. Panther did the same at smaller scale, with panther.com feeding 2 answers and Panther named in 1, and blumira.com fed the one answer that named Blumira SIEM Starter. Publishing the roundup and being in the roundup is the move that works.
The counter-case is just as instructive. sentinelone.com fed 5 answers and paloaltonetworks.com fed 4, but neither SentinelOne nor Palo Alto was named as a SIEM product in any of the six answers, and connectwise.com fed 4 answers without ConnectWise being named either. Their "best SIEM" articles are handing the assistants their competitors' names. Being cited as a source is not the same as being named as a product, and three of the most-used domains here prove it.
Review directories barely registered. G2 did not appear in a single answer. Capterra appeared once, in 1 of 6. Gartner appeared twice, in 2 of 6. Against Reddit's 6 of 6, the directories that vendors pour budget into were close to irrelevant to what ChatGPT and Gemini actually said.
What a SIEM vendor would do about this
The source list, not market share, decided who got named. Splunk is one of the largest SIEM vendors in the world and it landed 2 of 6 under its main label. Datadog Cloud SIEM led at 4 of 6. Open-source Wazuh outscored every enterprise leader in the one question where it appeared. If AI naming tracked revenue or install base, the order would look nothing like this.
So the work is source work. Get into the Reddit threads the assistants are already reading, since Reddit fed 6 of 6. Get onto the vendor and roundup pages that fed the rest, exabeam.com, sentinelone.com, paloaltonetworks.com, and connectwise.com among them. And copy Exabeam: publish your own comparison content, because the one domain that fed 5 answers also got its own product named 3 times. You are not fighting for market share here, you are fighting to sit in the roughly seven source pages each question pulls from.
The full list, counted
| Product | Named in | Share |
|---|---|---|
| Datadog Cloud SIEM | 4 of 6 | 67% |
| CrowdStrike Falcon Next-Gen SIEM | 3 of 6 | 50% |
| Exabeam | 3 of 6 | 50% |
| Fortinet FortiSIEM | 3 of 6 | 50% |
| Rapid7 InsightIDR | 3 of 6 | 50% |
| Graylog | 2 of 6 | 33% |
| IBM QRadar SIEM | 2 of 6 | 33% |
| Microsoft Sentinel | 2 of 6 | 33% |
| Securonix Unified | 2 of 6 | 33% |
| Splunk | 2 of 6 | 33% |
Splunk sits at 2 of 6 here under its main label only. Counting its two other spellings, Splunk Enterprise and Splunk Enterprise Security, each at 1 of 6, would still leave it behind Datadog Cloud SIEM, so we have not merged them into a single figure the data never showed.
One honest note to close
Glotier does not sell SIEM software, so we are correctly absent from every one of these answers, and we would not want it any other way. We ran this exactly the way we run it for a paying customer's own category: six real buyer questions, one live web search each, every product and every source written down. If you work at one of the 27 products above, or one of the many that never came up, your own AI visibility is a number you can actually see. Our check is free, needs no account, and takes about a minute.