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

IT AI Recommendation Index, October 2026 Edition. Named in 7 judge labels across 1 categories by 6 of 14 models. Page: https://it-ai-index.com/vendors/let-s-encrypt/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Certificate lifecycle management | 6% | 7 | 43% | 7 |

## What the models said for it

- "Start with Let's Encrypt for basic public SSL needs, or AWS Certificate Manager if you're AWS-native." (Kimi K2, Certificate management)
- "Kubernetes workloads or public-facing TLS: Start with cert-manager + Let's Encrypt. Both are free" (GPT-6 Luna, Certificate management)
- "Spend zero dollars on Certbot/Let's Encrypt first." (DeepSeek V4 Flash, Certificate management)

## And against it

- "Self-managed solutions - Let's Encrypt + scripts - becomes unmanageable at scale" (GLM 4.7 FlashX, Certificate management)
- "Free certificates, but requires a dedicated DevOps engineer to write and maintain the automation scripts. High operational risk." (Qwen 3.7 Flash, Certificate management)
- "Not necessarily "avoid," but be aware of significant limitations: No technical support" (Kimi K2, Certificate management)

## In its own words

What Let's Encrypt's own pages state, read 2026-10-05. Stated by the vendor, not checked by the index.

- Positioning: a free, automated, and open Certificate Authority (https://letsencrypt.org/)
- For: websites (https://letsencrypt.org/)
- Price stated: free (https://letsencrypt.org/)
- Free plan or trial: free TLS certificates (https://letsencrypt.org/)

## What it publishes

Every page letsencrypt.org exposes, read 2026-10-05: 11143 addresses. By kind, pages and the last 90 days:

- webinar or virtual event: 2 pages, 0 in the last 90 days, latest 2026-07-02
- conference or event: 3 pages, 0 in the last 90 days, latest 2018-08-29
- report or ebook: 13 pages, 0 in the last 90 days, latest 2019-03-07
- comparison: 36 pages, 0 in the last 90 days, latest 2026-04-15
- template or tool: 1 pages, 0 in the last 90 days, latest 2018-03-25
- glossary or explainer: 209 pages, 0 in the last 90 days, latest 2019-08-31
- Recent: 2026-07-02 webinar or virtual event: 248603 https://community.letsencrypt.org/t/false-positive-test-api-app-uca-edu-ar-blocked-as-recursive-on-demand-issuance/248603
- Recent: 2026-04-15 comparison: 246630 https://community.letsencrypt.org/t/does-certbot-support-cname-challenge-how-does-cname-validation-work-vs-dns-01/246630
- Recent: 2026-03-26 webinar or virtual event: 246162 https://community.letsencrypt.org/t/certificates-denied-for-subdomain-with-error-domain-name-contains-too-many-subdomain-labels-indicative-of-recursive-on-demand-issuance/246162
- Recent: 2019-08-31 glossary or explainer: 101013 https://community.letsencrypt.org/t/wordpress-multisite-add-on-sites-not-showing-wp/101013
- Recent: 2019-08-31 glossary or explainer: 101015 https://community.letsencrypt.org/t/vesta-subdomain-ssl-not-accept-error-429/101015
- Recent: 2019-08-30 glossary or explainer: 101003 https://community.letsencrypt.org/t/net-err-cert-common-name-invalid/101003

## 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.