# Microsoft Defender for IoT vs Armis Centrix: which do AI models recommend for ot/iot security, October 2026

IT AI Recommendation Index, October 2026 Edition, OT and IoT security. One of fourteen models named Microsoft Defender for IoT first on the direct prompt; one named Armis Centrix. Page: https://it-ai-index.com/security/ot-and-iot-security/microsoft-defender-for-iot-vs-armis-centrix/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Microsoft Defender for IoT | 21% | #1 of 9 | 21% | 42 | 13 of 14 |
| Armis Centrix | 6% | #5 of 9 | 13% | 31 | 14 of 14 |

## The direct prompt, model by model

- Gemini 3.5 Flash: microsoft defender for iot first (first choices: Fortinet OT Security Platform, Microsoft Defender for IoT) (alternatives: Claroty xDome, Nozomi Networks Guardian)
- Kimi K2: armis centrix first (first choices: Armis Centrix, Claroty xDome) (alternatives: Fortinet OT Security Platform, Microsoft Defender for IoT, Nozomi Networks Guardian)
- GPT-5.4 mini: neither first, one named (first choices: Claroty xDome) (alternatives: Armis Centrix, Dragos Platform)
- DeepSeek V4 Flash: neither first, one named (first choices: Claroty xDome) (alternatives: Microsoft Defender for IoT, Nozomi Networks Guardian, Palo Alto Networks Industrial OT Security)
- MiniMax M2.5: neither first, one named (first choices: Radiflow360) (alternatives: Armis Centrix, Claroty xDome, Nozomi Networks Guardian, Tenable OT Security)
- Claude Haiku 4.5: neither named (first choices: Claroty xDome, Nozomi Networks Guardian) (alternatives: Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks, Tenable OT Security)
- Perplexity Sonar: neither named (first choices: Radiflow360) (alternatives: Claroty xDome, Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks)
- Grok 4.1 Fast: neither named (first choices: Claroty xDome) (alternatives: Dragos Platform, Fortinet OT Security Platform, Nozomi Networks Guardian, Palo Alto Networks)
- Mistral Small: neither named (first choices: Dragos Platform) (alternatives: Claroty xDome, Nozomi Networks Guardian)
- Llama 4 Maverick: neither named (first choices: Palo Alto Networks) (alternatives: Claroty xDome, Forcepoint)
- Qwen 3.7 Flash: neither named (first choices: Industrial AI) (alternatives: Claroty xDome, Nozomi Networks Guardian, Tenable.io OT)
- GLM 4.7 FlashX: neither named (first choices: Fortinet OT Security Platform) (alternatives: Dragos Platform, Nozomi Networks Guardian)
- GPT-6 Luna: neither named (first choices: Nozomi Networks Vantage) (alternatives: Claroty xDome, Dragos Platform)
- Muse Glimmer 30B: neither named (first choices: Radiflow360) (alternatives: Claroty xDome, Nozomi Networks Guardian)

## What the models said about Microsoft Defender for IoT

- "Avoid if budget is tight: Nozomi Networks and Microsoft Defender for IoT" (Perplexity Sonar, budget prompt, hard negative)
- "I'd avoid starting a new deployment that depends on this console... That's a caution about the legacy console, not a blanket warning against Microsoft Defender for IoT." (GPT-6 Luna, negative prompt, soft negative)
- "These are IT-security vendors extending into OT. Their effectiveness depends on how well their OT findings integrate with your existing SOC" (Mistral Small, negative prompt, soft negative)
- "For most mid-market B2B companies, Microsoft Defender for IoT (if you are a Microsoft shop) or Fortinet (if you use their network hardware) are the most successful starting points" (Gemini 3.5 Flash, direct prompt, first choice)
- "For a small company with one OT site and up to 100 devices, I'd start by evaluating Microsoft Defender for IoT's XS site license." (GPT-6 Luna, budget prompt, first choice)
- "I'd suggest starting with Microsoft Defender for IoT ($70-250/month) as the most cost-effective commercial solution" (Kimi K2, budget prompt, first choice)

## What the models said about Armis Centrix

- "Example Platforms to approach with caution: Armis Centrix (or similar integration-heavy IT/IoT platforms)" (Gemini 3.5 Flash, negative prompt, soft negative)
- "Strong on IoT/XIoT discovery but weaker on deep OT protocol knowledge vs. natives like Dragos/Nozomi." (Grok 4.1 Fast, negative prompt, soft negative)
- "not the same as deep OT-native detection; they may be better suited to IoT visibility" (Perplexity Sonar, negative prompt, soft negative)
- "I'd recommend Armis as the primary choice due to its balance of comprehensive device discovery, ease of implementation, and vendor compatibility" (Claude Haiku 4.5, paraphrase prompt, first choice)
- "You should only choose Agentless (passive monitoring) platforms like Claroty, Nozomi, or Armis for OT." (Qwen 3.7 Flash, negative prompt, first choice)
- "start with Claroty xDome or Armis" (Kimi K2, direct prompt, first choice)

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. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.