{"slug":"stytch","name":"Stytch","domain":"stytch.com","verdict":"As of 2026-07-16, ChatGPT, Claude, Gemini, Grok collectively rank Stytch first for passkey authentication api for consumer apps (one of 11 leaderboards it appears on). Source: https://modelsagree.com/product/stytch (modelsagree.com, CC BY 4.0).","best_rank":1,"categories":11,"brief":{"category":"best-passkey-authentication-api-for-consumer-apps","title":"Best passkey authentication API for consumer apps","rank":1,"of":8,"top":null,"day":"2026-07-17","why":[{"t":"Passkeys as a first-class primitive","m":["Claude","Grok"],"q":"passkeys as a first-class primitive rather than a bolt-on"},{"t":"Clean, flexible APIs and SDKs","m":["Claude","ChatGPT","Grok","Gemini"],"q":"clean REST/backend SDKs, native mobile SDKs (iOS/Android)"},{"t":"Strong fraud detection and recovery","m":["ChatGPT","Grok"],"q":"excellent fraud detection/recovery flows"},{"t":"Consumer-focused fallback flows and UX","m":["Claude","ChatGPT","Grok"],"q":"the fallback flows (email OTP, OAuth) a consumer app actually needs when a device lacks a passkey"}],"gap":[],"fix":[{"t":"Passkeys cannot be initial signup factor","m":["ChatGPT"],"q":"Passkeys cannot be the initial signup factor—users must first verify an email or phone"},{"t":"Fewer drop-in UI components","m":["Claude","Gemini"],"q":"Lacks drop-in UI widgets, requiring teams to design, code, and test their own login layouts and credential management interfaces."},{"t":"Higher costs at very large scale","m":["Grok"],"q":"Higher costs at very large scale compared to some alternatives"}]},"entries":[{"slug":"best-passkey-authentication-api-for-consumer-apps","title":"Best passkey authentication API for consumer apps","rank":1,"of":8,"score":14,"appearances":4,"modelRanks":{"ChatGPT":2,"Claude":1,"Gemini":5,"Grok":2},"reason":"Purpose-built consumer auth API with passkeys as a first-class primitive rather than a bolt-on — clean REST/backend SDKs, native mobile SDKs (iOS/Android) that wrap platform passkey APIs correctly, and the fallback flows (email OTP, OAuth) a consumer app actually needs when a device lacks a passkey; usage pricing scales sanely for consumer MAU volumes. Assumption: you want a hosted API, not self-hosted infra.","reasons":[{"model":"Claude","reason":"Purpose-built consumer auth API with passkeys as a first-class primitive rather than a bolt-on — clean REST/backend SDKs, native mobile SDKs (iOS/Android) that wrap platform passkey APIs correctly, and the fallback flows (email OTP, OAuth) a consumer app actually needs when a device lacks a passkey; usage pricing scales sanely for consumer MAU volumes. Assumption: you want a hosted API, not self-hosted infra."},{"model":"ChatGPT","reason":"Excellent consumer-specific APIs and SDKs, polished prebuilt login, flexible sessions, fraud controls, and a generous 10,000-MAU free tier; strongest near-tie when abuse prevention and multiple fallback methods matter."},{"model":"Grok","reason":"Passwordless-first design with deep native passkey support, excellent fraud detection/recovery flows, clean APIs, and strong consumer UX focus (magic links + passkeys); high real-world value for teams wanting minimal friction and strong security without bolting on features."},{"model":"Gemini","reason":"A highly flexible, API-first headless platform that simplifies passkey creation, Related Origin Requests, and auto-upgrades without forcing pre-packaged frontend wrappers."}],"fixes":[{"model":"ChatGPT","fix":"Passkeys cannot be the initial signup factor—users must first verify an email or phone—so it is not for truly passkey-first onboarding."},{"model":"Claude","fix":"You're wiring flows yourself — it ships fewer polished prebuilt UI components than Clerk, so teams wanting drop-in screens do more frontend work."},{"model":"Gemini","fix":"Lacks drop-in UI widgets, requiring teams to design, code, and test their own login layouts and credential management interfaces."},{"model":"Grok","fix":"Higher costs at very large scale compared to some alternatives; not the broadest enterprise SSO toolkit out-of-the-box."}],"updated":"2026-07-16","api":"https://modelsagree.com/api/v1/best/best-passkey-authentication-api-for-consumer-apps.json"},{"slug":"best-customer-identity-platforms-for-multi-tenant-b2b-saas","title":"Best customer identity platforms for multi-tenant B2B SaaS","rank":2,"of":9,"score":10,"appearances":3,"modelRanks":{"ChatGPT":1,"Claude":4,"Gemini":3},"reason":"Best overall balance of B2B-native organizations, tenant-level authentication policies, SAML/OIDC SSO, SCIM with group-to-role mapping, RBAC, M2M auth, and an embeddable self-service admin portal; unlimited organizations, five SSO/SCIM connections, and 10,000 MAUs free make it unusually strong value.","reasons":[{"model":"ChatGPT","reason":"Best overall balance of B2B-native organizations, tenant-level authentication policies, SAML/OIDC SSO, SCIM with group-to-role mapping, RBAC, M2M auth, and an embeddable self-service admin portal; unlimited organizations, five SSO/SCIM connections, and 10,000 MAUs free make it unusually strong value."},{"model":"Gemini","reason":"Highly customizable API-first architecture designed around B2B Organization primitives, providing granular programmatic control over tenant onboarding, multi-tenant discovery, RBAC, SAML SSO, and SCIM directory sync."},{"model":"Claude","reason":"Modern, developer-first API with a clean Organizations + RBAC data model, native SSO/SCIM, and strong session/M2M and fraud-prevention primitives; competitive, transparent pricing and good docs make it a strong value pick for teams building B2B auth fresh in 2026."}],"fixes":[{"model":"ChatGPT","fix":"Cloud-only and proprietary, so it is not for teams requiring self-hosting, air-gapped deployment, or infrastructure-level control."},{"model":"Claude","fix":"Younger enterprise track record and smaller ecosystem than Okta/Auth0; fewer prebuilt UI/admin components mean you assemble more yourself."},{"model":"Gemini","fix":"Lacks plug-and-play, pre-built admin portals for self-serve tenant IT administration, requiring developers to build custom management UI."}],"updated":"2026-08-03","api":"https://modelsagree.com/api/v1/best/best-customer-identity-platforms-for-multi-tenant-b2b-saas.json"},{"slug":"best-passkey-authentication-apis-for-mobile-apps","title":"Best passkey authentication APIs for mobile apps","rank":2,"of":9,"score":9,"appearances":3,"modelRanks":{"ChatGPT":2,"Claude":3,"Gemini":4},"reason":"Near-tie with Descope; mature iOS, Android, and React Native SDKs, strong REST/backend APIs, secure session handling, primary-or-secondary passkey use, recovery options, and 10,000 free MAUs","reasons":[{"model":"ChatGPT","reason":"Near-tie with Descope; mature iOS, Android, and React Native SDKs, strong REST/backend APIs, secure session handling, primary-or-secondary passkey use, recovery options, and 10,000 free MAUs"},{"model":"Claude","reason":"Excellent developer-experience WebAuthn/passkey APIs with well-maintained native iOS/Android SDKs, flexible headless primitives (not just prebuilt UI), and a broader auth platform (OTP, OAuth, sessions, fraud/device fingerprinting) so passkeys sit inside a complete stack."},{"model":"Gemini","reason":"Exceptional developer experience offering native mobile SDKs that seamlessly integrate passkeys with multi-modal fallback authentication (biometrics, magic links, OTP) and managed session state."}],"fixes":[{"model":"ChatGPT","fix":"A user must verify an email or phone through another factor before registering a passkey, preventing true passkey-first onboarding"},{"model":"Claude","fix":"Usage-based pricing scales with MAUs and can get expensive at consumer scale; you're adopting a full auth vendor, more than a focused passkey component."},{"model":"Gemini","fix":"Not for teams needing budget-friendly scaling or highly customized user schema migrations due to opinionated platform architecture and tier pricing."}],"updated":"2026-08-04","api":"https://modelsagree.com/api/v1/best/best-passkey-authentication-apis-for-mobile-apps.json"},{"slug":"best-enterprise-sso-apis-for-b2b-saas","title":"Best enterprise SSO APIs for B2B SaaS","rank":3,"of":7,"score":9,"appearances":3,"modelRanks":{"ChatGPT":2,"Claude":3,"Gemini":4},"reason":"Strongest value for a new B2B identity stack: native organizations, SSO, SCIM, RBAC, JIT provisioning, and an embeddable admin portal, with five enterprise connections and 10,000 active users free.","reasons":[{"model":"ChatGPT","reason":"Strongest value for a new B2B identity stack: native organizations, SSO, SCIM, RBAC, JIT provisioning, and an embeddable admin portal, with five enterprise connections and 10,000 active users free."},{"model":"Claude","reason":"Strong developer-first B2B suite — SSO (SAML/OIDC), SCIM, RBAC, and organizations modeled as first-class primitives, with clean APIs and honest usage-based pricing; genuinely competes with WorkOS on the same B2B use case. Near-tie with #4 on B2B focus."},{"model":"Gemini","reason":"Developer-first headless auth API with clear organization-level multi-tenancy, clean SAML/OIDC SSO endpoints, and transparent usage pricing without forced UI templates."}],"fixes":[{"model":"ChatGPT","fix":"It is best adopted as the primary authentication system, not as a lightweight SSO layer over a mature existing stack."},{"model":"Claude","fix":"Younger ecosystem and smaller enterprise track record than Okta; you're betting on a platform still filling out the long tail of IdP edge cases and integrations."},{"model":"Gemini","fix":"Requires developers to build their own frontend enterprise connection management portals."}],"updated":"2026-08-03","api":"https://modelsagree.com/api/v1/best/best-enterprise-sso-apis-for-b2b-saas.json"},{"slug":"best-scim-provisioning-apis-for-saas-applications","title":"Best SCIM provisioning APIs for SaaS applications","rank":3,"of":11,"score":5,"appearances":2,"modelRanks":{"ChatGPT":3,"Gemini":4},"reason":"Strongest choice when Stytch already owns authentication: SCIM changes directly update members, revoke deprovisioned users’ sessions, remove roles, support group-to-RBAC mappings and emit webhooks without application-side identity glue.","reasons":[{"model":"ChatGPT","reason":"Strongest choice when Stytch already owns authentication: SCIM changes directly update members, revoke deprovisioned users’ sessions, remove roles, support group-to-RBAC mappings and emit webhooks without application-side identity glue."},{"model":"Gemini","reason":"Seamlessly unifies B2B user authentication with enterprise SCIM provisioning, providing flexible API primitives and granular webhooks for teams building modern multi-tenant apps."}],"fixes":[{"model":"ChatGPT","fix":"Not a clean standalone SCIM layer for teams retaining another authentication system."},{"model":"Gemini","fix":"Adds unnecessary overhead and cost if your application only requires a standalone SCIM endpoint rather than a complete auth stack."}],"updated":"2026-08-03","api":"https://modelsagree.com/api/v1/best/best-scim-provisioning-apis-for-saas-applications.json"},{"slug":"best-authentication-provider-for-b2b-saas","title":"Best Authentication provider for B2B SaaS","rank":5,"of":8,"score":5,"appearances":2,"modelRanks":{"ChatGPT":2,"Claude":5},"reason":"Deep organization-first model, strong SDKs and APIs, granular tenant policies, MFA, RBAC, SSO, SCIM, M2M authentication, and embeddable customer-admin tooling with unusually transparent usage pricing","reasons":[{"model":"ChatGPT","reason":"Deep organization-first model, strong SDKs and APIs, granular tenant policies, MFA, RBAC, SSO, SCIM, M2M authentication, and embeddable customer-admin tooling with unusually transparent usage pricing"},{"model":"Claude","reason":"Strong B2B-specific product (organizations, SSO, SCIM, RBAC as first-class primitives) with modern passwordless/passkey support and device-fingerprinting fraud tooling; API-first design gives more backend flexibility than Clerk while covering the same enterprise checklist."}],"fixes":[{"model":"ChatGPT","fix":"Its separate B2B architecture is awkward for products where personal accounts and organizational accounts must blend seamlessly"},{"model":"Claude","fix":"Smaller ecosystem and community than the picks above — fewer integrations, examples, and hires who already know it; overlaps heavily with WorkOS/Clerk without clearly beating either, so it's usually the pick only when its fraud/passwordless stack matters."}],"updated":"2026-07-19","api":"https://modelsagree.com/api/v1/best/best-authentication-provider-for-b2b-saas.json"},{"slug":"best-authentication-platforms-for-ai-agent-tool-access","title":"Best authentication platforms for AI agent tool access","rank":6,"of":9,"score":4,"appearances":2,"modelRanks":{"Claude":4,"Gemini":4},"reason":"The strongest option on the inbound side of agent auth — making YOUR product an OAuth 2.1/PKCE identity provider so third-party agents and remote MCP clients can get user-consented, scoped tokens to your APIs; clean developer experience, dynamic client registration, and consent screens out of the box, which matters as every SaaS scrambles to expose an MCP server safely.","reasons":[{"model":"Claude","reason":"The strongest option on the inbound side of agent auth — making YOUR product an OAuth 2.1/PKCE identity provider so third-party agents and remote MCP clients can get user-consented, scoped tokens to your APIs; clean developer experience, dynamic client registration, and consent screens out of the box, which matters as every SaaS scrambles to expose an MCP server safely."},{"model":"Gemini","reason":"A developer-first IAM platform offering dedicated support for agent-to-app authentication, agent detection, and user-to-agent consent flows using standard OAuth 2.0/OIDC and Model Context Protocol (MCP)."}],"fixes":[{"model":"Claude","fix":"Covers agents calling into your app, not your agent calling out to third-party tools — teams needing outbound token brokering must pair it with something like Arcade, Composio, or Nango."},{"model":"Gemini","fix":"Only provides the authentication layer and does not handle token vaulting, automatic refreshing, or proxying requests for third-party SaaS APIs."}],"updated":"2026-07-17","api":"https://modelsagree.com/api/v1/best/best-authentication-platforms-for-ai-agent-tool-access.json"},{"slug":"best-multi-tenant-b2b-authentication-platform-for-saas","title":"Best multi-tenant B2B authentication platform for SaaS","rank":7,"of":9,"score":4,"appearances":1,"modelRanks":{"ChatGPT":2},"reason":"Near-tie with WorkOS and arguably stronger for deeply tenant-specific authentication: native isolated organizations, per-organization policies and RBAC, organization discovery, SSO, SCIM, JIT provisioning, M2M authentication, embedded administration, and transparent usage pricing","reasons":[{"model":"ChatGPT","reason":"Near-tie with WorkOS and arguably stronger for deeply tenant-specific authentication: native isolated organizations, per-organization policies and RBAC, organization discovery, SSO, SCIM, JIT provisioning, M2M authentication, embedded administration, and transparent usage pricing"}],"fixes":[{"model":"ChatGPT","fix":"Its ecosystem, integration catalog, and accumulated production guidance remain smaller than Auth0’s"}],"updated":"2026-07-16","api":"https://modelsagree.com/api/v1/best/best-multi-tenant-b2b-authentication-platform-for-saas.json"},{"slug":"best-delegated-oauth-platforms-for-agents-acting-on-behalf-of-users","title":"Best delegated OAuth platforms for agents acting on behalf of users","rank":7,"of":8,"score":2,"appearances":1,"modelRanks":{"Gemini":4},"reason":"Provides developer-first identity with Connected Apps and OAuth token vaulting, offering clean end-user consent flows, automatic token refresh, and reliable session isolation across web and agent interactions.","reasons":[{"model":"Gemini","reason":"Provides developer-first identity with Connected Apps and OAuth token vaulting, offering clean end-user consent flows, automatic token refresh, and reliable session isolation across web and agent interactions."}],"fixes":[{"model":"Gemini","fix":"Focuses purely on identity and token vaulting rather than agent tool orchestration or MCP runtime execution, meaning it is not for teams seeking built-in tool registries or agent-level policy gates."}],"updated":"2026-08-10","rank_history":{"days":["2026-08-03","2026-08-10"],"ranks":[7,null]},"api":"https://modelsagree.com/api/v1/best/best-delegated-oauth-platforms-for-agents-acting-on-behalf-of-users.json"},{"slug":"best-ai-agent-authentication-tool","title":"Best AI agent authentication tool","rank":9,"of":9,"score":2,"appearances":1,"modelRanks":{"Claude":4},"reason":"Best-in-class for the inbound direction — turning your product into an OAuth 2.1 authorization server so third-party agents and MCP clients can connect with dynamic client registration, granular scopes, and user consent, with strong docs and a developer experience that gets a remote MCP server authenticated in hours.","reasons":[{"model":"Claude","reason":"Best-in-class for the inbound direction — turning your product into an OAuth 2.1 authorization server so third-party agents and MCP clients can connect with dynamic client registration, granular scopes, and user consent, with strong docs and a developer experience that gets a remote MCP server authenticated in hours."}],"fixes":[{"model":"Claude","fix":"Weakest on the outbound side (your agent calling other services) and on fine-grained data authorization — most teams pair it with an FGA-style layer rather than using it alone."}],"updated":"2026-07-15","api":"https://modelsagree.com/api/v1/best/best-ai-agent-authentication-tool.json"},{"slug":"best-machine-to-machine-authentication-platforms-for-apis","title":"Best machine-to-machine authentication platforms for APIs","rank":9,"of":9,"score":1,"appearances":1,"modelRanks":{"ChatGPT":5},"reason":"Excellent managed developer experience with first-class M2M clients, scoped short-lived JWTs, local verification, metadata, management APIs, and clean integration with B2B organizations and RBAC.","reasons":[{"model":"ChatGPT","reason":"Excellent managed developer experience with first-class M2M clients, scoped short-lived JWTs, local verification, metadata, management APIs, and clean integration with B2B organizations and RBAC."}],"fixes":[{"model":"ChatGPT","fix":"Its machine credential and proof-of-possession choices are narrower than Auth0 or SPIRE, making it weaker for advanced high-assurance deployments."}],"updated":"2026-08-04","api":"https://modelsagree.com/api/v1/best/best-machine-to-machine-authentication-platforms-for-apis.json"}],"page":"https://modelsagree.com/product/stytch","check":"https://modelsagree.com/check?q=Stytch","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}