# Extended detection and response: what AI models recommend, September 2026

IT AI Recommendation Index, September 2026 Edition. Asked as "XDR platform" and as "extended detection and response solution", six framings each, to twelve models with search on, on behalf of a mid-market B2B company. Page: https://it-ai-index.com/security/extended-detection-and-response/

**Standing:** Microsoft Defender XDR leads with 63% of first choices; verdict clear leader. 41 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | Microsoft Defender XDR | 63% | 11% | 57 |
| 2 | Coro | 7% | 8% | 13 |
| 3 | SentinelOne Singularity | 5% | 5% | 37 |
| 4 | Bitdefender | 5% | 6% | 17 |
| 5 | CrowdStrike Falcon XDR | 2% | 7% | 14 |
| 6 | Sophos Intercept X | 2% | 14% | 14 |
| 7 | Stellar Cyber | 0% | 5% | 19 |
| 8 | Palo Alto Networks Cortex XDR | 0% | 21% | 29 |
| 9 | CrowdStrike Falcon | 0% | 28% | 29 |
| 10 | Trend Vision One | 0% | 24% | 21 |
| 11 | Cisco XDR | 0% | 24% | 17 |

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: no first choice
- GPT-5.4 mini: Microsoft Defender XDR; alternatives Cisco XDR, CrowdStrike Falcon, Palo Alto Networks Cortex XDR, SentinelOne Singularity
- Gemini 3.5 Flash: Sophos Intercept X + Sophos MDR; alternatives CrowdStrike Falcon, Microsoft Defender XDR, SentinelOne Singularity, Stellar Cyber
- Perplexity Sonar: CrowdStrike Falcon XDR, Microsoft Defender XDR; alternatives Rapid7 InsightIDR, SentinelOne Singularity, Stellar Cyber Open XDR
- Grok 4.1 Fast: Microsoft Defender XDR; alternatives Bitdefender GravityZone XDR, CrowdStrike Falcon XDR, Palo Alto Networks Cortex XDR, Sophos Intercept X
- Mistral Small: Bitdefender; alternatives Microsoft Defender XDR, Ontinue, Stellar Cyber
- DeepSeek V4 Flash: Microsoft Defender XDR, SentinelOne Singularity; alternatives Bitdefender, Ontinue, Sophos Intercept X
- Llama 4 Maverick: Bitdefender; alternatives Ontinue
- Qwen 3.7 Flash: Microsoft Defender XDR, Sophos; alternatives CrowdStrike Falcon, SentinelOne Singularity
- Kimi K2: Microsoft Defender XDR; alternatives Bitdefender, Cynet, Sophos Intercept X
- GLM 4.7 FlashX: Microsoft Defender XDR; alternatives Bitdefender GravityZone XDR, Coro, CrowdStrike Falcon XDR, Elastic Security
- MiniMax M2.5: Microsoft Defender XDR; alternatives Bitdefender, CrowdStrike Falcon XDR, Ontinue, Palo Alto Networks Cortex XDR

## Sources the answers cite

66 of 72 answers came back with a source list, from 12 of 12 models. Sites named in the most answers:

- gbhackers.com: 44 answers, 75 citations
- cyberpress.org: 40 answers, 49 citations
- cybersecuritynews.com: 31 answers, 36 citations
- paloaltonetworks.com: 30 answers, 39 citations
- gartner.com: 21 answers, 32 citations
- decryptiondigest.com: 21 answers, 22 citations
- esecurityplanet.com: 20 answers, 20 citations
- guideflow.com: 18 answers, 18 citations

Pages named in the most answers:

- https://gbhackers.com/best-xdr-platforms-compared (39 answers)
- https://cyberpress.org/xdr-platforms-by-business-size (38 answers)
- https://gbhackers.com/best-managed-xdr-compared (28 answers)
- https://cybersecuritynews.com/best-xdr-platforms (26 answers)
- https://paloaltonetworks.com/cyberpedia/xdr-solutions (24 answers)
- https://decryptiondigest.com/blog/best-xdr-platforms-2026 (20 answers)
- https://esecurityplanet.com/products/xdr-security-solutions (19 answers)
- https://gartner.com/reviews/market/extended-detection-and-response (18 answers)
- https://guideflow.com/blog/xdr-platform (18 answers)
- https://aimultiple.com/xdr-solutions (15 answers)

## Warned against

- CrowdStrike Falcon: 8 of 29 labels negative. "deeply embedded within massive, enterprise-grade licensing suites like Microsoft and CrowdStrike... requires an exorbitant financial commitment" (Claude Haiku 4.5, negative prompt)
- Microsoft Defender XDR: 6 of 57 labels negative. "Vendor-native suites if you are not already standardized on that vendor: Microsoft Defender XDR is especially compelling in Microsoft 365 estates... outside those contexts, fit can be much weaker." (Perplexity Sonar, negative prompt)
- Palo Alto Networks Cortex XDR: 6 of 29 labels negative. "Complex policy tuning/detections leading to high false positives/noise (requires expertise), steep learning curve ... aggressive pricing" (Grok 4.1 Fast, negative prompt)
- Trend Vision One: 5 of 21 labels negative. "If you're looking for alternatives to Trend Micro, consider options like CrowdStrike Falcon, Microsoft Defender XDR + Sentinel, Palo Alto Networks Cortex XDR, SentinelOne Singularity, and others." (Llama 4 Maverick, negative prompt)

## Record

- Method: https://it-ai-index.com/methodology/
- Raw judge labels and full responses: https://it-ai-index.com/data/
- License: CC BY 4.0. Cite as IT AI Recommendation Index, September 2026 Edition, it-ai-index.com.