Auth0 vs Knock

Customer identity platform from Okta
vs. Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API

Auth0 website ↗Knock website ↗

Pricing tiers

Auth0

B2C Essentials

Starting at 500 MAUs. Pro MFA, RBAC, passwordless, SAML, 10 orgs.

$35/mo

B2B Essentials

Unlimited orgs, 3 SSO connections, RBAC.

$150/mo

B2C Professional

Starting at 500 MAUs. Includes attack protection, custom DB, enterprise MFA.

$240/mo

B2B Professional

5+ SSO connections, attack protection, custom DB.

$800/mo

Enterprise

Custom. 99.99% SLA, dedicated support.

Custom

Auth0 website ↗

Knock

Developer

Free forever. 10K messages, 500 guide users, 500 AI credits/month.

$0 base (usage-based)

Starter

$250/mo. 50K messages, 2.5K guide users, 2K AI credits. Remove branding.

$250/mo

Enterprise

Custom pricing. White-label, i18n, data warehouse, Datadog, SCIM, SAML, HIPAA/BAA.

Custom

Knock website ↗

Free-tier quotas head-to-head

Comparing b2c-essentials on Auth0 vs starter on Knock.

Metric	Auth0	Knock
guide users	—	2500 users
guide users overage	—	$0.05/user USD/user
mau start	500 MAU	—
messages monthly	—	50000 messages/mo
messages overage	—	$0.005/message USD/message
sso connections	0 conns	—

Features

Auth0 · 14 features

Attack Protection — Bot detection, brute-force protection, breached-password detection, suspicious I…
Auth0 Actions — Node.js + TS hooks that run during auth flows (login, post-login, signup, MFA). …
Auth0 FGA (OpenFGA) — Fine-grained relationship-based authorization (ReBAC). Based on Google Zanzibar.
Custom Database — BYO user DB: scripts in Actions read from your database and create Auth0 users o…
Custom Domain — Serve auth at auth.yourbrand.com with managed cert.
Enterprise SSO — SAML 2.0 + OIDC + AD/LDAP enterprise connections. Per-tenant or per-org.
Log Streaming — Stream tenant logs to Datadog, Splunk, Sumo Logic, Azure Sentinel, HTTP, Mixpane…
Machine-to-Machine — Client-credentials grant for backend services.
Multi-Factor Auth — SMS, Voice, Email, TOTP, WebAuthn (biometrics), Push (Guardian app), Duo.
Organizations — Multi-tenant B2B: orgs with invitations, roles, branding, enterprise connections…
Passkeys — FIDO2/WebAuthn passkey sign-in.
Passwordless — Email magic link + code, SMS code, WebAuthn.
RBAC — Roles, permissions, API scopes — attach to users or orgs.
Universal Login — Hosted login page with customization, multi-factor flows, passwordless, social, …

Knock · 13 features

AI Agents — Autonomous notification drafting & workflow generation.
Batch + Digest — Group notifications into digests on schedule or window.
Chat — Slack, Microsoft Teams, Discord.
Email — Send via SendGrid/Postmark/Resend/Mailgun/AWS SES as relays.
Guides — In-product messaging, announcements, modals, banners.
i18n / Localization — Translate templates by user locale.
In-App Feed — Notification inbox with React/Vue/iOS/Android drop-in components.
Multi-tenancy — Per-tenant branding, preferences, quiet hours.
Outbound Webhooks — Subscribe to delivery events.
Preferences — User + tenant preference center with granular controls.
Push — iOS (APNs), Android (FCM), Expo, Web Push.
SMS — Twilio, MessageBird, Telnyx, Vonage as providers.
Workflows — Visual notification orchestration (branch, batch, delay, throttle).

Developer interfaces

Kind	Auth0	Knock
CLI	Auth0 CLI	Knock CLI
SDK	Auth0 Android, Auth0 iOS/Swift, @auth0/nextjs-auth0, Auth0 React SDK, Auth0 SPA.js SDK, Go Auth0 SDK, Node Auth0 Backend SDK, Python Auth0 SDK	knockapi (Python), knockapi (Ruby), knock-elixir, knock-go, knock-java, @knocklabs/node, @knocklabs/react
REST	Authentication API, Management API	Knock REST API
MCP	—	Knock MCP Server
OTHER	—	Outbound Webhooks

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