Brandwave

Microsoft Sentinel vs Splunk:Which is more popular?

In September 2026, Splunk had more branded searches than Microsoft Sentinel among SIEM platforms worldwide. Splunk had about 145,000 branded searches, while Microsoft Sentinel had 22,200. Splunk made up 27.8% of all SIEM platform searches we track, and Microsoft Sentinel accounted for 4.3%. When we asked ChatGPT and Google AI Overviews about SIEM platforms, both Microsoft Sentinel and Splunk appeared in all five answers. Microsoft Sentinel was mentioned before Splunk in four out of five answers.

Among SIEM platforms worldwide in September 2026

Who do people search for more?

Splunk, about 7 searches for every 1 for Microsoft Sentinel

Splunk 145K searchesMicrosoft Sentinel 22.2K searches

Who does AI mention more?

Both are mentioned in every answer we collected.

Microsoft Sentinel in 5 of 5Splunk in 5 of 5

Who does AI recommend more?

Microsoft Sentinel, named ahead of Splunk in 4 of 5 answers

Microsoft Sentinel first in 4Splunk first in 1

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Top SIEM platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, both Microsoft Sentinel and Splunk showed up in all five answers. Microsoft Sentinel was listed before Splunk in four of them.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Microsoft Sentinel1st
  2. Splunk2nd
  3. Google Security Operations3rd
  4. Elastic4th
  5. CrowdStrike Falcon Next-Gen SIEM5th
  6. Wazuh6th
  7. Sumo Logic7th
  8. Datadog–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Splunk5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Microsoft Sentinel5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Wazuh4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Elastic3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Google Security Operations3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • CrowdStrike Falcon Next-Gen SIEM2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Sumo Logic1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Datadog0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about SIEM platforms

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.

Is Microsoft Sentinel or Splunk more popular in search?

This chart shows how often people search Google for Microsoft Sentinel and Splunk by name. Each line represents a brand's share of searches for all eight SIEM platforms we track, month by month, from English-language searches worldwide.

Microsoft Sentinel and Splunk among SIEM platforms worldwide, by month

Share of searches by month for Splunk, Microsoft Sentinel. The figures are in the table below the chart.

View monthly share of searches table
MonthDatadogSplunkWazuhMicrosoft SentinelSumo LogicElasticGoogle Security OperationsCrowdStrike Falcon Next-Gen SIEM
Oct 202541.4%35.2%15.2%3.7%2.5%1.7%0.17%0.07%
Nov 202544.3%30.9%16.3%4%2.7%1.6%0.23%0.07%
Dec 202540%34.1%18%3.6%2.4%1.7%0.2%0.06%
Jan 202644.1%31%16.2%4%2.7%1.7%0.18%0.09%
Feb 202644.2%31.4%16.3%4%2.2%1.5%0.29%0.11%
Mar 202643.6%31.8%16%3.9%2.6%1.7%0.18%0.13%
Apr 202644.1%31.7%16.2%4%2.2%1.5%0.18%0.13%
May 202646.4%27.4%17.1%4.2%2.8%1.7%0.19%0.25%
Jun 202644.3%31.2%16.3%4%2.2%1.4%0.29%0.29%
Jul 202647%27.7%17.3%4.2%1.9%1.4%0.31%0.19%
Aug 202647.1%27.7%17.3%4.3%1.9%1.4%0.19%0.14%
Sep 202647.2%27.8%17.4%4.3%1.9%1.2%0.17%0.11%

How has the Microsoft Sentinel and Splunk comparison changed over the last 12 months?

3 findings
  • Splunk was ahead of Microsoft Sentinel in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Microsoft Sentinel’s share of searches among SIEM platforms worldwide moved from 3.7% to 4.3%, and its estimated monthly branded searches held steady at 22.2K.
  • Across the 12 months ending September 2026, Splunk’s share of searches among SIEM platforms worldwide moved from 35.2% to 27.8%, and its estimated monthly branded searches moved from 209K to 145K.

How did search popularity change for SIEM platforms worldwide in September 2026?

1 change

  1. Estimated monthly branded searches for Splunk worldwide fell 30.7% over 12 measured months, from 209K to 145K in September 2026.

How are branded searches counted?

4 search terms

Brandwave collects information about searches that people make online using Microsoft Sentinel’s and Splunk’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Microsoft Sentinel

2 branded search terms

  • microsoft sentinel
  • microsoftsentinel

Splunk

2 branded search terms

  • splunk
  • splunk siem

How the Brand Demand Index is measured

Other head-to-heads among SIEM platforms

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