Does AI recommend Auth.js (NextAuth)?

Across 6 AI models, Auth.js (NextAuth) is the first authentication pick in 6% of answers (#4 of 6) and is mentioned in 44%. It is installed in 35% of the apps the models build. Leader: Clerk 62%.

Recommended as the top pick

#4 of 6 · Leader: Clerk 62%

44%

Mentioned at all

Named anywhere in the recommendation

35%

Adopted in generated code

#2 of 6 · Leader: Custom (DIY) 37%

Gap. Models mention Auth.js (NextAuth) in 44% of answers, but pick it first in only 6%.

What AI recommends first for authentication

Share of 180 answers across 6 models

Clerk

62%

Auth0

18%

Supabase Auth

11%

Auth.js (NextAuth)

Better Auth

Keycloak

Used in AI-built apps

Share of 179 answers across 6 models

Custom (DIY)

37%

Auth.js (NextAuth)

35%

Supabase Auth

Firebase Auth

Clerk

Passport.js

Compare Auth.js (NextAuth)

Get the full breakdown for Auth.js (NextAuth)

Results for each of the 6 models and each developer context, who gets picked instead, and real excerpts of AI answers. Free, by email.

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Measured 2026-10-01 with claude-sonnet-5.5, gpt-6.1-sol, gemini-3.8-flash, grok-4.7, deepseek-v4.1-flash, qwen3.8-max-prime, 5 runs per recommendation prompt and 5 per build prompt, via public APIs with no system prompt. Methodology. DefaultRank is independent and not affiliated with any tool vendor or model provider.