Comparison

Auth.js (NextAuth.js) vs Clerk

On the evidence we track, Clerk leads this comparison with a composite score of 71/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Auth.js (NextAuth.js) full profile →Clerk full profile →

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Auth.js (NextAuth.js)52

★Clerk71

Attribute comparison across 2 tools
Attribute	Auth.js (NextAuth.js)	ClerkLeader
vioscaleAI score	52 / 100low · 40%	71 / 100medium · 71%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	freemium
Price levelpricing.price_level	free	mid
Starting pricepricing.starting_price	-	$20
Transparentpricing.transparent	✓	✓
Integrations
Countintegrations.count	1	7
Security
Certificationssecurity.certifications	-	SOC 2 Type II
Disclosure policysecurity.disclosure_policy	✓	✓
Gdprsecurity.gdpr	-	✓
Hipaasecurity.hipaa	-	✓
Scorecardsecurity.scorecard	5.5	-
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40next-auth%2Fprisma-adapter&per_page=100 · Last 12m: 0	-
Reliability
Sla pctreliability.sla_pct	-	99.99
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	6,629	-
Github starsadoption.github_stars	28,363	-
Package downloads weeklyadoption.package_downloads_weekly	6,703,298	-
Activity
Commits last 30dactivity.commits_last_30d	0	-
Release
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	ISC	-
Language
Primarylanguage.primary	TypeScript	-
Market
Availabilitymarket.availability	-	Available worldwide
Content
Faqcontent.faq	5 items	6 items

Score

vioscaleAI score

Auth.js (NextAuth.js)52 / 100low · 40%

Clerk71 / 100medium · 71%

Pricing

Free tier

Auth.js (NextAuth.js)✓

Clerk✓

Model

Auth.js (NextAuth.js)open_source

Clerkfreemium

Price level

Auth.js (NextAuth.js)free

Clerkmid

Starting price

Auth.js (NextAuth.js)–

Clerk$20

Transparent

Auth.js (NextAuth.js)✓

Clerk✓

Integrations

Count

Auth.js (NextAuth.js)1

Clerk7

Security

Certifications

Auth.js (NextAuth.js)–

ClerkSOC 2 Type II

Disclosure policy

Auth.js (NextAuth.js)✓

Clerk✓

Gdpr

Auth.js (NextAuth.js)–

Clerk✓

Hipaa

Auth.js (NextAuth.js)–

Clerk✓

Scorecard

Auth.js (NextAuth.js)5.5

Clerk–

Soc2

Auth.js (NextAuth.js)–

Clerk✓

Vulnerabilities

Auth.js (NextAuth.js)Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40next-auth%2Fprisma-adapter&per_page=100 · Last 12m: 0

Clerk–

Reliability

Sla pct

Auth.js (NextAuth.js)–

Clerk99.99

Status page

Auth.js (NextAuth.js)✓

Clerk✓

Adoption

Dependent repos

Auth.js (NextAuth.js)6,629

Clerk–

Github stars

Auth.js (NextAuth.js)28,363

Clerk–

Package downloads weekly

Auth.js (NextAuth.js)6,703,298

Clerk–

Activity

Commits last 30d

Auth.js (NextAuth.js)0

Clerk–

Release

History

Auth.js (NextAuth.js)20 items

Clerk–

License

Spdx

Auth.js (NextAuth.js)ISC

Clerk–

Language

Primary

Auth.js (NextAuth.js)TypeScript

Clerk–

Market

Availability

Auth.js (NextAuth.js)–

ClerkAvailable worldwide

Content

Faq

Auth.js (NextAuth.js)5 items

Clerk6 items

Capabilities

Feature-by-feature on the axes that matter for auth & identity software. “-” means undocumented, not absent.

Capability comparison for Auth & Identity Software
Capability	Auth.js (NextAuth.js)	Clerk
Deployment
Hosting	Self-hosted only	Cloud only
Methods
Social login	✓	✓
Passwordless	✓	✓
Passkeys / WebAuthn	✓	✓
Multi-factor auth	-	✓
Enterprise
SAML SSO	-	✓
SCIM provisioning	-	✓
B2B / multi-tenancy	-	✓
Standards
OpenID Connect provider	✓	✓
Delivery
Hosted UI	Headless	Both
Access
RBAC	-	✓
Licensing
Self-hostable OSS core	✓	✓

Deployment

Hosting

Auth.js (NextAuth.js)Self-hosted only

ClerkCloud only

Methods

Social login

Auth.js (NextAuth.js)✓

Clerk✓

Passwordless

Auth.js (NextAuth.js)✓

Clerk✓

Passkeys / WebAuthn

Auth.js (NextAuth.js)✓

Clerk✓

Multi-factor auth

Auth.js (NextAuth.js)-

Clerk✓

Enterprise

SAML SSO

Auth.js (NextAuth.js)-

Clerk✓

SCIM provisioning

Auth.js (NextAuth.js)-

Clerk✓

B2B / multi-tenancy

Auth.js (NextAuth.js)-

Clerk✓

Standards

OpenID Connect provider

Auth.js (NextAuth.js)✓

Clerk✓

Delivery

Hosted UI

Auth.js (NextAuth.js)Headless

ClerkBoth

Access

RBAC

Auth.js (NextAuth.js)-

Clerk✓

Licensing

Self-hostable OSS core

Auth.js (NextAuth.js)✓

Clerk✓

What each one is

The product in its own terms, so the numbers below have context.

Auth.js (NextAuth.js)

A suite of open-source authentication packages built on standard web APIs, designed to work with any JavaScript framework and runtime, with support for OAuth, passwordless authentication, and WebAuthn.

Independently observed

Clerk

Leader

Provides embeddable components and APIs for adding authentication, profile management, organizations, and subscription billing to applications. Supports enterprise features like SAML, SCIM provisioning, and multi-tenancy.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Auth.js (NextAuth.js)

Open sourceFree tier

Free and open source

as of 2026-08-14verify ↗

Clerk

Leader

from $20/moSubscriptionFree tier

Free up to 50K MRU. Pro from $20/mo billed annually (includes 50K MRU + 1 enterprise connection). Add-ons available.

FreeFree
- Social authentication (Google, GitHub, Facebook)
- Email/password authentication
- Magic links
- Organizations
- Multifactor authentication
- +1 more
Pro$20/mo billed annually (includes 50K MRU + 1 enterprise connection)
- 50K monthly retained users included
- 1 enterprise SSO connection included
- Custom session lifetime
- Clerk branding removal
- Directory sync
- +5 more

as of 2026-10-05verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Auth.js (NextAuth.js)	Clerk
WebPlatforms	✓	✓
iOSPlatforms	✗	✓
CLIPlatforms	✗	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✗

Platforms

Web

Auth.js (NextAuth.js)✓

Clerk✓

iOS

Auth.js (NextAuth.js)✗

Clerk✓

CLI

Auth.js (NextAuth.js)✗

Clerk✓

Deployment

Cloud / SaaS

Auth.js (NextAuth.js)✓

Clerk✓

Self-hosted

Auth.js (NextAuth.js)✓

Clerk✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)

GitHub

Auth.js (NextAuth.js)

1 total - 0 not shared

GitHub

Independently observed

Clerk

Leader

11 total - 10 not shared

Google OAuth
GitHub OAuth
Google Workspace
Convex
MCP
Stripe
Okta Workforce
Microsoft Entra ID
Google
Facebook

Independently observed

Still deciding?

Auth.js (NextAuth.js) or Clerk: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.