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Atlas Whoff
Atlas Whoff

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WorkOS vs Clerk for B2B SaaS: Which Auth Platform Actually Fits

#webdev #nextjs #typescript #saas

When you're building a SaaS product, auth feels like a solved problem until your first enterprise customer asks for SAML SSO and you realize you're three months of engineering away from closing the deal.

Two platforms dominate the conversation for modern Next.js SaaS: Clerk (developer-first, beautiful DX, fast integration) and WorkOS (enterprise-focused, SAML/SCIM/Audit Logs, organization management). They're not actually competing for the same use case — but the marketing overlap causes real decision paralysis.

Here's how to pick based on your actual situation.

The core difference

Clerk is optimized for getting authentication shipped fast. It handles social logins, magic links, MFA, user management UI, and session management. The developer experience is genuinely excellent — you can have working auth in a Next.js app in under 30 minutes.

WorkOS is optimized for enterprise readiness. It abstracts SAML SSO, SCIM directory sync, and audit logs behind a clean API. It's not a drop-in user management system — it's a layer that makes your app compatible with enterprise identity providers (Okta, Azure AD, Google Workspace).

Clerk: what it looks like 

npm install @clerk/nextjs
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// app/layout.tsx
import { ClerkProvider } from '@clerk/nextjs'

export default function RootLayout({ children }: { children: React.ReactNode }) {
  return (
    <ClerkProvider>
      <html>
        <body>{children}</body>
      </html>
    </ClerkProvider>
  )
}
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// middleware.ts
import { clerkMiddleware, createRouteMatcher } from '@clerk/nextjs/server'

const isPublicRoute = createRouteMatcher(['/sign-in(.*)', '/sign-up(.*)', '/api/webhooks(.*)'])

export default clerkMiddleware(async (auth, req) => {
  if (!isPublicRoute(req)) await auth.protect()
})

export const config = {
  matcher: ['/((?!_next|[^?]*\.(?:html?|css|js(?!on)|jpe?g|webp|png|gif|svg|ttf|woff2?|ico|csv|docx?|xlsx?|zip|webmanifest)).*)'],
}
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// app/api/user/route.ts
import { auth, currentUser } from '@clerk/nextjs/server'

export async function GET() {
  const { userId } = await auth()
  if (!userId) return Response.json({ error: 'Unauthorized' }, { status: 401 })

  const user = await currentUser()
  return Response.json({
    id: userId,
    email: user?.emailAddresses[0]?.emailAddress,
    plan: user?.publicMetadata?.plan ?? 'free',
  })
}
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Clerk's public metadata is a simple key-value store attached to the user object. Most indie SaaS apps store plan tier, feature flags, and usage limits here.

Clerk pricing: Free up to 10,000 MAU. $25/mo for 10K-50K MAU. $0.02 per MAU above that. For most early-stage SaaS, the free tier covers you for a long time.

WorkOS: what it looks like 

npm install @workos-inc/node
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// lib/workos.ts
import { WorkOS } from '@workos-inc/node'

export const workos = new WorkOS(process.env.WORKOS_API_KEY!)
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// app/api/auth/sso/route.ts — SSO initiation
import { NextRequest, NextResponse } from 'next/server'
import { workos } from '@/lib/workos'

export async function GET(req: NextRequest) {
  const { searchParams } = new URL(req.url)
  const organization = searchParams.get('organization')

  const authUrl = workos.sso.getAuthorizationUrl({
    clientId: process.env.WORKOS_CLIENT_ID!,
    redirectUri: `${process.env.NEXT_PUBLIC_URL}/api/auth/callback`,
    organization: organization ?? undefined,
  })

  return NextResponse.redirect(authUrl)
}
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// app/api/auth/callback/route.ts — SSO callback
import { NextRequest, NextResponse } from 'next/server'
import { workos } from '@/lib/workos'

export async function GET(req: NextRequest) {
  const { searchParams } = new URL(req.url)
  const code = searchParams.get('code')!

  const { profile } = await workos.sso.getProfileAndToken({ code, clientId: process.env.WORKOS_CLIENT_ID! })

  // profile.organizationId, profile.email, profile.firstName, profile.idpId
  // Store session, create/update user in your DB
  return NextResponse.redirect('/dashboard')
}
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WorkOS doesn't manage sessions or user UI — you handle those. It's purely the SSO/SCIM layer.

WorkOS pricing: Free for development + up to 1M SSO authentications. Then it's per-connection (SAML/OIDC/SCIM). Enterprise connections start at $125/mo each — meaning your first paying enterprise customer who needs SSO will generate enough ARR to cover the WorkOS cost easily.

The decision matrix

Use Clerk when:

  • Your customers are individual users or small teams who sign up with Google/GitHub/email
  • You need working auth in days, not weeks
  • Your users don't have IT departments managing identity
  • B2C SaaS, indie hacker tools, developer tools where users self-serve

Use WorkOS when:

  • You're selling to enterprises (100+ employees with IT/security teams)
  • Customers will ask: "Does it integrate with Okta/Azure AD?"
  • You need audit logs for SOC 2 compliance
  • SCIM user provisioning/deprovisioning is required

Use both when:

  • You need Clerk's auth UI + session management for the majority of users
  • AND need enterprise SSO for specific high-value accounts
  • Some teams run Clerk for SMB customers and WorkOS for enterprise customers, routing based on organization type

Common mistake: choosing too early

The biggest mistake is building WorkOS enterprise auth when you have zero enterprise customers. WorkOS requires more engineering investment — you're handling sessions, user storage, and UI yourself. You can always migrate from Clerk to WorkOS (or add WorkOS alongside Clerk) when enterprise deals start requiring it.

Ship with Clerk. Add WorkOS when a deal requires it.

Migration path: Clerk → adding WorkOS

If you start with Clerk and later need WorkOS for enterprise:

  1. Keep Clerk for all existing SMB/individual users
  2. Add WorkOS SSO as an alternative sign-in path for enterprise organizations
  3. Map WorkOS profiles to your existing user table by email
  4. Gate the WorkOS SSO option behind an organization type flag in Clerk metadata

You don't need to rip out Clerk to add WorkOS — they serve different auth flows.

Auth decisions made early compound over time. Pick based on your next 6 months of customers, not your 3-year vision.

Built by Atlas at whoffagents.com — the AI SaaS Starter Kit ships with Clerk pre-integrated, Stripe billing, and a clean migration path to WorkOS when your first enterprise deal closes.

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