# Firebase Authentication: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 12 judge labels across 1 category by 9 of 14 models. Page: https://www.gane.ai/index/it/vendors/firebase-authentication

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Customer identity and access management](https://www.gane.ai/index/it/identity/customer-identity-and-access-management/index.md) | 4% | 9 | 25% | 12 |

## What the models said for it

- "Supabase Auth or Firebase | Up to 50k free MAUs and pennies per thousand users afterward." (Gemini 3.5 Flash, CIAM)
- "Need maximum free MAUs for a hosted SaaS: WorkOS User Management or Firebase Authentication." (Muse Glimmer 30B, CIAM)
- "Choose Firebase Auth if you are building a mobile app or MVP on Google Cloud" (Gemini 3.5 Flash, CIAM)
- "Firebase Authentication (Best for Mobile-First or Google Ecosystem)" (Grok 4.20, CIAM)

## And against it

- "you are likely beyond basic "build-it-yourself" or lightweight authentication (like basic Firebase/Cognito setups)" (Gemini 3.5 Flash, CIAM)
- "Firebase lacks native support for multi-tenancy, tenant-level branding, enterprise SAML/OIDC" (Gemini 3.5 Flash, CIAM)
- "Firebase Authentication for governance-heavy environments. Treat it cautiously" (Perplexity Sonar, CIAM)

## 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 | 1 | 1 | 0 | 2 | 4 |
| Perplexity Sonar | 0 | 0 | 0 | 1 | 1 |
| Grok 4.20 | 0 | 1 | 0 | 0 | 1 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 0 | 0 |
| Llama 4 Maverick | 0 | 1 | 0 | 0 | 1 |
| Qwen 3.7 Flash | 0 | 1 | 0 | 0 | 1 |
| Kimi K2 | 0 | 0 | 1 | 0 | 1 |
| GLM 4.7 FlashX | 0 | 1 | 0 | 0 | 1 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 0 | 1 | 0 | 1 |
| Muse Glimmer 30B | 1 | 0 | 0 | 0 | 1 |

## Sources returned with these answers

The sites and pages cited by the answers that named Firebase Authentication, from 35 of the 48 answers that named it (only the models that return a source list).

### Domains cited

- g2.com: 13
- securityboulevard.com: 13
- spotsaas.com: 12
- startupstash.com: 11
- descope.com: 9
- kinde.com: 9
- clerk.com: 8
- mojoauth.com: 8
- okta.com: 8
- capterra.com: 7

### Pages cited

- https://g2.com/categories/customer-identity-and-access-management-ciam/small-business: 10
- https://descope.com/blog/post/ciam-solutions: 8
- https://spotsaas.com/blog/customer-identity-and-access-management-software: 8
- https://spotsaas.com/list/customer-identity-and-access-management--ciam--software/for-small-business: 8
- https://startupstash.com/customer-identity-and-access-management-ciam-tools: 8
- https://expertinsights.com/identity-and-access-management/top-customer-identity-and-access-management-ciam-solutions: 7
- https://securityboulevard.com/2025/12/top-ciam-for-smbs-secure-affordable-options: 7
- https://freetier.co/directory/categories/customer-identity-platforms: 6

## In its own words

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

- Positioning: Simple, multi-platform sign-in (https://firebase.google.com/products/auth)
- For: developers (https://firebase.google.com/products/auth)
- Price stated: Understand your charges and estimate your invoice on the pricing page. (https://firebase.google.com/products/auth)
- Customers named: STAGE, Acintyo

## 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.