Best authentication provider for web apps
4 models · updated 2026-07-15
The verdict
Clerk leads — 3 of 4 models rank Clerk the top pick.
Not unanimous: ChatGPT picks WorkOS AuthKit.
As of 2026-07-15, ChatGPT, Claude, Gemini and Grok collectively rank Clerk #1 for authentication provider for web apps on ModelsAgree by aggregate score. The models' case: Best developer experience in the category — drop-in prebuilt UI components, first-class Next.js/React SDKs, built-in B2B organizations/multi-tenancy, MFA and session. The models' main caveat: JavaScript-ecosystem-centric and fully vendor-hosted — weak fit for non-JS backends, air-gapped/self-host requirements, or teams wary of per-MAU. The strongest alternative is Auth0 — The most complete managed identity platform — every protocol (OIDC, SAML, WS-Fed), enormous integration catalog, Actions for custom logic, mature. Not unanimous: ChatGPT picks WorkOS AuthKit. Source: https://modelsagree.com/best/best-auth-provider (modelsagree.com, CC BY 4.0).
Combined ranking
- 1GPT #2Claude #1Gemini #1Grok #1
Best developer experience in the category — drop-in prebuilt UI components, first-class Next.js/React SDKs, built-in B2B organizations/multi-tenancy, MFA and session management that work out of the box, generous 10k-MAU free tier; assumes the typical practitioner is a product team shipping a SaaS app fast rather than an identity specialist. Near-tie with Auth0 — Clerk wins on speed-to-ship, Auth0 on breadth.
+ model takes & fixes− hide details
Claude Best developer experience in the category — drop-in prebuilt UI components, first-class Next.js/React SDKs, built-in B2B organizations/multi-tenancy, MFA and session management that work out of the box, generous 10k-MAU free tier; assumes the typical practitioner is a product team shipping a SaaS app fast rather than an identity specialist. Near-tie with Auth0 — Clerk wins on speed-to-ship, Auth0 on breadth.
Gemini Offers the absolute best developer experience and fastest implementation speed for JS/TS stacks with pre-built, highly polished UI components (near-tied with Kinde for early-stage setups, but Clerk wins on UI component readiness and rapid day-one integration).
Grok Exceptional developer experience with pre-built, customizable React components, seamless Next.js/App Router integration, strong organizations/multi-tenancy for B2B SaaS, passkeys/MFA/social/SSO, and reliable session management; delivers high real-world velocity and polish for typical web/SaaS teams without heavy ops burden (assumes modern JS/TS stack).
GPT Best developer experience for modern web apps, with excellent framework SDKs, prebuilt UI, organizations, impersonation, passkeys, MFA, and fast implementation; near-tied with WorkOS for SaaS that prioritizes shipping speed over enterprise depth
Where it falls shortper GPT Pricing and proprietary user/session abstractions create meaningful cost and lock-in as usage and advanced requirements grow
per Claude JavaScript-ecosystem-centric and fully vendor-hosted — weak fit for non-JS backends, air-gapped/self-host requirements, or teams wary of per-MAU pricing growth at scale.
per Gemini High framework lock-in (heavily optimized for JS/TS frontends) and a pricing model that scales aggressively and becomes prohibitively expensive at high monthly active user volumes.
per Grok Can get expensive at high MAU scales or heavy enterprise SSO/SCIM needs; not ideal for non-React ecosystems or teams prioritizing full data ownership/self-hosting.
- 2GPT #3Claude #2Gemini —Grok #3
The most complete managed identity platform — every protocol (OIDC, SAML, WS-Fed), enormous integration catalog, Actions for custom logic, mature enterprise features (SSO, RBAC, anomaly detection) proven at massive scale; the safe choice when requirements are unknown or will grow.
+ model takes & fixes− hide details
Claude The most complete managed identity platform — every protocol (OIDC, SAML, WS-Fed), enormous integration catalog, Actions for custom logic, mature enterprise features (SSO, RBAC, anomaly detection) proven at massive scale; the safe choice when requirements are unknown or will grow.
GPT The broadest mature option: extensive protocol, identity-provider, security, extensibility, compliance, and deployment support handles unusual or complex authentication requirements better than most competitors
Grok Mature, battle-tested feature set covering complex flows, extensive SDKs/ecosystem, strong enterprise SSO/SAML, actions/rules for customization, and high reliability/scalability; delivers comprehensive real-world security and compliance without reinventing wheels for broad SaaS use.
Where it falls shortper GPT Configuration complexity and sharp pricing escalation make it poor value for straightforward startups and bootstrapped SaaS
per Claude Expensive with sharp pricing cliffs as MAUs and enterprise features stack up, and post-Okta-acquisition product velocity has slowed — startups often outgrow the free tier into painful bills.
per Grok Pricing scales with MAU and can feel heavy/expensive for simpler apps or cost-sensitive teams; steeper learning curve for advanced customizations.
- 3GPT #5Claude —Gemini #2Grok #2
Exceptional, open-source, and self-hostable identity provider that integrates natively with PostgreSQL row-level security, providing a generous free tier of 50,000 monthly active users.
+ model takes & fixes− hide details
Gemini Exceptional, open-source, and self-hostable identity provider that integrates natively with PostgreSQL row-level security, providing a generous free tier of 50,000 monthly active users.
Grok Outstanding value with generous free tier, tight Postgres/RLS integration for authorization, open-source self-hostable option, solid passwordless/MFA/social support, and low operational overhead; proven for rapid SaaS iteration and cost predictability for typical practitioners already in or open to Postgres ecosystem.
GPT Excellent value when paired with Supabase: open-source GoTrue, straightforward passwordless and social authentication, JWT integration, Row Level Security, and a credible self-hosting path
Where it falls shortper GPT Its native B2B organization, enterprise SSO, authorization, and polished account-management capabilities remain less complete than the leaders
per Gemini Heavily coupled to the Supabase and PostgreSQL ecosystem, introducing significant integration overhead if used as a standalone provider with other databases.
per Grok Less polished frontend components than dedicated UI-focused options; some session stability reports and less enterprise federation depth out-of-the-box.
- 4GPT #1Claude —Gemini —Grok —
Best overall for typical B2B SaaS: polished hosted or headless authentication, first-class organizations, passkeys, MFA, enterprise SSO, SCIM, RBAC, and an unusually generous core-auth free tier; assumes enterprise readiness matters
+ model takes & fixes− hide details
GPT Best overall for typical B2B SaaS: polished hosted or headless authentication, first-class organizations, passkeys, MFA, enterprise SSO, SCIM, RBAC, and an unusually generous core-auth free tier; assumes enterprise readiness matters
Where it falls shortper GPT Enterprise connections and adjacent features can become expensive, so it is not ideal for low-revenue, SSO-heavy products
- 5GPT #4Claude #4Gemini —Grok —
Strongest self-hosted choice for TypeScript applications, combining ownership and portability with sessions, social login, organizations, 2FA, passkeys, and extensible plugins without per-user fees
+ model takes & fixes− hide details
GPT Strongest self-hosted choice for TypeScript applications, combining ownership and portability with sessions, social login, organizations, 2FA, passkeys, and extensible plugins without per-user fees
Claude The strongest open-source option for the modern TypeScript stack — auth lives in your own database with no per-MAU fees, a rich plugin system (2FA, organizations, passkeys, SSO), and it became the de facto default for new TS projects by 2025–2026. Near-tie with Keycloak — Better Auth wins for TS teams, Keycloak for polyglot/enterprise self-hosting.
Where it falls shortper GPT You own availability, abuse prevention, upgrades, and security operations, and its TypeScript-first scope excludes teams wanting a fully managed language-neutral service
per Claude TypeScript-only and self-operated — you own security patching, token storage, and scaling, and it lacks the compliance attestations a managed provider hands you.
- 6GPT —Claude #5Gemini #3Grok —
The gold standard for fully featured, open-source, and self-hosted IAM, supporting OAuth2, OIDC, SAML, and user federation with zero vendor lock-in or license costs.
+ model takes & fixes− hide details
Gemini The gold standard for fully featured, open-source, and self-hosted IAM, supporting OAuth2, OIDC, SAML, and user federation with zero vendor lock-in or license costs.
Claude The battle-tested open-source IdP — full OIDC/SAML server, user federation (LDAP/AD), fine-grained authorization, CNCF-backed with Red Hat pedigree, free at any scale and deployable in regulated or air-gapped environments no SaaS provider can serve.
Where it falls shortper Claude Significant operational burden — a heavyweight Java service with a dated admin console and non-trivial upgrade/theming work; overkill for a small team that just needs login on one app.
per Gemini High operational complexity and steep learning curve, requiring dedicated engineering resources to configure, theme, and scale in production.
- 7GPT —Claude #3Gemini #5Grok —
The fastest path to enterprise readiness — SAML SSO, SCIM directory sync, and audit logs as clean APIs, plus AuthKit giving full user auth free up to 1M MAU, the best raw value in the category; assumes the app is B2B SaaS selling upmarket.
+ model takes & fixes− hide details
Claude The fastest path to enterprise readiness — SAML SSO, SCIM directory sync, and audit logs as clean APIs, plus AuthKit giving full user auth free up to 1M MAU, the best raw value in the category; assumes the app is B2B SaaS selling upmarket.
Gemini The premier choice for quickly overlaying enterprise features like SAML SSO and Directory Sync (SCIM) onto an existing simple auth setup to close upmarket deals.
Where it falls shortper Claude Enterprise-connection pricing (~$125/connection/month) adds up with many SMB customers, and it's purpose-built for B2B — not the pick for consumer apps needing deep social-login customization.
per Gemini Prohibitively expensive and structurally inefficient if used purely for basic B2C authentication without enterprise-level requirements.
- 8GPT —Claude —Gemini #4Grok —
A modern, developer-friendly B2B-native auth provider with excellent support for multi-tenancy and feature flags (near-tied with Clerk for modern startups, but Kinde wins on B2B multi-tenancy pricing and architecture).
+ model takes & fixes− hide details
Gemini A modern, developer-friendly B2B-native auth provider with excellent support for multi-tenancy and feature flags (near-tied with Clerk for modern startups, but Kinde wins on B2B multi-tenancy pricing and architecture).
Where it falls shortper Gemini A smaller library and SDK ecosystem compared to older competitors, requiring developers to write more boilerplate for non-mainstream frameworks.
- 9GPT —Claude —Gemini —Grok #4
Strong balance of self-hosted control (embedded or standalone) with developer-friendly SDKs, prebuilts, session security, and no per-MAU vendor lock-in; excels in ownership and predictable costs for practitioners wanting Auth0-like simplicity without full managed service dependency.
+ model takes & fixes− hide details
Grok Strong balance of self-hosted control (embedded or standalone) with developer-friendly SDKs, prebuilts, session security, and no per-MAU vendor lock-in; excels in ownership and predictable costs for practitioners wanting Auth0-like simplicity without full managed service dependency.
Where it falls shortper Grok Smaller ecosystem/community than giants; limited native SAML/enterprise federation compared to full IdPs.
- 10GPT —Claude —Gemini —Grok #5
Modern open-source (with cloud option) focused on multi-tenant SaaS with strong APIs, organizations, OIDC/SAML, audit/compliance features, and cloud-native ease; high merit for teams seeking self-hostable enterprise-grade without legacy bloat.
+ model takes & fixes− hide details
Grok Modern open-source (with cloud option) focused on multi-tenant SaaS with strong APIs, organizations, OIDC/SAML, audit/compliance features, and cloud-native ease; high merit for teams seeking self-hostable enterprise-grade without legacy bloat.
Where it falls shortper Grok Less mainstream adoption/DX polish than commercial leaders; requires more setup for simple consumer apps.
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 |
| Supabase Auth | #3 | — | #8 |
| WorkOS AuthKit | #4 | — | — |
| Better Auth | #5 | — | — |
| Keycloak | #6 | #6 | — |
| WorkOS | #7 | #1 | — |
Rank history
Just missed the top 5
GPT Keycloak — powerful and standards-rich, but operational and customization burden is excessive for the typical web or SaaS team · Firebase Authentication — easy and dependable for Firebase-centric apps, but ecosystem coupling and weaker B2B SaaS primitives limit its general value
Claude Supabase Auth — excellent and effectively free if you're already on Supabase, but it's a platform feature, not a standalone provider — weak outside that stack
Gemini Auth.js — Missed the top 5 because it is limited to JavaScript/TypeScript environments and requires developers to self-manage database adapters and session persistence · Auth0 — Missed the top 5 due to its notoriously complex developer experience and legacy pricing model that features steep cost cliffs for scaling startups
Grok WorkOS — strong enterprise B2B primitives like SCIM/SSO but narrower general auth focus, better as add-on
By model
ChatGPT
- 1.WorkOS AuthKit
- 2.Clerk
- 3.Auth0
- 4.Better Auth
- 5.Supabase Auth
Claude
- 1.Clerk
- 2.Auth0
- 3.WorkOS
- 4.Better Auth
- 5.Keycloak
Gemini
- 1.Clerk
- 2.Supabase Auth
- 3.Keycloak
- 4.Kinde
- 5.WorkOS
Grok
- 1.Clerk
- 2.Supabase Auth
- 3.Auth0
- 4.SuperTokens
- 5.ZITADEL
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, Supabase Auth. Ranked by asking ChatGPT, Claude, Gemini, Grok the same buying question and merging their top-5 picks, updated 2026-07-15. Source: modelsagree.com.
Which authentication provider for web apps did each AI model pick first?
ChatGPT: WorkOS AuthKit. Claude: Clerk. Gemini: Clerk. Grok: Clerk.
Do the AI models agree on the best authentication provider for web apps?
Not unanimous. ChatGPT picks WorkOS AuthKit.
What changed in the latest authentication provider for web apps ranking?
In the latest poll (2026-07-15): Keycloak climbed 2 spots; Kinde dropped 2 spots. 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 →
Cite this ranking
ModelsAgree, “Best authentication provider for web apps” — merged ranking from ChatGPT, Claude, Gemini & Grok, polled 2026-07-15. 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