Auth.js vs Lucia

Auth.js and Lucia are both auth tools. Auth.js: Framework-agnostic auth library formerly NextAuth.js supporting 80+ providers Lucia: Lightweight session-based auth library for TypeScript with zero dependencies

Auth.js

Framework-agnostic auth library formerly NextAuth.js supporting 80+ providers

Category: Auth
Subcategory: Auth Library
Pricing: Open Source
Tier: open-source

authauth libraryide

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Lucia

Lightweight session-based auth library for TypeScript with zero dependencies

Category: Auth
Subcategory: Auth Library
Pricing: Open Source
Tier: open-source

authauth library

Full profile Visit site →

Key differences

Dimension	Auth.js	Lucia
Pricing	Open Source	Open Source
Capabilities	ide	Standard

Choose Auth.js if...

Auth.js fits your specific workflow and team preferences

Choose Lucia if...

Lucia fits your specific workflow and team preferences

Trade-offs at a glance

Derived from each tool's pricing tier, category, and tags.

Auth.js

Pros

Lower pricing barrier for trying it early.
Fits directly into coding workflows inside an editor.
Open-source footprint can improve flexibility and control.

Lucia

Pros

Lower pricing barrier for trying it early.
Open-source footprint can improve flexibility and control.

Frequently asked questions

Is Auth.js or Lucia better for beginners?: Both tools are accessible. Auth.js and Lucia are similar in approachability — try both and see which workflow clicks.
Which is cheaper, Auth.js or Lucia?: Both have a open-source pricing model. Auth.js: Open Source. Lucia: Open Source. Compare their specific plans to find the best value.
Can I use Auth.js and Lucia together?: Auth.js and Lucia serve similar roles, so most teams pick one. However, some developers prototype in one and build production code in the other.