Stytch vs WorkOS

Stytch and WorkOS both provide authentication infrastructure for modern applications, but Stytch is a developer-first identity platform with deep passwordless primitives, Connected Apps for standards-compliant OAuth 2.0 authorization server functionality with Dynamic Client Registration and delegated consent, and agent abuse detection and throttling controls, while WorkOS is an identity platform with a self-service Admin Portal for enterprise SSO and SCIM provisioning, a Fine-Grained Authorization engine, and MCP integration. WorkOS wins on enterprise B2B identity depth, FGA for document-level authorization, and MCP server readiness; Stytch wins on passwordless authentication depth, Connected Apps for dynamic agent onboarding, and agent abuse throttling controls.

Where Stytch wins

• Deep Passwordless Authentication Primitives. Stytch was built passwordless-first, providing Magic Links, One-Time Passcodes via SMS and WhatsApp, Email OTP, Passkeys, Biometrics, and WebAuthn with minimal integration overhead. WorkOS provides standard passwordless flows in AuthKit but focuses on enterprise SSO and B2B identity management rather than passwordless-first authentication.

• Connected Apps with Dynamic Client Registration for Agent Onboarding. Stytch's Connected Apps enables applications to function as OAuth 2.0 authorization servers with Dynamic Client Registration, allowing AI agents to onboard as OAuth clients at runtime without static pre-registration and acquire scoped access tokens with explicit user consent. WorkOS provides native MCP integration and standards-compliant agent authorization, but its Dynamic Client Registration story is less directly productized for agent onboarding than Stytch's Connected Apps.

• Agent Abuse Detection and Throttling. Stytch detects and throttles automated traffic targeting authentication endpoints, including agent-specific abuse prevention for AI workloads generating high-frequency, non-human authentication patterns. WorkOS does not provide equivalent agent-specific abuse throttling primitives as a productized feature.

Where WorkOS wins

• Admin Portal for Enterprise SSO and SCIM. WorkOS provides a hosted Admin Portal enabling business customers to self-configure and manage their own SAML SSO and SCIM directory sync connections without engineering involvement. Stytch provides enterprise SSO support but does not offer an equivalent self-service Admin Portal experience for enterprise customers to independently manage their identity provider connections and directory provisioning.

• Fine-Grained Authorization. WorkOS includes a built-in FGA engine, enabling relationship-based access control for modeling complex, resource-level permissions beyond what standard RBAC can express, well-suited for enforcing document-level access in data-intensive applications. Stytch provides no equivalent Fine-Grained Authorization engine; enforcing per-resource permissions for RAG pipelines or complex multi-tenant data access requires entirely custom implementation outside the Stytch platform.

• AuthKit Drop-In UI with Free Tier Up to 1M MAUs. WorkOS provides AuthKit as a hosted, brandable authentication UI with free pricing up to one million monthly active users. Stytch's pricing model does not include an equivalent free-tier threshold at that scale, making WorkOS more cost-efficient for high-volume applications that do not yet generate revenue proportional to their user count.

The agentic difference

WorkOS approaches agentic identity through two layers. Its MCP integration enables AI agents to authenticate against WorkOS as a standards-compliant authorization server. Its FGA engine provides relationship-based access control for enforcing document-level permissions in RAG pipelines, scoping what data an AI agent can retrieve based on per-resource access rules. WorkOS also provides a Vault for encrypted secret storage, though it functions as an encrypted key store rather than a managed outbound token vault that auto-refreshes OAuth credentials for third-party integrations.

Stytch provides agentic primitives centered on Connected Apps. Dynamic Client Registration enables agents to onboard at runtime, and its consent flow issues scoped tokens with explicit user authorization. M2M tokens support service-to-service authentication, and agent abuse throttling addresses operational abuse patterns. However, Stytch provides no outbound token vault and no Fine-Grained Authorization engine for RAG scoping. Neither platform supports CIBA for asynchronous human-in-the-loop authorization workflows.

When to pick which

• Pick WorkOS when building a B2B SaaS application that requires a self-service enterprise SSO and SCIM provisioning portal for business customers, because its Admin Portal eliminates the custom development that Stytch's enterprise SSO requires for customer self-service onboarding.

• Pick WorkOS when deploying AI agents that need document-level permission enforcement in RAG pipelines, because its FGA engine enables relationship-based access control that Stytch has no native equivalent for.

• Pick Stytch when building passwordless-first applications where Magic Links, OTP, Passkeys, and WebAuthn must be first-class, deeply optimized primitives rather than secondary features layered onto an enterprise-focused platform.

• Pick Stytch when deploying AI agents that need Dynamic Client Registration and standards-compliant delegated consent for dynamic runtime onboarding, because its Connected Apps feature provides a more directly productized mechanism for agent OAuth client registration than WorkOS's AuthKit-based MCP layer.