OT and IoT security · October 2026 Edition
Nozomi Networks Guardian vs Tenable OT Security
One of fourteen models named Nozomi Networks Guardian first on the direct prompt; zero named Tenable OT Security. Nozomi Networks Guardian was named by thirteen of the fourteen models and Tenable OT Security by eleven and Nozomi Networks Guardian carries 46 labels and Tenable OT Security 27, so the shares are not directly comparable.
Named in one category this edition.
Named in one category this edition.
First-choice share10%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate13%15%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#3#6A position in a field of 9; printed, not drawn.
Labels4627A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Nozomi Networks Guardian reading right to left. Rank and label count are printed, not drawn.Claroty xDome was named alongside these two in thirteen of the fourteen direct answers. Microsoft Defender for IoT vs Nozomi Networks Guardian · Microsoft Defender for IoT vs Tenable OT Security · Claroty xDome vs Nozomi Networks Guardian
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 OT and IoT security page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
Nozomi Networks GuardianFirst choices, of fourteen modelsTenable OT Security
Direct10
Paraphrase30
Comparative10
Budget-constrained023 against Nozomi Networks Guardian · 1 against Tenable OT Security
Scale-constrained10
Negative203 against Nozomi Networks Guardian · 3 against Tenable OT Security
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, Nozomi Networks Guardian and Tenable OT Security were named in the same answer fifty-five times, of the 142 answers naming Nozomi Networks Guardian and the 72 naming Tenable OT Security. In those answers Tenable OT Security took the first choice zero times and Nozomi Networks Guardian eleven.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Nozomi Networks Guardian and Tenable OT Security 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 | | | |
Nozomi Networks Guardian Tenable OT Security first choice named as an alternative argued againstblank: not namedEach cell is one answer, Nozomi Networks Guardian on the left and Tenable OT Security on the right.The direct prompt
The plain question, one answer per model, grouped by where Nozomi Networks Guardian and Tenable OT Security stood in it.
Nozomi Networks Guardian first, Tenable OT Security an alternative
1 of 14 modelsTenable OT Security was named in the answer but not as the choice, or not at all.Claude Haiku 4.5Claroty xDome, Nozomi Networks Guardian alternatives: Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks, Tenable OT Security
Neither was the first choice, one was named
9 of 14 modelsThe answer put something else first and named one of the two as an alternative.Gemini 3.5 FlashFortinet OT Security Platform, Microsoft Defender for IoT alternatives: Claroty xDome, Nozomi Networks Guardian
Grok 4.1 FastClaroty xDome alternatives: Dragos Platform, Fortinet OT Security Platform, Nozomi Networks Guardian, Palo Alto Networks
Mistral SmallDragos Platform alternatives: Claroty xDome, Nozomi Networks Guardian
DeepSeek V4 FlashClaroty xDome alternatives: Microsoft Defender for IoT, Nozomi Networks Guardian, Palo Alto Networks Industrial OT Security
Qwen 3.7 FlashIndustrial AI alternatives: Claroty xDome, Nozomi Networks Guardian, Tenable.io OT
Kimi K2Armis Centrix, Claroty xDome alternatives: Fortinet OT Security Platform, Microsoft Defender for IoT, Nozomi Networks Guardian
GLM 4.7 FlashXFortinet OT Security Platform alternatives: Dragos Platform, Nozomi Networks Guardian
MiniMax M2.5Radiflow360 alternatives: Armis Centrix, Claroty xDome, Nozomi Networks Guardian, Tenable OT Security
Muse Glimmer 30BRadiflow360 alternatives: Claroty xDome, Nozomi Networks Guardian
Neither was named
4 of 14 modelsThe answer made no first choice from these two in this category.GPT-5.4 miniClaroty xDome alternatives: Armis Centrix, Dragos Platform
Perplexity SonarRadiflow360 alternatives: Claroty xDome, Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks
Llama 4 MaverickPalo Alto Networks alternatives: Claroty xDome, Forcepoint
GPT-6 LunaNozomi Networks Vantage alternatives: Claroty xDome, Dragos Platform
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
Tenable OT Security leads by two points.
Tenable OT Security4%#3 of 9Nozomi Networks Guardian2%#6 of 9Mid-marketThe figures above
The order flips: Nozomi Networks Guardian leads at mid-market.
Nozomi Networks Guardian10%#3 of 9Tenable OT Security4%#6 of 9Enterprise
Nozomi Networks Guardian leads by twenty-two points.
Nozomi Networks Guardian22%#2 of 9Tenable OT Security0%#8 of 9What the models said about Nozomi Networks Guardian
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“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
What the models said about Tenable OT Security
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“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
“these vendors risk falling behind peers regarding advanced AI-driven detection capabilities” Qwen 3.7 Flash · negative prompt · soft negative
“Tenable.ot has user complaints on asset classification accuracy and sensor bugs” Grok 4.1 Fast · negative prompt · soft negative
“frequently cited as a more budget-friendly option compared to some competitors... Start with a free trial or the most affordable commercial platform (like Tenable OT Security or Acreto)” Mistral Small · budget prompt · first choice
“Best Overall Value: Tenable OT Security (formerly Tenable.ot)” DeepSeek V4 Flash · budget prompt · first choice
“Tenable's Tenable One exposure management platform is a comprehensive attack surface management system covering endpoints, cloud environments, OT systems” Claude Haiku 4.5 · direct prompt · alternative
Also compared
Microsoft Defender for IoT vs Nozomi Networks GuardianMicrosoft Defender for IoT vs Tenable OT SecurityClaroty xDome vs Nozomi Networks GuardianClaroty xDome vs Tenable OT SecurityNozomi Networks Guardian vs Fortinet OT Security PlatformNozomi Networks Guardian vs Armis CentrixNozomi Networks Guardian vs Dragos PlatformNozomi Networks Guardian vs Palo Alto NetworksFortinet OT Security Platform vs Tenable OT SecurityArmis Centrix vs Tenable OT SecurityTenable OT Security vs Dragos PlatformTenable OT Security vs Palo Alto NetworksAll twenty-eight head-to-head pages and the full ot/iot security 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.