{"slug":"best-embedded-sso-and-directory-sync-apis-for-b2b-saas","title":"Best embedded SSO and directory sync APIs for B2B SaaS","question":"What are the best embedded SSO and directory sync APIs for B2B SaaS in 2026?","verdict":"As of 2026-09-04, ChatGPT, Claude, Gemini and Grok collectively rank WorkOS #1 for embedded sso and directory sync apis for b2b saas on ModelsAgree — a unanimous pick. The models' case: Best overall for the typical B2B SaaS team that already has authentication and wants to bolt on enterprise readiness without replacing it: exceptionally clean SAML/OIDC. The models' main caveat: Connection-based pricing gets expensive as the number of enterprise customers grows, especially when the same customer needs both SSO and Directory. The strongest alternative is Stytch — Best value if you want B2B authentication plus SSO and SCIM from one API-first platform: native organizations/multi-tenancy, SAML/OIDC, SCIM. Source: https://modelsagree.com/best/best-embedded-sso-and-directory-sync-apis-for-b2b-saas (modelsagree.com, CC BY 4.0).","category":"Auth","url":"https://modelsagree.com/best/best-embedded-sso-and-directory-sync-apis-for-b2b-saas","updated":"2026-09-04","models":["ChatGPT","Claude","Gemini","Grok"],"consensus":"All 4 models rank WorkOS the top pick","disagreement":null,"combined":[{"rank":1,"product":"WorkOS","domain":"workos.com","score":20,"appearances":4,"modelRanks":{"ChatGPT":1,"Claude":1,"Gemini":1,"Grok":1},"reason":"Best overall for the typical B2B SaaS team that already has authentication and wants to bolt on enterprise readiness without replacing it: exceptionally clean SAML/OIDC SSO APIs, mature Directory Sync across many providers, normalized users/groups, webhooks/Events API, self-service Admin Portal, strong SDKs, and unusually good handling of the ugly provider-specific edge cases. Near-tie with Stytch if you also need a complete auth stack."},{"rank":2,"product":"Stytch","domain":"stytch.com","score":14,"appearances":4,"modelRanks":{"ChatGPT":2,"Claude":2,"Gemini":3,"Grok":3},"reason":"Best value if you want B2B authentication plus SSO and SCIM from one API-first platform: native organizations/multi-tenancy, SAML/OIDC, SCIM provisioning, JIT provisioning, RBAC, group-to-role handling, embeddable admin tooling, excellent APIs, and a generous 5 SSO/SCIM connections free before predictable usage pricing. Very close to WorkOS; ranks second mainly because WorkOS is the cleaner drop-in choice when auth already exists."},{"rank":3,"product":"Frontegg","domain":"frontegg.com","score":7,"appearances":3,"modelRanks":{"ChatGPT":3,"Claude":3,"Gemini":5},"reason":"Particularly strong for SaaS products where enterprise customers need to administer identity themselves: polished embedded Admin Portal, tenant-native SAML/OIDC SSO, SCIM user/group provisioning, role mapping, APIs for connection management, and broader B2B user-management functionality. Its customer-facing administration experience is arguably the strongest here."},{"rank":4,"product":"BoxyHQ","domain":"boxyhq.com","score":6,"appearances":3,"modelRanks":{"ChatGPT":5,"Claude":5,"Gemini":2},"reason":"The leading open-source and self-hostable solution (via SAML/SCIM Jackson) for B2B enterprise federation; eliminates per-connection fees and vendor lock-in while providing complete data sovereignty inside your own VPC, alongside clean integrations into NextAuth, SuperTokens, and standard OAuth stacks."},{"rank":5,"product":"Descope","domain":"descope.com","score":4,"appearances":2,"modelRanks":{"ChatGPT":4,"Claude":4},"reason":"Strong B2B-native implementation with per-tenant SAML/OIDC connections, SCIM 2.0 provisioning, multiple IdPs per tenant, attribute/group-to-role mapping, self-service SSO Setup Suite, Admin Portal, and flexible workflow-based authentication. Particularly good when complicated tenant-specific authentication policies accompany the SSO requirement."},{"rank":6,"product":"Scalekit","domain":"scalekit.com","score":4,"appearances":1,"modelRanks":{"Grok":2},"reason":"Closest modular overlay to the category: SAML/OIDC + SCIM on Auth0, Cognito, Firebase, or custom auth without replacing sessions/users; embeddable or link-based admin portal for SSO and SCIM; first connection free then ~$60. Rank assumes you already have auth and want enterprise federation as an add-on. Near-tie with Stytch if you would rather buy orgs+sessions from the same vendor."},{"rank":7,"product":"PropelAuth","domain":"propelauth.com","score":2,"appearances":1,"modelRanks":{"Gemini":4},"reason":"Purpose-built for multi-tenant B2B SaaS with polished, ready-to-embed self-serve portals where enterprise IT admins can autonomously configure SAML SSO and SCIM syncing; dramatically shortens time-to-market for early- to mid-stage SaaS teams. Near-tie with Stytch for modern B2B development."},{"rank":8,"product":"SSOJet","domain":null,"score":2,"appearances":1,"modelRanks":{"Grok":4},"reason":"Same job as WorkOS (SAML/OIDC + SCIM + orgs, layerable on existing auth) at flat/low per-connection economics that stay predictable at 50–200 enterprise customers; SOC 2 and a usable self-serve setup path. Rank assumes unit economics at connection scale are the binding constraint and Okta/Entra/Google cover most of the book."},{"rank":9,"product":"Ory Polis","domain":null,"score":1,"appearances":1,"modelRanks":{"Grok":5},"reason":"Only serious open-source embedded option with both SAML/OIDC (Jackson-style SAML-as-OAuth) and SCIM directory sync, runnable self-hosted or as Ory’s managed service, so you keep data path and cost under your control. Rank assumes ops capacity and a need to avoid per-connection SaaS tax."}],"perModel":{"ChatGPT":[{"rank":1,"product":"WorkOS","reason":"Best overall for the typical B2B SaaS team that already has authentication and wants to bolt on enterprise readiness without replacing it: exceptionally clean SAML/OIDC SSO APIs, mature Directory Sync across many providers, normalized users/groups, webhooks/Events API, self-service Admin Portal, strong SDKs, and unusually good handling of the ugly provider-specific edge cases. Near-tie with Stytch if you also need a complete auth stack.","fix":"Connection-based pricing gets expensive as the number of enterprise customers grows, especially when the same customer needs both SSO and Directory Sync."},{"rank":2,"product":"Stytch","reason":"Best value if you want B2B authentication plus SSO and SCIM from one API-first platform: native organizations/multi-tenancy, SAML/OIDC, SCIM provisioning, JIT provisioning, RBAC, group-to-role handling, embeddable admin tooling, excellent APIs, and a generous 5 SSO/SCIM connections free before predictable usage pricing. Very close to WorkOS; ranks second mainly because WorkOS is the cleaner drop-in choice when auth already exists.","fix":"Adopting Stytch for maximum benefit usually means letting it own more of your identity/auth architecture than a narrowly scoped SSO/directory-sync layer would."},{"rank":3,"product":"Frontegg","reason":"Particularly strong for SaaS products where enterprise customers need to administer identity themselves: polished embedded Admin Portal, tenant-native SAML/OIDC SSO, SCIM user/group provisioning, role mapping, APIs for connection management, and broader B2B user-management functionality. Its customer-facing administration experience is arguably the strongest here.","fix":"It is a comparatively broad CIAM platform, so it can be heavier and more opinionated than necessary if all you want is two thin APIs for SSO and directory synchronization."},{"rank":4,"product":"Descope","reason":"Strong B2B-native implementation with per-tenant SAML/OIDC connections, SCIM 2.0 provisioning, multiple IdPs per tenant, attribute/group-to-role mapping, self-service SSO Setup Suite, Admin Portal, and flexible workflow-based authentication. Particularly good when complicated tenant-specific authentication policies accompany the SSO requirement.","fix":"Its flow-oriented authentication platform is more machinery than teams with an established auth system generally need, and its directory-sync ecosystem is less compelling than WorkOS's as a standalone integration layer."},{"rank":5,"product":"BoxyHQ","reason":"Best open-source/self-hosted option: provides multi-tenant enterprise SSO over SAML/OIDC plus SCIM 2.0 directory sync and can run as a standalone service or be embedded into an application, eliminating the per-connection SaaS tax and giving you infrastructure/data control.","fix":"You inherit deployment, upgrades, security hardening, IdP interoperability issues, monitoring, and support yourself; it is not comparable to the managed vendors operationally."}],"Claude":[{"rank":1,"product":"WorkOS","reason":"The category-defining choice for embedded enterprise readiness — first-class SAML/OIDC SSO plus SCIM Directory Sync unified under one normalized API and a white-label Admin Portal that offloads the IdP-config back-and-forth to the customer's own admin. Broadest directory connector coverage (Okta, Entra ID, Google, Rippling, etc.), generous \"free up to 1M MAU for AuthKit\" and usage-based SSO/Directory pricing that fits both seed-stage and scale-up B2B; excellent docs and event/webhook model for real-time provisioning. Assumes your need is genuinely enterprise deal-unblocking (SSO/SCIM/audit) rather than a full consumer auth stack.","fix":"Not a complete identity platform — it's an enterprise-features layer, so if you want it to own your entire login/session/user store you'll lean on AuthKit, which is less mature than dedicated CIAM; per-connection SSO pricing can get expensive at high enterprise-customer counts."},{"rank":2,"product":"Stytch","reason":"Strongest all-in-one B2B alternative — native Connected Apps, organization/RBAC model, SSO (SAML+OIDC) and SCIM directory sync in one platform with a clean API, plus device fingerprinting/fraud tooling most rivals lack. Good fit when you want auth and enterprise SSO/SCIM from a single vendor rather than bolting a layer onto existing auth.","fix":"Directory-sync connector breadth and admin self-serve portal maturity trail WorkOS; teams that only need embedded SSO/SCIM (and already have auth) pay for a broader platform they won't fully use."},{"rank":3,"product":"Frontegg","reason":"Most complete \"enterprise-grade B2B user management\" out of the box — multi-tenant org hierarchy, self-serve admin portal, SSO and SCIM provisioning, entitlements and granular RBAC, plus prebuilt embeddable admin UIs that cut front-end build time sharply. Best for teams that want the whole tenant-management surface, not just protocol plumbing.","fix":"Heavier and more opinionated — you adopt its tenancy/UI model, making it awkward to retrofit onto an app with an established user/org schema; pricing and complexity are overkill if you literally just need SSO+SCIM."},{"rank":4,"product":"Descope","reason":"Strong SSO + SCIM provisioning with a distinctive no-code flow builder for auth journeys, non-human/agent identity support, and fine-grained authorization — competitive, often lower-cost pricing and fast integration. Good value pick for teams wanting visual control over auth and enterprise connectors together.","fix":"Youngest of the major commercial players here, so ecosystem, third-party references, and directory-connector edge-case coverage are less battle-tested; the flow-builder abstraction can fight you on highly custom logic."},{"rank":5,"product":"BoxyHQ","reason":"The strongest open-source, self-hostable option — Apache-2.0 SAML/OIDC SSO plus a Directory Sync (SCIM) service you can run in your own infra with no per-connection vendor fees, ideal for data-residency/compliance-sensitive or cost-sensitive teams that want to avoid lock-in.","fix":"You own the operational burden (hosting, upgrades, connector debugging, IdP support) and there's no white-glove SLA or polished customer-facing admin portal — a poor trade for small teams without platform engineering capacity."}],"Gemini":[{"rank":1,"product":"WorkOS","reason":"The gold standard for modular enterprise federation; offers best-in-class SDKs, extensive IdP and HRIS directory connectors (SCIM, Okta, Entra ID, Google Workspace, Workday), and a turnkey Admin Portal that drops into existing auth architectures without forcing a replatform. Assumes the application already has established core user authentication and only needs enterprise readiness features.","fix":"Aggressive per-connection pricing models that scale steeply, making it cost-prohibitive for startups offering enterprise SSO on mid-tier or lower-ACV plans."},{"rank":2,"product":"BoxyHQ","reason":"The leading open-source and self-hostable solution (via SAML/SCIM Jackson) for B2B enterprise federation; eliminates per-connection fees and vendor lock-in while providing complete data sovereignty inside your own VPC, alongside clean integrations into NextAuth, SuperTokens, and standard OAuth stacks.","fix":"Requires self-hosting, operational maintenance, and infrastructure monitoring, with fewer out-of-the-box non-SCIM HRIS connectors compared to managed commercial aggregators; not for lean teams wanting zero DevOps overhead."},{"rank":3,"product":"Stytch","reason":"Highly flexible, API-first B2B identity engine with robust, fully programmatic SAML SSO and SCIM directory sync endpoints; natively handles complex multi-tenant organization models, JIT provisioning, and custom RBAC logic. Near-tie with PropelAuth for B2B engineering capabilities.","fix":"Pure headless architecture requires significant frontend engineering overhead because it lacks a zero-code, pre-built self-service configuration portal for end-customer IT admins."},{"rank":4,"product":"PropelAuth","reason":"Purpose-built for multi-tenant B2B SaaS with polished, ready-to-embed self-serve portals where enterprise IT admins can autonomously configure SAML SSO and SCIM syncing; dramatically shortens time-to-market for early- to mid-stage SaaS teams. Near-tie with Stytch for modern B2B development.","fix":"Functions primarily as a complete, opinionated auth and tenant management platform, making it a poor fit for teams that only need an isolated SSO/SCIM API layer bolted onto a legacy auth backend."},{"rank":5,"product":"Frontegg","reason":"Comprehensive enterprise readiness suite featuring an embedded self-service Admin Portal that handles SAML/OIDC SSO, SCIM provisioning, granular role management, and audit logs out of the box for enterprise-grade B2B applications.","fix":"Heavy client-side component footprint and monolithic integration model that can feel rigid, complex to customize deeply, and unsuited for teams seeking lightweight, headless API control."}],"Grok":[{"rank":1,"product":"WorkOS","reason":"Purpose-built SSO + Directory Sync APIs that sit on existing auth; widest real directory surface (SCIM plus Google Workspace pull, Workday/BambooHR/Rippling-class HRIS, SFTP, custom SCIM); ordered Events API plus webhooks; white-label Admin Portal lets customer IT self-serve both SSO and directory setup. Rank assumes the buyer is closing enterprise deals where IdP long-tail and deprovision reliability matter more than owning login UI.","fix":"Per-connection list price (~$125 SSO + ~$125 directory, volume down to ~$50) becomes the tax once you have dozens of enterprise tenants; not a full CIAM if you still need consumer login, orgs UI, and session UX from one vendor."},{"rank":2,"product":"Scalekit","reason":"Closest modular overlay to the category: SAML/OIDC + SCIM on Auth0, Cognito, Firebase, or custom auth without replacing sessions/users; embeddable or link-based admin portal for SSO and SCIM; first connection free then ~$60. Rank assumes you already have auth and want enterprise federation as an add-on. Near-tie with Stytch if you would rather buy orgs+sessions from the same vendor.","fix":"Younger catalog and less production-hardened HRIS/non-SCIM connectors than WorkOS; not the pick if you need Workday-class directories or a long track record on messy IdP edge cases."},{"rank":3,"product":"Stytch","reason":"Cohesive B2B Organizations API with SAML/OIDC, SCIM, JIT, group-to-RBAC, immediate session revoke on deprovision, and drop-in admin-portal components; 5 SSO/SCIM connections free then per-connection. Strongest when SSO/directory should live inside the same membership and session model rather than as a sidecar.","fix":"Directory coverage is SCIM-centric versus WorkOS’s HRIS/SFTP/pull sources; per-connection fees after the free pool, and you take Stytch as the identity system of record rather than a thin federation layer."},{"rank":4,"product":"SSOJet","reason":"Same job as WorkOS (SAML/OIDC + SCIM + orgs, layerable on existing auth) at flat/low per-connection economics that stay predictable at 50–200 enterprise customers; SOC 2 and a usable self-serve setup path. Rank assumes unit economics at connection scale are the binding constraint and Okta/Entra/Google cover most of the book.","fix":"Smaller ecosystem and thinner long-tail IdP/HRIS/event-reconciliation depth than WorkOS; not for teams that need the most battle-tested Admin Portal and directory normalization."},{"rank":5,"product":"Ory Polis","reason":"Only serious open-source embedded option with both SAML/OIDC (Jackson-style SAML-as-OAuth) and SCIM directory sync, runnable self-hosted or as Ory’s managed service, so you keep data path and cost under your control. Rank assumes ops capacity and a need to avoid per-connection SaaS tax.","fix":"You operate protocol, cert rotation, and customer onboarding yourself; connector polish, hosted IT-admin UX, and non-SCIM directories lag the commercial APIs."}]},"missedByModel":{"ChatGPT":[{"product":"Auth0","reason":"excellent enterprise authentication and mature SAML/OIDC support, but its B2B provisioning/SCIM story and pricing make it less attractive specifically as an embedded SSO + directory-sync API"},{"product":"Clerk","reason":"excellent developer experience and increasingly capable B2B organizations/enterprise SSO, but directory provisioning remains a weaker reason to choose it over the specialists above"}],"Claude":[{"product":"Auth0 by Okta","reason":"excellent enterprise SSO via Organizations/enterprise connections and huge ecosystem, but SCIM directory-sync provisioning is comparatively weaker/less turnkey and pricing/complexity skew heavy for the embedded-B2B use case"}],"Gemini":[{"product":"Auth0 by Okta","reason":"Pervasive brand with broad SAML coverage, but embedded multi-tenant SCIM directory sync remains fragmented, expensive, and clunky to embed natively"}],"Grok":[{"product":"Frontegg","reason":"excellent embedded tenant Admin Portal and SSO/SCIM, but it wants to own users, sessions, and tenancy rather than act as a thin SSO/directory API"},{"product":"Clerk","reason":"unified React/Next orgs+SSO with SCIM GA in 2026, but narrower IdP catalog and self-serve directory setup still behind WorkOS-class portals"}]}}