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OT and IoT security · October 2026 Edition
Fortinet OT Security Platform vs Tenable OT Security
Two of fourteen models named Fortinet OT Security Platform first on the direct prompt; zero named Tenable OT Security. Fortinet OT Security Platform was named by eleven of the fourteen models and Tenable OT Security by eleven and Fortinet OT Security Platform carries 23 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 share8%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate4%15%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#4#6A position in a field of 9; printed, not drawn.
Labels2327A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Fortinet OT Security Platform 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 Fortinet OT Security Platform · Microsoft Defender for IoT vs Tenable OT Security · Claroty xDome vs Fortinet OT Security Platform
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.
Fortinet OT Security PlatformFirst choices, of fourteen modelsTenable OT Security
Direct20
Paraphrase00
Comparative00
Budget-constrained221 against Tenable OT Security
Scale-constrained00
Negative001 against Fortinet OT Security Platform · 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, Fortinet OT Security Platform and Tenable OT Security were named in the same answer twenty-two times, of the 67 answers naming Fortinet OT Security Platform and the 72 naming Tenable OT Security. In those answers Tenable OT Security took the first choice zero times and Fortinet OT Security Platform one.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Fortinet OT Security Platform 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 | |
Fortinet OT Security Platform Tenable OT Security first choice named as an alternative argued againstblank: not namedEach cell is one answer, Fortinet OT Security Platform on the left and Tenable OT Security on the right.The direct prompt
The plain question, one answer per model, grouped by where Fortinet OT Security Platform and Tenable OT Security stood in it.
Fortinet OT Security Platform first, Tenable OT Security not the choice
2 of 14 modelsTenable OT Security was named in the answer but not as the choice, or not at all.Gemini 3.5 FlashFortinet OT Security Platform, Microsoft Defender for IoT alternatives: Claroty xDome, Nozomi Networks Guardian
GLM 4.7 FlashXFortinet OT Security Platform alternatives: Dragos Platform, Nozomi Networks Guardian
Neither was the first choice, one was named
5 of 14 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5Claroty xDome, Nozomi Networks Guardian alternatives: Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks, Tenable OT Security
Perplexity SonarRadiflow360 alternatives: Claroty xDome, Dragos Platform, Fortinet OT Security Platform, Palo Alto Networks
Grok 4.1 FastClaroty xDome alternatives: Dragos Platform, Fortinet OT Security Platform, Nozomi Networks Guardian, Palo Alto Networks
Kimi K2Armis Centrix, Claroty xDome alternatives: Fortinet OT Security Platform, Microsoft Defender for IoT, Nozomi Networks Guardian
MiniMax M2.5Radiflow360 alternatives: Armis Centrix, Claroty xDome, Nozomi Networks Guardian, Tenable OT Security
Neither was named
7 of 14 modelsThe answer made no first choice from these two in this category.GPT-5.4 miniClaroty xDome alternatives: Armis Centrix, Dragos Platform
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
Llama 4 MaverickPalo Alto Networks alternatives: Claroty xDome, Forcepoint
Qwen 3.7 FlashIndustrial AI alternatives: Claroty xDome, Nozomi Networks Guardian, Tenable.io OT
GPT-6 LunaNozomi Networks Vantage alternatives: Claroty xDome, Dragos Platform
Muse Glimmer 30BRadiflow360 alternatives: Claroty xDome, Nozomi Networks Guardian
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
Fortinet OT Security Platform leads by two points.
Fortinet OT Security Platform7%#2 of 9Tenable OT Security4%#3 of 9Mid-marketThe figures above
Fortinet OT Security Platform leads by four points.
Fortinet OT Security Platform8%#4 of 9Tenable OT Security4%#6 of 9Enterprise
Fortinet OT Security Platform leads by four points.
Fortinet OT Security Platform4%#6 of 9Tenable OT Security0%#8 of 9What the models said about Fortinet OT Security Platform
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“may be better evaluated as infrastructure/security-control platforms than as best-in-class OT-native monitors” Perplexity Sonar · negative prompt · soft negative
“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
“Fortinet offers a cost-effective entry point with OT appliances starting at $2,200-$4,000” Claude Haiku 4.5 · budget prompt · first choice
“Start with Fortinet for network-based protection and segmentation” GLM 4.7 FlashX · direct 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 Fortinet OT Security PlatformMicrosoft Defender for IoT vs Tenable OT SecurityClaroty xDome vs Fortinet OT Security PlatformClaroty xDome vs Tenable OT SecurityNozomi Networks Guardian vs Fortinet OT Security PlatformNozomi Networks Guardian vs Tenable OT SecurityFortinet OT Security Platform vs Armis CentrixFortinet OT Security Platform vs Dragos PlatformFortinet OT Security Platform vs Palo Alto NetworksArmis 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.