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Authentication
I need to add user authentication (sign-up, login, sessions) to my app and want to use a service rather than build it myself. Which do you recommend? Give your ranked top 3.
Top pick by run
| Model | Jul 3, 2026 |
|---|---|
| Claude Fable 5 | |
| Claude Opus 4.8 | |
| Claude Sonnet 4.6 | |
| Claude Haiku 4.5 | |
| GPT-5.5 |
Each column is one run. Click a pick to see that model's full ranking and reasoning. Green marks a change from the previous run.
Claude Fable 5
Jul 3, 2026- 1ClerkClerk offers drop-in prebuilt UI components for sign-up, login, and session management with excellent developer experience, making it the fastest way to ship polished auth.
- 2Auth0Auth0 is a mature, battle-tested identity platform with extensive SDKs, enterprise features (SSO, MFA), and broad framework support if you anticipate scaling or complex requirements.
- 3Supabase AuthSupabase Auth provides generous free-tier authentication with social logins and magic links, and is especially convenient if you also want a Postgres database bundled in.