Best authentication provider for web apps
4 models · updated 2026-08-14
The verdict
Clerk leads — 3 of 4 models rank Clerk the top pick.
Not unanimous: Claude picks Auth0.
As of 2026-08-14, ChatGPT, Claude, Gemini and Grok collectively rank Clerk #1 for authentication provider for web apps on ModelsAgree by aggregate score. The models' case: Best default for modern web/SaaS teams prioritizing shipping speed: superb SDKs and prebuilt UX, robust sessions, passkeys/MFA, organizations/RBAC, machine auth, and. The models' main caveat: It is a proprietary hosted dependency, so it is not for teams requiring self-hosting or full identity-data-plane control. The strongest alternative is Auth0 — The most mature, broadly deployed identity platform. Not unanimous: Claude picks Auth0. Source: https://modelsagree.com/best/best-auth-provider (modelsagree.com, CC BY 4.0).
Combined ranking
- 1GPT #1Claude #2Gemini #1Grok #1
Best default for modern web/SaaS teams prioritizing shipping speed: superb SDKs and prebuilt UX, robust sessions, passkeys/MFA, organizations/RBAC, machine auth, and enterprise SSO, with 50,000 retained users free. Near-tied with Stytch; Clerk wins on practitioner experience.
+ model takes & fixes− hide details
GPT Best default for modern web/SaaS teams prioritizing shipping speed: superb SDKs and prebuilt UX, robust sessions, passkeys/MFA, organizations/RBAC, machine auth, and enterprise SSO, with 50,000 retained users free. Near-tied with Stytch; Clerk wins on practitioner experience.
Gemini Delivers unmatched developer experience with turnkey, polished UI components, native full-stack framework integrations, and seamless multi-tenant B2B organization switching out of the box.
Grok Best-in-class developer experience with drop-in React/Next.js components, first-class organizations/multi-tenancy, passkeys, MFA, session management and polished UX that lets typical SaaS teams ship production auth in hours; generous free tier (50k monthly retained users) plus reliable hosted infrastructure with strong security defaults make it the highest real-world value for the majority of modern web/SaaS practitioners
Claude Best-in-class developer experience for React/Next.js; prebuilt, deeply customizable UI components, organizations/multi-tenancy, and session management that ship in hours. Excellent for modern frontend-heavy SaaS.
Where it falls shortper GPT It is a proprietary hosted dependency, so it is not for teams requiring self-hosting or full identity-data-plane control.
per Claude Strongly optimized for the JS/TS + React ecosystem; less suited to non-JS backends, and enterprise SAML/SCIM depth trails Auth0/WorkOS.
per Gemini Proprietary hosted architecture creates vendor lock-in, with MAU pricing that escalates steeply for high-volume, low-margin B2C applications.
per Grok MAU-based pricing becomes material at scale and creates vendor dependency; not ideal for teams that require full data ownership or pure self-hosting
- 2GPT #4Claude #1Gemini #5Grok #3
The most mature, broadly deployed identity platform; deep protocol support (OIDC, SAML, WS-Fed), extensive social/enterprise connections, Actions/Rules for custom flows, strong enterprise SSO and compliance (SOC 2, FedRAMP). Safe default for B2B SaaS needing enterprise federation without building it.
+ model takes & fixes− hide details
Claude The most mature, broadly deployed identity platform; deep protocol support (OIDC, SAML, WS-Fed), extensive social/enterprise connections, Actions/Rules for custom flows, strong enterprise SSO and compliance (SOC 2, FedRAMP). Safe default for B2B SaaS needing enterprise federation without building it.
Grok Most mature and battle-tested platform with unmatched protocol breadth (SAML/OIDC/WS-Fed), Actions extensibility, compliance certifications and enterprise reliability that few regret choosing; strong for teams that will face real
GPT Deepest mature general-purpose option for heterogeneous stacks: broad protocol and identity-provider coverage, powerful Actions, mature SDKs, organizations, attack protection, and enterprise governance make it safest for unusually complex requirements.
Gemini The enterprise benchmark for legacy and modern protocol breadth (SAML, WS-Fed, OIDC), deep directory federation, and extensive enterprise compliance certifications.
Where it falls shortper GPT Its plan matrix and configuration surface create substantially higher total cost of ownership for ordinary apps.
per Claude Pricing scales painfully as MAUs and enterprise connections grow; can feel heavyweight and locks you into its extensibility model.
per Gemini Steep pricing escalation cliffs, complex enterprise sales gating, and administrative legacy bloat that slow down early-to-mid-stage product teams.
- 3GPT #3Claude #3Gemini #2Grok —
The premier choice for B2B SaaS needing enterprise readiness, simplifying complex enterprise SSO (SAML/OIDC), SCIM directory sync, and RBAC via AuthKit without requiring custom protocol plumbing.
+ model takes & fixes− hide details
Gemini The premier choice for B2B SaaS needing enterprise readiness, simplifying complex enterprise SSO (SAML/OIDC), SCIM directory sync, and RBAC via AuthKit without requiring custom protocol plumbing.
GPT Best B2B-SaaS specialist: polished authentication, first-class organizations, SAML/OIDC SSO, Directory Sync, Admin Portal, RBAC, passkeys, and one million MAU free make enterprise readiness unusually quick.
Claude Purpose-built for the "enterprise-ready" jump — SSO (SAML/OIDC), SCIM directory sync, audit logs, and admin portal as clean APIs; AuthKit adds hosted auth. Unmatched value for SaaS selling upmarket.
Where it falls shortper GPT Per-customer SSO and Directory Sync charges become expensive when many smaller tenants require them.
per Claude Narrower than a full IdP for consumer/social login at scale; its sweet spot is B2B enterprise features, not high-volume consumer identity.
per Gemini Purpose-built for B2B SaaS; over-engineered and cost-inefficient for consumer-facing apps requiring standard social or consumer logins.
- 4GPT —Claude —Gemini —Grok #2
Modern open-source TypeScript framework offering comprehensive built-in features (organizations, passkeys, MFA, plugins for SSO/SCIM) with full data ownership in your own database, zero per-user fees, high adoption and active development (including Vercel backing while remaining MIT); delivers equivalent capability to commercial options without lock-in or recurring auth bills for teams comfortable running their own stack
+ model takes & fixes− hide details
Grok Modern open-source TypeScript framework offering comprehensive built-in features (organizations, passkeys, MFA, plugins for SSO/SCIM) with full data ownership in your own database, zero per-user fees, high adoption and active development (including Vercel backing while remaining MIT); delivers equivalent capability to commercial options without lock-in or recurring auth bills for teams comfortable running their own stack
Where it falls shortper Grok Operational burden of managing database, sessions, security patches and scaling falls on you; setup and maintenance heavier than pure SaaS drop-ins
- 5GPT #2Claude —Gemini —Grok —
The strongest feature-to-price bundle: excellent APIs and components, first-class B2B organizations, per-organization policies, SSO, SCIM, RBAC, JIT provisioning, M2M auth, and strong fraud controls; 10,000 MAU and five SSO/SCIM connections are free. Arguably first for security-heavy B2B SaaS.
+ model takes & fixes− hide details
GPT The strongest feature-to-price bundle: excellent APIs and components, first-class B2B organizations, per-organization policies, SSO, SCIM, RBAC, JIT provisioning, M2M auth, and strong fraud controls; 10,000 MAU and five SSO/SCIM connections are free. Arguably first for security-heavy B2B SaaS.
Where it falls shortper GPT Its separate Consumer and B2B identity models make hybrid individual-plus-workspace products awkward.
- 6GPT —Claude —Gemini #3Grok —
Exceptional architectural efficiency and cost value for full-stack teams by pairing open-source authentication directly with PostgreSQL Row Level Security (RLS), removing significant backend boilerplate.
+ model takes & fixes− hide details
Gemini Exceptional architectural efficiency and cost value for full-stack teams by pairing open-source authentication directly with PostgreSQL Row Level Security (RLS), removing significant backend boilerplate.
Where it falls shortper Gemini Strongly coupled to PostgreSQL and the Supabase ecosystem, making it awkward for teams using non-Postgres data architectures or seeking a standalone auth service.
- 7GPT —Claude #4Gemini —Grok —
The leading open-source, self-hostable IdP; full OIDC/SAML, realms, fine-grained authz, no per-MAU cost, complete data control. Ideal where sovereignty, cost at scale, or on-prem is required.
+ model takes & fixes− hide details
Claude The leading open-source, self-hostable IdP; full OIDC/SAML, realms, fine-grained authz, no per-MAU cost, complete data control. Ideal where sovereignty, cost at scale, or on-prem is required.
Where it falls shortper Claude Operationally heavy — you own upgrades, HA, scaling, and security hardening; DX and polish lag hosted rivals.
- 8GPT —Claude —Gemini #4Grok —
Offers the best modular open-source and self-hostable architecture with complete data ownership, robust session security, and a managed tier that avoids vendor lock-in.
+ model takes & fixes− hide details
Gemini Offers the best modular open-source and self-hostable architecture with complete data ownership, robust session security, and a managed tier that avoids vendor lock-in.
Where it falls shortper Gemini Demands more engineering effort for UI implementation and ongoing infrastructure maintenance compared to fully turnkey hosted options.
- 9GPT —Claude #5Gemini —Grok —
Deep AWS-native integration, IAM/API Gateway tie-ins, and very low cost at scale for consumer user pools; sensible when already all-in on AWS.
+ model takes & fixes− hide details
Claude Deep AWS-native integration, IAM/API Gateway tie-ins, and very low cost at scale for consumer user pools; sensible when already all-in on AWS.
Where it falls shortper Claude Notoriously awkward DX, rigid customization, and painful migrations; poor fit outside the AWS ecosystem.
- 10GPT #5Claude —Gemini —Grok —
Strongest broadly applicable open-source/managed hybrid: standards-first OIDC/OAuth/SAML, passkeys/MFA, multi-tenant organizations, delegated administration, service accounts, APIs, and exhaustive audit history without surrendering deployment control.
+ model takes & fixes− hide details
GPT Strongest broadly applicable open-source/managed hybrid: standards-first OIDC/OAuth/SAML, passkeys/MFA, multi-tenant organizations, delegated administration, service accounts, APIs, and exhaustive audit history without surrendering deployment control.
Where it falls shortper GPT It is an IAM platform rather than a drop-in app-auth experience, so implementation and operation require more expertise.
By use case
How this board's leaders rank when the same four models are asked a more specific question.
| Product | This board | B2B SaaS | passkey API consumer |
|---|---|---|---|
| Clerk | #1 | #2 | #2 |
| Auth0 | #2 | #3 | #7 |
| WorkOS | #3 | #1 | — |
| Better Auth | #4 | — | — |
| Stytch | #5 | #5 | #1 |
| Supabase Auth | #6 | — | #8 |
| Keycloak | #7 | #6 | — |
Rank history
Just missed the top 5
GPT Better Auth — excellent MIT-licensed TypeScript control and breadth, but still young and self-operated for identity-critical infrastructure · Supabase Auth — outstanding alongside Supabase and Postgres RLS, but weaker as a standalone B2B provider for organizations, SCIM, and customer administration
Claude Supabase Auth — excellent bundled auth for the Postgres/Supabase stack and generous free tier, but tied to that platform and thinner on enterprise SSO/SCIM · Firebase Authentication — fast consumer/mobile onboarding, but limited enterprise federation and Google-ecosystem gravity
Gemini Keycloak — Feature-complete open-source enterprise identity engine, but weighed down by heavy Java resource demands and complex DevOps configuration overhead · Firebase Authentication — Accessible and low-cost for basic consumer apps, but suffers from stagnant feature development and weak native B2B multi-tenancy
By model
ChatGPT
- 1.Clerk
- 2.Stytch
- 3.WorkOS
- 4.Auth0
- 5.ZITADEL
Claude
- 1.Auth0
- 2.Clerk
- 3.WorkOS
- 4.Keycloak
- 5.Amazon Cognito
Gemini
- 1.Clerk
- 2.WorkOS
- 3.Supabase Auth
- 4.SuperTokens
- 5.Auth0
Grok
- 1.Clerk
- 2.Better Auth
- 3.Auth0
Common questions
What is the best authentication provider for web apps according to AI models?
Clerk leads. 3 of 4 models rank Clerk the top pick. The current top 3: Clerk, Auth0, WorkOS. Ranked by asking ChatGPT, Claude, Gemini, Grok the same buying question and merging their top-5 picks, updated 2026-08-14. Source: modelsagree.com.
Which authentication provider for web apps did each AI model pick first?
ChatGPT: Clerk. Claude: Auth0. Gemini: Clerk. Grok: Clerk.
Do the AI models agree on the best authentication provider for web apps?
Not unanimous. Claude picks Auth0.
What changed in the latest authentication provider for web apps ranking?
In the latest poll (2026-08-14): Auth0 climbed 2 spots, Better Auth climbed 2 spots; WorkOS dropped 1 spot, Supabase Auth dropped 3 spots, Keycloak dropped 2 spots; Stytch and SuperTokens entered the ranking. The models are re-polled on demand, so this ranking moves.
How is this authentication provider for web apps ranking made?
ChatGPT, Claude, Gemini, Grok are each asked the same buying question in a fresh session with no system steering. Their top-5 answers are merged (rank 1 = 5 pts … rank 5 = 1 pt) into the consensus ranking, re-polled on demand and tracked over time.
More on how polling works: full methodology →
Also from us
OneTake is a screen recorder we make. It records a browser tab and uploads as it goes, so the share link is already copied when you hit stop. Free goes to five minutes. The $6/mo Pro is really about 1080p — 720p takes a 1920-wide window down to 1280 and you can’t read the thing you were pointing at.
Cite this ranking
ModelsAgree, “Best authentication provider for web apps” — merged ranking from ChatGPT, Claude, Gemini & Grok, polled 2026-08-14. https://modelsagree.com/best/best-auth-provider (CC BY 4.0)
Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled on demand