WorkOS vs. Auth0 vs. Frontegg: Which is best?

Choosing the right authentication and user management solution is critical for every startup. The right platform should safeguard your users' data, provide a good user experience, scale with your growth, and, perhaps most importantly, stay comfortably within your budget.

But with the overwhelming options available, how do you pinpoint the one that ticks all your boxes?

In this article, we'll compare three popular solutions, WorkOS, Auth0, and Frontegg, to help you decide which is best for you.

WorkOS: Built for scale, loved by developers

WorkOS is a platform designed to make your application enterprise-ready with just a few lines of code. It serves as a set of building blocks for swiftly adding enterprise features to your application, providing a unified interface that abstracts numerous enterprise integrations, and supports a multitude of programming languages and environments.

WorkOS doesn’t require you to outgrow it—because it’s built for scale from the beginning. You’re not duct-taping a starter tool, nor wrangling an aging monolith. Instead, you get infrastructure that grows with your company.

Features

• Authentication: With OAuth 2.0 integrations to popular providers like Google and Microsoft, compatibility with every major IdP, and full support for custom SAML/OIDC connections, WorkOS can support any enterprise customer. You also get access to MFA, Magic Auth, passkeys, social logins, enterprise logins, and more.
• User Management: Handles user creation, authentication, and profile management with support for email verification and identity linking.
• Authorization: With support for both RBAC and Fine-Grained Authorization, WorkOS has the access control tools you need.
• Organizations: First-class support for organizations, enabling modeling of workspaces, user memberships, and roles within organizations.
• Just-In-Time (JIT) Provisioning: Automatically creates user accounts during the first authentication, streamlining onboarding.
• Directory Sync: Integrates with SCIM and HRIS systems like BambooHR and Rippling to sync user data and manage lifecycles.
• Audit Logs: Captures and exports detailed logs of authentication events and administrative actions for compliance and monitoring.
• Self-serve management: WorkOS’s Admin Portal takes the pain out of onboarding your customers’ IT teams and configuring your app to work with their identity provider.
• Radar: Detect, verify, and block harmful behavior in real time. Radar protects your app against AI bots, account abuse, credential theft, and more.
• Vault: Securely stores and manages sensitive data, such as API keys and credentials, with encryption and access controls.
• Modern APIs & SDKs: Provides RESTful APIs and SDKs for languages like Next.js, Node.js, Python, Ruby, Go, and more, facilitating easy integration.
• Pricing: Unlike competitors who price by monthly active users, WorkOS charges a flat rate for each company you onboard — whether they bring 10 or 10,000 SSO users to your app — plus 1,000,000 monthly active users (MAU) for free.

Who is it good for?

If you're building a product that aspires to serve businesses—not just users—WorkOS is for you.

It’s not a toolkit you’ll need to rip out later. It’s not a starter pack with limitations waiting to surface. WorkOS is infrastructure—solid, scalable, and elegant—built from day one to meet the demands of enterprise software. Whether you’re signing your first B2B customer or rolling out onboarding flows for Fortune 500s, the same foundation applies. No rewrites, no workarounds.

With WorkOS, you're not duct-taping features onto a developer-friendly toy. And you're not trapped in the slow gravity well of a legacy monolith. You're using tools that feel modern, integrate cleanly, and unlock enterprise readiness as a natural extension of your growth—not a painful detour.

And unlike platforms where pricing feels like a moving target or a negotiation tactic, WorkOS gives you transparent, usage-based pricing you can actually plan around. No per-user surprises. No penalty for growth. Just clear value tied to real features.

WorkOS adapts to your architecture, respects your time, and earns your trust. It scales when you do, handles what matters (like SAML, SCIM, RBAC, and compliance), and never gets in your way.

If you're serious about building software for serious customers, WorkOS isn’t just a good fit—it’s the obvious one.

Auth0: Enterprise features at a cost

Auth0, now part of Okta, is a well-established identity management platform that offers a wide range of authentication and authorization features. It supports a wide range of protocols and can serve complex use cases. However, its unpredictable and escalating pricing structure, particularly as businesses scale, is the main reason teams migrate away from Auth0.

Features

• Authentication: Universal login, SSO, MFA, passwordless, passkeys.
• Enterprise features: SCIM, JIT, RBAC, OpenFGA.
• Security: Breached password detection, bot detection, compliance certifications.
• Pricing: Auth0's pricing is based on MAUs, and costs can escalate as your user base grows. For detailed and up-to-date pricing information, it's recommended to consult Auth0's official pricing page or contact their sales team. Here are some numbers at the time this article was written:
  • Free tier: Up to 25,000 Monthly Active Users (MAUs). Basic authentication methods, social login, and branded login pages. No custom domains, limited multi-factor authentication (MFA) options, and restricted support channels.
  • B2C plans: Essentials starts at $35/month for 500 MAUs. Professional starts at $240/month for 1,000 MAUs.
  • B2B plans: Essentials starts at $150/month for 500 MAUs with up to 3 enterprise SSO connections. Professional starts at $800/month for 500 MAUs with up to 5 enterprise SSO connections.
  • Enterprise plan: Custom pricing, based on specific requirements.

Who is it good for?

While Auth0 offers a robust set of features for authentication and authorization, teams often discover three recurring issues with Auth0:

• Pricing unpredictability: Auth0's pricing model is based on Monthly Active Users (MAUs), which can lead to significant cost increases as user bases grow. As you scale, the cost structure becomes harder to predict and manage. Additionally, essential enterprise features such as SAML SSO, SCIM provisioning, and custom domains are often gated behind higher-tier plans, making them inaccessible without a substantial financial commitment.
• Customization limitations: Making Auth0 “do what you want” often requires learning its proprietary syntax and bending to platform constraints. An example is SCIM. While supported, there are a lot of limitations in place:
  • Auth0 supports SCIM provisioning primarily for specific enterprise connections, like Okta and Azure AD. Customization options are more limited.
  • SCIM configuration is done through its dashboard and Management API. While functional, it may require more manual setup and lacks some of the streamlined tools offered by other providers, like WorkOS.
• Developer experience trade-offs: Despite its reputation, integrating and maintaining Auth0 in a modern stack can feel heavy-handed compared to more developer-centric tools.

The combination of escalating costs, feature gating, and migration complexities often leads organizations to seek alternative solutions that provide more predictable pricing and greater flexibility.

Frontegg: Built-in features at the cost of control

Frontegg is an authentication and user management platform. It bundles core auth features with tenant management, user portals, RBAC, and more.

Features

Frontegg offers a broad set of features designed to help teams quickly implement B2B auth and onboarding flows. Key features include:

• Authentication (including SSO, MFA, passwordless)
• Hosted admin and user management portals
• Role-based access control (RBAC)
• Tenant-aware multi-tenancy support

While the feature surface is wide, it’s tightly integrated and often hard to customize without adopting Frontegg’s opinionated architecture.

Pricing

Frontegg’s pricing is usage-based, with tiered plans that scale by monthly active users (MAUs). The free tier supports basic auth flows, but advanced capabilities like SSO, audit logs, and branding require a paid plan. These plans start at $300/month, and quickly scale beyond that for businesses with enterprise requirements or a growing user base. For companies needing SAML or fine-grained tenant support, costs can rise sharply.

Who it’s good for

Frontegg may suit early-stage SaaS products or internal tools that need a fast, out-of-the-box solution with minimal upfront engineering investment. But for teams with more nuanced needs, it presents a number of challenges:

• Tightly coupled UI components restrict control over the end-user experience, making it hard to fully own branding and interaction design.
• Limited extensibility means adapting to complex enterprise requirements (e.g., advanced SAML flows, custom role models) can be difficult or unsupported.
• Opaque architecture hides key logic around users and tenants, making future migrations or deeper integrations harder to implement.
• Developer experience issues—from sparse docs to confusing SDKs—can slow teams down during onboarding and troubleshooting.

Overall, Frontegg is best for teams looking for speed over flexibility. For long-term scalability, developer control, and support for enterprise-grade identity use cases, it may not be the best fit.

Choosing what’s right for you

If you're prototyping or running a personal project, a lightweight auth solution might be fine. But for teams building real businesses—especially B2B or SaaS platforms—authentication isn’t just a checkbox. It’s a core part of your product architecture.

WorkOS is purpose-built for this future. It’s the infrastructure layer that unlocks enterprise readiness without sacrificing speed or developer happiness.

Next steps

Ready to get started with WorkOS?

• Get started fast: With SDKs in every popular language, easy-to-follow documentation, and Slack-based support, you can implement SSO in minutes rather than weeks.
• Support every protocol: With OAuth 2.0 integrations to popular providers like Google and Microsoft, compatibility with every major IdP, and full support for custom SAML/OIDC connections, WorkOS can support any enterprise customer.
• Avoid the back-and-forth: WorkOS’s Admin Portal takes the pain out of onboarding your customers’ IT teams and configuring your app to work with their identity provider.
• Pricing that makes sense: Unlike competitors who price by monthly active users, WorkOS charges a flat rate for each company you onboard — whether they bring 10 or 10,000 SSO users to your app.

Sign up for WorkOS today, and start selling to enterprise customers tomorrow.