# Tenable Nessus: how AI models rank it, September 2026

IT AI Recommendation Index, September 2026 Edition. Named in 17 judge labels across 2 categories by 8 of 12 models. Page: https://it-ai-index.com/vendors/tenable-nessus/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Vulnerability management platforms | 2% | 9 | 33% | 12 |
| Penetration testing as a service | 0% | 69 | 20% | 5 |

## What the models said for it

- "Choose Nessus if you can afford a commercial tool. It usually gives the best balance of cost, ease of use, and scan quality" (GPT-5.4 mini, Vuln management)
- "If you only need a simple point-in-time scanner and have a small environment, Nessus Professional can be enough." (GPT-5.4 mini, Vuln management)
- "If <20 assets and no IT team, Nessus Essentials." (Grok 4.1 Fast, Vuln management)

## And against it

- "Many cheap providers simply run a tool like Nessus or OpenVAS and hand you a PDF report. This is called Vulnerability Scanning, not Penetration Testing." (Qwen 3.7 Flash, PTaaS)
- "Buying a standalone scanner (like *Tenable Nessus Professional* ...) and trying to run an enterprise program with it... Why to avoid" (Gemini 3.5 Flash, Vuln management)
- "This is explicitly a point-in-time scanner, not a vulnerability management program. It lacks remediation tracking" (Kimi K2, Vuln management)
- "Budget starter for basic scans (unlimited IPs). Not full management." (Grok 4.1 Fast, Vuln management)

## Record

- Method: https://it-ai-index.com/methodology/
- Raw judge labels and full responses: https://it-ai-index.com/data/
- License: CC BY 4.0. Cite as IT AI Recommendation Index, September 2026 Edition, it-ai-index.com.