Which authentication services do AI engines recommend?
We asked ChatGPT, Perplexity, Gemini, Claude, DeepSeek, and Mistral: "What's the best authentication service for web apps?" Here's the complete ranking.
The Full Ranking
- Auth0 — 5/6 (not mentioned by Mistral)
- Firebase Auth — 5/6 (not mentioned by Mistral)
- Clerk — 4/6 (not mentioned by ChatGPT, Mistral)
- Supabase Auth — 4/6 (not mentioned by ChatGPT, Mistral)
- Stytch — 1/6 (not mentioned by ChatGPT, Gemini, DeepSeek, Claude, Mistral)
- WorkOS — 1/6 (not mentioned by ChatGPT, Perplexity, Gemini, Claude, Mistral)
- Descope — 1/6 (not mentioned by ChatGPT, Gemini, DeepSeek, Claude, Mistral)
- Kinde — 0/6 (invisible to all engines)
Auth0 and Firebase Lead, Clerk Is Close Behind
Auth0 and Firebase Auth both score 5/6 — nearly universal recommendation. Clerk and Supabase Auth follow at 4/6, showing that newer auth solutions CAN break through if they build enough web presence.
The Invisible Auth Providers
Kinde scores 0/6 despite being a well-funded, growing auth platform. Stytch, WorkOS, and Descope each manage just 1/6.
For authentication — a critical infrastructure choice — being invisible to AI recommendations means developers may never consider these platforms when building their auth stack.
Auth0 has years of documentation, tutorials, and community content. Firebase benefits from Google's massive content ecosystem. The platforms scoring well have deep, structured web presences that AI engines can easily surface.
Newer platforms need to build this content layer — comparison pages, migration guides, integration tutorials — to become visible to AI-powered discovery.
See All Rankings
Full leaderboard with 204 SaaS tools at eurekanav.com/leaderboard. Free AI visibility audit at eurekanav.com.
Methodology
Same query to all 6 engines. Score = mention count (0-6). Temperature 0.3, max 1200 tokens. April 2026.
