Auth
An honest comparison to help you pick the right auth tool in 2026.
| Feature | Clerk | NextAuth (Auth.js) |
|---|---|---|
| Category | Auth | Auth |
| Free Tier | Yes | Yes |
| Paid Plan | $25/mo | $0 |
| Enterprise | Custom | N/A |
| Best For | Developers who want beautiful, production-ready auth UI without building login flows from scratch | Next.js developers who want free, open-source auth with full control over their setup |
| Feature 1 | Pre-built UI components | Open source |
| Feature 2 | Social logins | 50+ providers |
| Feature 3 | MFA | Database adapters |
| Feature 4 | Organization management | JWT/session support |
| Feature 5 | Webhooks | Framework agnostic |
| Website | Clerk | NextAuth (Auth.js) |
Clerk and NextAuth (Auth.js) are both popular choices in the auth category, but they serve different types of developers. Clerk is drop-in authentication with beautiful pre-built UI components, social logins, MFA, and organization management for modern apps. Meanwhile, NextAuth (Auth.js) is open-source authentication library for Next.js and other frameworks with provider-based architecture and database adapters.
Both tools offer free tiers, which means you can try each one before committing. Clerk's paid plan starts at $25/mo, while NextAuth (Auth.js)'s starts at $0.
Clerk stands out with Pre-built UI components and Social logins, while NextAuth (Auth.js) differentiates itself through Open source and 50+ providers. The right choice depends on which capabilities matter most for your workflow. Ultimately, developers who want beautiful, production-ready auth UI without building login flows from scratch, while NextAuth (Auth.js) is best for next.js developers who want free, open-source auth with full control over their setup.
Clerk: Free tier available. Paid plans start at $25/mo. Enterprise pricing: Custom.
NextAuth (Auth.js): Free tier available. Paid plans start at $0.
Choose Clerk if you value pre-built ui components and social logins. Go with NextAuth (Auth.js) if next.js developers who want free, open-source auth with full control over their setup. Both are solid auth options in 2026 — the best pick depends on your team size, budget, and technical requirements. We recommend trying both (especially if they have free tiers) before committing to one.
Not sold on either Clerk or NextAuth (Auth.js)? Check out these other auth tools:
See all Clerk alternatives or NextAuth (Auth.js) alternatives.
Read more about auth on our Vibe Coding page.
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