Vulnerability management platforms · October 2026 Edition
Vicarius vRx vs Tenable Nessus
Two of fourteen models named Vicarius vRx first on the direct prompt; zero named Tenable Nessus. Vicarius vRx was named by eight of the fourteen models and Tenable Nessus by eleven and Vicarius vRx carries 11 labels and Tenable Nessus 23, so the shares are not directly comparable.
Named in one category this edition.
Named in four categories this edition.
First-choice share4%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate0%30%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#7#8A position in a field of 10; printed, not drawn.
Labels1123A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Vicarius vRx reading right to left. Rank and label count are printed, not drawn.Rapid7 InsightVM was named alongside these two in twelve of the fourteen direct answers. Rapid7 InsightVM vs Vicarius vRx · Rapid7 InsightVM vs Tenable Nessus · Tenable Vulnerability Management vs Vicarius vRx
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 vulnerability management platforms page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
Vicarius vRxFirst choices, of fourteen modelsTenable Nessus
Direct20
Paraphrase011 against Tenable Nessus
Comparative001 against Tenable Nessus
Budget-constrained013 against Tenable Nessus
Scale-constrained00
Negative002 against Tenable Nessus
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.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Vicarius vRx and Tenable Nessus 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 | | |
Vicarius vRx Tenable Nessus first choice named as an alternative argued againstblank: not namedEach cell is one answer, Vicarius vRx on the left and Tenable Nessus on the right.The direct prompt
The plain question, one answer per model, grouped by where Vicarius vRx and Tenable Nessus stood in it.
Vicarius vRx first, Tenable Nessus not the choice
2 of 14 modelsTenable Nessus was named in the answer but not as the choice, or not at all.Gemini 3.5 FlashSecPod SanerNow, Vicarius vRx alternatives: CrowdStrike Falcon Spotlight, Microsoft Defender Vulnerability Management, Nucleus Security, Rapid7 InsightVM
DeepSeek V4 FlashRapid7 InsightVM, Vicarius vRx alternatives: Intruder, Tenable Vulnerability Management
Neither was the first choice, one was named
2 of 14 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5Rapid7 InsightVM alternatives: ManageEngine Vulnerability Manager Plus, Microsoft Defender for Cloud, Tenable Vulnerability Management, Vicarius vRx
Perplexity SonarRapid7 InsightVM alternatives: ManageEngine Vulnerability Manager Plus, Microsoft Defender Vulnerability Management, Microsoft Defender for Cloud, Qualys VMDR, Vicarius vRx
Neither was named
10 of 14 modelsThe answer made no first choice from these two in this category.GPT-5.4 miniRapid7 InsightVM alternatives: Qualys VMDR, Tenable Vulnerability Management
Grok 4.1 FastRapid7 InsightVM alternatives: Intruder, ManageEngine Vulnerability Manager Plus, Qualys VMDR, Tenable Vulnerability Management
Mistral SmallRapid7 InsightVM alternatives: Intruder, ManageEngine Vulnerability Manager Plus, SureCloud
Llama 4 MaverickIntruder alternatives: ManageEngine Vulnerability Manager Plus, Rapid7's Insight platform
Qwen 3.7 FlashRapid7 InsightVM alternatives: Qualys VMDR, Tenable Vulnerability Management
Kimi K2Intruder, Rapid7 InsightVM alternatives: Qualys VMDR
GLM 4.7 FlashXQualys VMDR alternatives: ManageEngine Vulnerability Manager Plus, Microsoft Defender Vulnerability Management, Tenable Vulnerability Management
MiniMax M2.5Rapid7 InsightVM alternatives: Intruder, Tenable One
GPT-6 LunaTenable Vulnerability Management alternatives: Qualys VMDR, Rapid7 InsightVM
Muse Glimmer 30BRapid7 InsightVM alternatives: Intruder, ManageEngine Vulnerability Manager Plus
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 Nessus leads by four points.
Tenable Nessus5%#3 of 11Vicarius vRx2%#10 of 11Mid-marketThe figures above
Level: the same share of first choices.
Vicarius vRx4%#7 of 10Tenable Nessus4%#8 of 10Enterprise
Level: the same share of first choices.
Vicarius vRx0%#– of 9Tenable Nessus0%#– of 9What the models said about Vicarius vRx
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of four in this category shown.
“vRx is highly regarded in the mid-market space. It uses a single agent to perform vulnerability scanning, risk prioritization, and automated patching” Gemini 3.5 Flash · direct prompt · first choice
“For most mid-market B2B companies, Rapid7 InsightVM or Vicarius vRx are the strongest overall picks.” DeepSeek V4 Flash · direct prompt · first choice
“described as the strongest fit because of its patchless protection and lower operational overhead” Perplexity Sonar · direct prompt · alternative
What the models said about Tenable Nessus
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of six in this category shown.
“Avoid trying to scrape out a "Free" version of Nessus; Tenable discontinued its unlimited community scanner” Qwen 3.7 Flash · budget prompt · hard negative
“Avoid Standalone "Point-in-Time" Scanners for Enterprise VM ... Why to avoid them for enterprise VM” Gemini 3.5 Flash · negative prompt · hard negative
“scanners like older Nessus/OpenVAS versions criticized for inaccurate Windows scans or signature mismatches” Grok 4.1 Fast · negative prompt · soft negative
“the best starting point is Nessus Essentials (free) + a free vulnerability feed for on‑prem scanning” GLM 4.7 FlashX · budget prompt · first choice
“I'd recommend Tenable Nessus Professional as the starting point” Grok 4.1 Fast · paraphrase prompt · first choice
“useful for getting started with proven scanning technology, with the limitation of scan limits and lack of centralized reporting” Muse Glimmer 30B · budget prompt · alternative
Also compared
Rapid7 InsightVM vs Vicarius vRxRapid7 InsightVM vs Tenable NessusTenable Vulnerability Management vs Vicarius vRxTenable Vulnerability Management vs Tenable NessusIntruder vs Vicarius vRxIntruder vs Tenable NessusQualys VMDR vs Vicarius vRxQualys VMDR vs Tenable NessusManageEngine Vulnerability Manager Plus vs Vicarius vRxManageEngine Vulnerability Manager Plus vs Tenable NessusMicrosoft Defender Vulnerability Management vs Vicarius vRxMicrosoft Defender Vulnerability Management vs Tenable NessusAll twenty-eight head-to-head pages and the full vuln management 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.