# Mozilla Firefox ESR: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 3 judge labels across 1 category by 2 of 14 models. Page: https://www.gane.ai/index/it/vendors/mozilla-firefox-esr

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Enterprise browsers](https://www.gane.ai/index/it/security/enterprise-browsers/index.md) | 0% | 19 | 0% | 3 |

## What the models said for it

- "Mozilla Firefox ESR (Extended Support Release) for environments needing stricter controls and open-source transparency." (Grok 4.20, Enterprise browsers)
- "Free and open-source with strong privacy ... but not the "best" for full enterprise security out-of-the-box." (Grok 4.20, Enterprise browsers)
- "Best For: Linux-heavy environments, open-source purists, and sectors prioritizing multi-vendor security." (Qwen 3.7 Flash, Enterprise browsers)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 0 | 0 | 0 | 0 | 0 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 0 | 0 |
| Perplexity Sonar | 0 | 0 | 0 | 0 | 0 |
| Grok 4.20 | 0 | 2 | 0 | 0 | 2 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 0 | 0 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 1 | 0 | 0 | 1 |
| Kimi K2 | 0 | 0 | 0 | 0 | 0 |
| GLM 4.7 FlashX | 0 | 0 | 0 | 0 | 0 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 0 | 0 | 0 | 0 |
| Muse Glimmer 30B | 0 | 0 | 0 | 0 | 0 |

## Sources returned with these answers

The sites and pages cited by the answers that named Mozilla Firefox ESR, from 3 of the 4 answers that named it (only the models that return a source list).

### Domains cited

- akamai.com: 2
- chromeenterprise.google: 2
- csoonline.com: 2
- startupstash.com: 2
- assets.mozilla.net: 1
- bip-arch.stare-miasto.pl: 1
- cert.europa.eu: 1
- cfotech.co.nz: 1
- cloud.google.com: 1
- connect.island.io: 1

### Pages cited

- https://akamai.com/blog/security/2024/sep/enterprise-browser: 2
- https://chromeenterprise.google/: 2
- https://csoonline.com/article/573875/secure-web-browsers-for-the-enterprise-compared-how-to-pick-the-right-one.html: 2
- https://startupstash.com/top-secure-enterprise-browsers: 2
- https://akamai.com/blog/security/2023/mar/the-dark-side-of-enterprise-browsers: 1
- https://akamai.com/blog/security/enterprise-browser: 1
- https://assets.mozilla.net/pdf/Firefox_Professional_Support_Plans.pdf: 1
- https://bip-arch.stare-miasto.pl/www.mozilla.org/en-US/firefox/enterprise/index.html: 1

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/it.