SuperTokens vs Auth.js

Side-by-side — pricing, strengths, tradeoffs, and fit.

SuperTokens

Open-source authentication you can self-host, with prebuilt UI and session management.

Auth.js

Open-source authentication for the web (formerly NextAuth.js), free and framework-native.

SuperTokens

Auth.js

At a glance

Open SourceFree TierEnterprise

● Established·From $0 self-hosted

Open SourceFree Tier

● Established·From $0

Overview

One-liner

Open-source authentication you can self-host, with prebuilt UI and session management.

One-liner

Open-source authentication for the web (formerly NextAuth.js), free and framework-native.

Maturity

Established

Maturity

Established

Open source

✓ Yes

Open source

✓ Yes

Pricing

Free tier

✓ Available

Self-hosted is free; managed has a free tier to 5,000 MAU

Free tier

✓ Available

Fully free and open source

Starts at

$0 self-hosted

Starts at

Model

Flat rate

Model

Flat rate

Enterprise

✓ Available

Enterprise

✕ None

Best for

✓ Best for

Teams wanting open-source, self-hosted authNo vendor lock-in or per-user fees

Data-residency / privacy-sensitive appsKeep user data in your own infrastructure

✓ Best for

Next.js apps wanting free, self-hosted authNative integration, no per-user cost

Developers comfortable owning auth plumbingFull control over sessions and providers

Not ideal for

✕ Not for

—

✕ Not for

—

Strengths

↑ Strengths

Open source and self-hostable

Prebuilt UI + session management

Transparent pricing

↑ Strengths

Free and open source

First-class Next.js integration

Many OAuth providers built in

Weaknesses

↓ Weaknesses

Smaller ecosystem than Auth0/Clerk

Self-hosting adds ops burden

↓ Weaknesses

Token rotation is broken, causing new tokens from external IDPs to be lost and old tokens to be reused indefinitely.

The v5 release is in beta with unclear stability and security implications for production use.

Session state is not updated on the client side after sign-out, requiring manual page reloads.

JWT modification for refreshing access tokens is not possible after initial login.

Full SuperTokens profile →Full Auth.js profile →