Extended detection and response · October 2026 Edition
Microsoft Defender XDR vs Stellar Cyber Open XDR
Five of fourteen models named Microsoft Defender XDR first on the direct prompt; two named Stellar Cyber Open XDR. Microsoft Defender XDR was named by fourteen of the fourteen models and Stellar Cyber Open XDR by eight and Microsoft Defender XDR carries 61 labels and Stellar Cyber Open XDR 13, so the shares are not directly comparable.
Named in seven categories this edition.
Named in three categories this edition.
First-choice share40%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate15%0%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#5A position in a field of 10; printed, not drawn.
Labels6113A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Microsoft Defender XDR reading right to left. Rank and label count are printed, not drawn.Sophos Intercept X was named alongside these two in twelve of the fourteen direct answers. Microsoft Defender XDR vs Sophos Intercept X · Microsoft Defender XDR vs CrowdStrike Falcon Insight XDR · Microsoft Defender XDR vs SentinelOne Singularity
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the extended detection and response page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
Microsoft Defender XDRFirst choices, of fourteen modelsStellar Cyber Open XDR
Direct52
Paraphrase60
Comparative40
Budget-constrained80
Scale-constrained20
Negative009 against Microsoft Defender XDR
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Across every category in the October 2026 Edition, Microsoft Defender XDR and Stellar Cyber Open XDR were named in the same answer twenty-seven times, of the 201 answers naming Microsoft Defender XDR and the 66 naming Stellar Cyber Open XDR. In those answers Stellar Cyber Open XDR took the first choice five times and Microsoft Defender XDR thirteen.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Microsoft Defender XDR and Stellar Cyber Open XDR stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | |||
| GPT-5.4 mini | | | | | | |
| Gemini 3.5 Flash | | | | | | |
| Perplexity Sonar | | |||||
| Grok 4.1 Fast | | | | | | |
| Mistral Small | | | | | ||
| DeepSeek V4 Flash | | | | | | |
| Llama 4 Maverick | | | ||||
| Qwen 3.7 Flash | | | | | | |
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | | | | ||
| MiniMax M2.5 | | | | | ||
| GPT-6 Luna | | | | | | |
| Muse Glimmer 30B | | | | |
Microsoft Defender XDR Stellar Cyber Open XDR first choice named as an alternative argued againstblank: not namedEach cell is one answer, Microsoft Defender XDR on the left and Stellar Cyber Open XDR on the right.The direct prompt
The plain question, one answer per model, grouped by where Microsoft Defender XDR and Stellar Cyber Open XDR stood in it.
Microsoft Defender XDR first, Stellar Cyber Open XDR not the choice
5 of 14 modelsStellar Cyber Open XDR was named in the answer but not as the choice, or not at all.GPT-5.4 miniCrowdStrike Falcon Insight XDR, Microsoft Defender XDR alternatives: Palo Alto Networks Cortex XDR
Grok 4.1 FastMicrosoft Defender XDR alternatives: CrowdStrike Falcon Insight XDR, SentinelOne Singularity, Sophos Intercept X
GLM 4.7 FlashXMicrosoft Defender XDR alternatives: CrowdStrike Falcon Insight XDR, Palo Alto Networks Cortex XDR, SentinelOne Singularity, Sophos Intercept X
MiniMax M2.5Microsoft Defender XDR alternatives: CrowdStrike Falcon Insight XDR, Sophos Intercept X
GPT-6 LunaMicrosoft Defender XDR alternatives: CrowdStrike Falcon Insight XDR, Palo Alto Networks Cortex XDR
Stellar Cyber Open XDR first, Microsoft Defender XDR an alternative
2 of 14 modelsMicrosoft Defender XDR was named in the answer but not as the choice, or not at all.Llama 4 MaverickSophos Intercept X, Stellar Cyber Open XDR alternatives: Microsoft Defender XDR
Muse Glimmer 30BSophos Intercept X, Stellar Cyber Open XDR alternatives: Bitdefender GravityZone XDR, Microsoft Defender XDR, Ontinue
Neither was the first choice, one was named
6 of 14 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5Sophos Intercept X alternatives: Microsoft Defender XDR, Rapid7 InsightIDR, SentinelOne Singularity
Gemini 3.5 FlashSophos Intercept X, Sophos MDR alternatives: Cynet 360 Auto XDR, Microsoft Defender for Business / Defender XDR, SentinelOne Singularity, Stellar Cyber Open XDR
Perplexity SonarSophos Intercept X alternatives: SentinelOne Singularity, Stellar Cyber Open XDR
Mistral SmallSophos Intercept X alternatives: Stellar Cyber Open XDR
DeepSeek V4 FlashSophos Intercept X alternatives: CrowdStrike Falcon Insight XDR, Microsoft Defender XDR, SentinelOne Singularity, Stellar Cyber Open XDR
Qwen 3.7 FlashSophos Intercept X alternatives: Microsoft Defender XDR, SentinelOne Singularity
Neither was named
1 of 14 modelsThe answer made no first choice from these two in this category.Kimi K2SentinelOne Singularity, Sophos Intercept X alternatives: Microsoft Defender for Endpoint
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Microsoft Defender XDR leads by twenty-five points.
Microsoft Defender XDR25%#1 of 11Stellar Cyber Open XDR0%#– of 11Mid-marketThe figures above
Microsoft Defender XDR leads by thirty-seven points.
Microsoft Defender XDR40%#1 of 10Stellar Cyber Open XDR4%#5 of 10Enterprise
Microsoft Defender XDR leads by thirty-eight points.
Microsoft Defender XDR44%#1 of 8Stellar Cyber Open XDR6%#3 of 8What the models said about Microsoft Defender XDR
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“it is recommended to avoid buying into the full enterprise-grade Microsoft Defender XDR” Llama 4 Maverick · negative prompt · hard negative
“Microsoft documents that some Defender TVM tables are not ingested into Microsoft Sentinel, so queries can behave differently across platforms.” GPT-5.4 mini · negative prompt · soft negative
“its correlation capabilities deteriorate significantly if your environment isn't fully integrated into the Microsoft 365 and Azure ecosystem” Gemini 3.5 Flash · negative prompt · soft negative
“Microsoft Defender XDR is the most cost-effective entry into enterprise-grade XDR for organizations already running Microsoft 365.” Claude Haiku 4.5 · budget prompt · first choice
“I'd recommend starting with Microsoft Defender XDR if you're already in the Microsoft ecosystem, or CrowdStrike Falcon” MiniMax M2.5 · paraphrase prompt · first choice
“For a company on a tight budget, the best value is usually Microsoft Defender—especially if you already use Microsoft 365.” GPT-6 Luna · budget prompt · first choice
What the models said about Stellar Cyber Open XDR
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Two of two in this category shown.
“Stellar Cyber Open XDR is repeatedly highlighted for mid-market teams needing enterprise capabilities without vendor lock-in” Muse Glimmer 30B · direct prompt · first choice
“such as Sophos Intercept X or Stellar Cyber Open XDR. These platforms are designed for mid-market teams” Llama 4 Maverick · direct prompt · first choice
Also compared
Microsoft Defender XDR vs Sophos Intercept XMicrosoft Defender XDR vs CrowdStrike Falcon Insight XDRMicrosoft Defender XDR vs SentinelOne SingularitySophos Intercept X vs Stellar Cyber Open XDRCrowdStrike Falcon Insight XDR vs Stellar Cyber Open XDRSentinelOne Singularity vs Stellar Cyber Open XDRAll ten head-to-head pages and the full XDR standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.