# OpenCTI: how AI models rank it, September 2026

IT AI Recommendation Index, September 2026 Edition. Named in 23 judge labels across 1 categories by 10 of 12 models. Page: https://it-ai-index.com/vendors/opencti/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Threat intelligence platforms | 6% | 5 | 9% | 23 |

## What the models said for it

- "If you have an absolute $0 software budget but have some engineering time: Spin up a virtual machine and install OpenCTI." (Gemini 3.5 Flash, Threat intel)
- "OpenCTI (Community Edition) is widely regarded as the best free TIP in 2026 for a budget-constrained company" (DeepSeek V4 Flash, Threat intel)
- "Bottom line: If you have technical staff available, start with OpenCTI Community Edition" (Kimi K2, Threat intel)
- "open source platform allowing organizations to manage their cyber threat intelligence knowledge and observables" (Claude Haiku 4.5, Threat intel)

## And against it

- "Platforms built on open-source frameworks (e.g., MISP, OpenCTI) are free, but they are not turnkey solutions" (DeepSeek V4 Flash, Threat intel)
- "These platforms require significant engineering resources to maintain." (Gemini 3.5 Flash, Threat intel)

## 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.