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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 | Jul 23, 2026 |
|---|---|---|
| Claude Fable 5 | ||
| Claude Opus 4.8 | ||
| Claude Sonnet 4.6 | ||
| Claude Haiku 4.5 | ||
| GPT-5.5 | ||
| GPT-5.6 Sol | — |
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 23, 2026- 1ClerkDrop-in prebuilt UI components, session management, and SDKs for popular frameworks make it the fastest way to ship full auth (sign-up, login, sessions) with minimal code.
- 2Auth0Mature, battle-tested platform with extensive protocol support (OAuth, SAML, MFA) that scales well if you later need enterprise SSO or complex identity flows.
- 3Supabase AuthGenerous free tier and tight integration with a Postgres backend make it a great choice if you want auth plus database and row-level security in one service.