Auth.js vs Kinde

Auth.js and Kinde are both auth tools. Auth.js: Framework-agnostic auth library formerly NextAuth.js supporting 80+ providers Kinde: All-in-one auth with built-in orgs RBAC feature flags and billing hooks for SaaS

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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Kinde

All-in-one auth with built-in orgs RBAC feature flags and billing hooks for SaaS

Category: Auth
Subcategory: Auth Provider
Pricing: Free (10.5K MAU) / $25/mo+
Tier: free

authauth provider

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Key differences

Dimension	Auth.js	Kinde
Pricing Model	Open Source (open-source)	Free (10.5K MAU) / $25/mo+ (free)
Platform	Auth Library	Auth Provider
Capabilities	auth library, ide	auth provider

Choose Auth.js if...

Auth.js fits your specific workflow and team preferences

Choose Kinde if...

Kinde 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.

Kinde

Pros

Lower pricing barrier for trying it early.

Frequently asked questions

Is Auth.js or Kinde better for beginners?: Both tools are accessible. Auth.js and Kinde are similar in approachability — try both and see which workflow clicks.
Which is cheaper, Auth.js or Kinde?: Auth.js (Open Source) is the more affordable option. Kinde (Free (10.5K MAU) / $25/mo+) costs more but may offer additional features.
Can I use Auth.js and Kinde together?: Auth.js and Kinde serve similar roles, so most teams pick one. However, some developers prototype in one and build production code in the other.