# Microsoft Defender for IoT vs Nozomi Networks Guardian: 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 Nozomi Networks Guardian. Page: https://it-ai-index.com/security/ot-and-iot-security/microsoft-defender-for-iot-vs-nozomi-networks-guardian/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Microsoft Defender for IoT | 21% | #1 of 9 | 21% | 42 | 13 of 14 |
| Nozomi Networks Guardian | 10% | #3 of 9 | 13% | 46 | 13 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)
- Claude Haiku 4.5: nozomi networks guardian first (first choices: Claroty xDome, Nozomi Networks Guardian) (alternatives: Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks, Tenable OT Security)
- Grok 4.1 Fast: neither first, one named (first choices: Claroty xDome) (alternatives: Dragos Platform, Fortinet OT Security Platform, Nozomi Networks Guardian, Palo Alto Networks)
- Mistral Small: neither first, one named (first choices: Dragos Platform) (alternatives: Claroty xDome, Nozomi Networks Guardian)
- 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)
- Qwen 3.7 Flash: neither first, one named (first choices: Industrial AI) (alternatives: Claroty xDome, Nozomi Networks Guardian, Tenable.io OT)
- Kimi K2: neither first, one named (first choices: Armis Centrix, Claroty xDome) (alternatives: Fortinet OT Security Platform, Microsoft Defender for IoT, Nozomi Networks Guardian)
- GLM 4.7 FlashX: neither first, one named (first choices: Fortinet OT Security Platform) (alternatives: Dragos Platform, Nozomi Networks Guardian)
- MiniMax M2.5: neither first, one named (first choices: Radiflow360) (alternatives: Armis Centrix, Claroty xDome, Nozomi Networks Guardian, Tenable OT Security)
- Muse Glimmer 30B: neither first, one named (first choices: Radiflow360) (alternatives: Claroty xDome, Nozomi Networks Guardian)
- GPT-5.4 mini: neither named (first choices: Claroty xDome) (alternatives: Armis Centrix, Dragos Platform)
- Perplexity Sonar: neither named (first choices: Radiflow360) (alternatives: Claroty xDome, Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks)
- Llama 4 Maverick: neither named (first choices: Palo Alto Networks) (alternatives: Claroty xDome, Forcepoint)
- GPT-6 Luna: neither named (first choices: Nozomi Networks Vantage) (alternatives: Claroty xDome, Dragos Platform)

## 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 Nozomi Networks Guardian

- "Avoid if budget is tight: Nozomi Networks" (Perplexity Sonar, budget prompt, hard negative)
- "The presence of recent high-severity privilege and authentication issues does not mean the product should be avoided outright, it means deployments must be kept current" (Muse Glimmer 30B, negative prompt, soft negative)
- "frequently cost six figures and require dedicated Security Operations Center (SOC) teams—usually out of reach" (Gemini 3.5 Flash, budget prompt, soft negative)
- "Offers the broadest range of deployment form factors and has the most extensive OT and IoT device coverage by asset type count and the strongest scalability" (Claude Haiku 4.5, direct prompt, first choice)
- "Claroty and Nozomi are widely regarded as market leaders for broad asset visibility and risk posture." (Gemini 3.5 Flash, scale prompt, first choice)
- "I'd recommend Nozomi Networks (specifically their Guardian platform with Vantage SaaS management)" (Grok 4.1 Fast, paraphrase 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.