# OT and IoT security for small business buyers: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "OT security platform" and as "industrial and IoT device security tool", six framings each, to fourteen models with search on, on behalf of a small B2B company. Added to the November 2026 Edition. Page: https://www.gane.ai/index/it/security/ot-and-iot-security/2026-11/smb

**Standing:** Microsoft Defender for IoT leads with 49% of first choices; verdict clear leader. 45 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Microsoft Defender for IoT](https://www.gane.ai/index/it/vendors/microsoft-defender-for-iot/index.md) | 49% | 9% | 54 |
| 2 | [Fortinet OT Security Platform](https://www.gane.ai/index/it/vendors/fortinet-ot-security-platform/index.md) | 9% | 3% | 34 |
| 3 | [Cisco Cyber Vision](https://www.gane.ai/index/it/vendors/cisco-cyber-vision/index.md) | 7% | 8% | 12 |
| 4 | [Nozomi Networks Guardian](https://www.gane.ai/index/it/vendors/nozomi-networks-guardian/index.md) | 7% | 38% | 39 |
| 5 | [Armis Centrix](https://www.gane.ai/index/it/vendors/armis-centrix/index.md) | 4% | 41% | 34 |
| 6 | [Claroty xDome](https://www.gane.ai/index/it/vendors/claroty-xdome/index.md) | 4% | 52% | 48 |
| 15 | [Palo Alto Networks OT Security](https://www.gane.ai/index/it/vendors/palo-alto-networks-ot-security/index.md) | 2% | 42% | 19 |
| 16 | [Tenable OT Security](https://www.gane.ai/index/it/vendors/tenable-ot-security/index.md) | 0% | 14% | 29 |
| 17 | [AWS IoT Device Defender](https://www.gane.ai/index/it/vendors/aws-iot-device-defender/index.md) | 0% | 10% | 10 |
| 80 | [Forescout Vistaro Platform](https://www.gane.ai/index/it/vendors/forescout-vistaro-platform/index.md) | 0% | 41% | 17 |
| 105 | [Dragos Platform](https://www.gane.ai/index/it/vendors/dragos-platform/index.md) | 0% | 64% | 33 |

Rank is by share of first choices among all 105 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

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

- Claude Haiku 4.5: Asimily; alternatives Acreto, Forescout Vistaro Platform, Ordr
- GPT-5.4 mini: Fortinet OT Security Platform; alternatives Claroty xDome, Nozomi Networks Guardian
- Gemini 3.5 Flash: Microsoft Defender for IoT; alternatives Armis Centrix, Fortinet OT Security Architecture, Nozomi Networks Guardian
- Perplexity Sonar: Microsoft Defender for IoT; alternatives Fortinet OT Security Platform, Tenable One OT Security
- Grok 4.20: Nozomi Networks Guardian; alternatives Cisco Cyber Vision, Claroty xDome, Fortinet OT Security Platform
- Mistral Small: Microsoft Defender for IoT; alternatives Fortinet OT Security Platform, Tenable OT Security
- DeepSeek V4 Flash: Microsoft Defender for IoT; alternatives Asimily, Awen Collective, Fortinet OT Security Platform
- Llama 4 Maverick: Microsoft Defender for IoT; alternatives Cisco Cyber Vision
- Qwen 3.7 Flash: Fortinet OT Security Platform; alternatives Claroty xDome, SecureNet, Tenable Vulnerability Management
- Kimi K2: Industrial Defender Phoenix; alternatives Cisco Cyber Vision, Forcepoint, Nozomi Networks Guardian
- GLM 4.7 FlashX: Fortinet OT Security Platform; alternatives SCADAfence
- MiniMax M2.5: Cisco Cyber Vision, Microsoft Defender for IoT; alternatives Fortinet OT Security Platform, OPSWAT MetaDefender for OT & CPS, OT Cyber Direct
- GPT-6 Luna: Claroty xDome; alternatives Microsoft Defender for IoT
- Muse Glimmer 30B: Microsoft Defender for IoT; alternatives Cisco Cyber Vision, Fortinet OT Security Platform

## Sources the answers cite

73 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- guideflow.com: 33 answers, 43 citations
- gane.ai/index: 29 answers, 29 citations
- g2.com: 24 answers, 49 citations
- sourceforge.net: 24 answers, 33 citations
- startupstash.com: 22 answers, 22 citations
- microsoft.com: 21 answers, 43 citations
- fortinet.com: 19 answers, 35 citations
- security.toolsinfo.com: 18 answers, 21 citations

Pages named in the most answers:

- https://gane.ai/index/it/security/ot-and-iot-security/smb (29 answers)
- https://guideflow.com/blog/ot-security-tools (24 answers)
- https://startupstash.com/best-ot-ics-security-platforms (22 answers)
- https://reliamag.com/topics/guides/best-industrial-cybersecurity-platforms-ot-ics-security-2026 (18 answers)
- https://g2.com/categories/iot-security-solutions/small-business (16 answers)
- https://trustradius.com/categories/operational-technology-security?company-size=small-business (16 answers)
- https://guideflow.com/blog/iot-security-solutions (15 answers)
- https://intsignal.com/signal/low-cost-ot-iot-security-smb (15 answers)
- https://microsoft.com/en-us/security/business/endpoint-security/microsoft-defender-iot (14 answers)
- https://ciopages.com/buyer-guides/ot-ics-security (13 answers)

## Warned against

- Claroty xDome: 25 of 48 labels negative. "Platforms to Avoid for Small B2B (Unless Budget Allows) | Claroty | ~$150,000 | Enterprise-focused, expensive per-asset licensing" (Muse Glimmer 30B, negative prompt)
- Dragos Platform: 21 of 33 labels negative. "Quote-based pricing, often $10K+ starting, six figures for full deployment; heavy site-based licensing" (Kimi K2, negative prompt)
- Nozomi Networks Guardian: 15 of 39 labels negative. "it carries a high "negative feedback" rating among smaller buyers due to significant complexity and resource intensity" (Qwen 3.7 Flash, negative prompt)
- Armis Centrix: 14 of 34 labels negative. "Modular enterprise subscription pricing; setup and normalization take sustained effort; expensive module packaging and add-on costs" (Kimi K2, negative prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: Microsoft Defender for IoT at 49%.

- Microsoft Defender for IoT: 40% to 49%, +9. Inside the floor by 2 points · rank 1 of 105, unchanged.
- Cisco Cyber Vision: 0% to 7%, +7. Inside the floor by 4 points · rank 39 → 3 of 105.
- Nozomi Networks Guardian: 2% to 7%, +5. Inside the floor by 6 points · rank 8 → 4 of 105.
- Tenable OT Security: 4% to 0%, −4. Inside the floor by 7 points · rank 4 → 16 of 105.
- Fortinet OT Security Platform: 7% to 9%, +2. Inside the floor by 9 points · rank 3 → 2 of 105.
- Armis Centrix: 2% to 4%, +2. Inside the floor by 9 points · rank 7 → 5 of 105.
- Palo Alto Networks OT Security: 0% to 2%, +2. Inside the floor by 9 points · rank 94 → 15 of 105.
- Dragos Platform: 2% to 0%, −2. Inside the floor by 9 points · rank 20 → 105 of 105.
- Claroty xDome: 4% to 4%, ±0. Inside the floor by 11 points · rank 5 → 6 of 105.
- AWS IoT Device Defender: 0% to 0%, ±0. Inside the floor by 11 points · rank 21 → 17 of 105.
- Forescout Vistaro Platform: 0% to 0%, ±0. Inside the floor by 11 points · rank 22 → 80 of 105.

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/it.