# ACME Protocol + Let's Encrypt: how AI models rank it, October 2026

IT AI Recommendation Index, October 2026 Edition. Named in 1 judge labels across 1 categories by 1 of 14 models. Page: https://it-ai-index.com/vendors/acme-protocol-let-s-encrypt/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Certificate lifecycle management | 0% | 41 | 0% | 1 |

## What the models said for it

- "Industry standard, completely free. Cons: 90-day certificate lifespan requires robust automation." (Qwen 3.7 Flash, Certificate 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, October 2026 Edition, it-ai-index.com.