Knock vs Pusher
Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API
vs. Realtime pub/sub WebSocket Channels + programmatic push (Beams)
Pricing tiers
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
Pusher
Beams: Sandbox
Free. 1K subscribers.
$0 base (usage-based)
Channels: Sandbox
Free. 100 concurrent conns, 200K msg/day.
$0 base (usage-based)
Beams: Startup
$29/mo. 10K subscribers.
$29/mo
Channels: Startup
$49/mo. 500 concurrent conns, 1M msg/day.
$49/mo
Channels: Pro
$99/mo. 2K concurrent conns, 4M msg/day.
$99/mo
Beams: Pro
$99/mo. 50K subscribers.
$99/mo
Beams: Business
$199/mo. 115K subscribers.
$199/mo
Channels: Business
$299/mo. 5K concurrent, 10M msg/day.
$299/mo
Beams: Premium
$399/mo. 250K subscribers.
$399/mo
Channels: Premium
$499/mo. 10K concurrent, 20M msg/day.
$499/mo
Channels: Growth
$699/mo. 15K concurrent, 40M msg/day.
$699/mo
Channels: Plus
$899/mo. 20K concurrent, 60M msg/day.
$899/mo
Channels: Growth Plus
$1,199/mo. 30K concurrent, 90M msg/day.
$1199/mo
Channels: Enterprise
Custom. 10M+ concurrent, 100B+ msg/day. SLA, dedicated support.
Custom
Free-tier quotas head-to-head
Comparing starter on Knock vs be-sandbox on Pusher.
| Metric | Knock | Pusher |
|---|---|---|
| guide users | 2500 users | — |
| guide users overage | $0.05/user USD/user | — |
| messages monthly | 50000 messages/mo | — |
| messages overage | $0.005/message USD/message | — |
| subscribers | — | 1000 subscribers |
Features
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).
Pusher · 11 features
- Beams — Push notifications for iOS/Android/Web with device interest groups.
- Beams Authenticated Users — Target users by auth user ID across devices.
- Channels — WebSocket pub/sub — realtime events, live updates, notifications.
- Channels Webhooks — Receive server-side notifications of channel activity.
- Client Events — Publish events from clients directly (triggered from browser).
- Debug Console — Live channel debugging dashboard.
- Encrypted Channels — End-to-end encrypted messages.
- Global Clusters — US, EU, AP-Southeast, etc. Pick nearest region.
- Presence Channels — Track who is online in a channel.
- Private Channels — Auth-required channels with server-signed tokens.
- Stats — Connection / message dashboards.
Developer interfaces
| Kind | Knock | Pusher |
|---|---|---|
| CLI | Knock CLI | — |
| SDK | knockapi (Python), knockapi (Ruby), knock-elixir, knock-go, knock-java, @knocklabs/node, @knocklabs/react | Pusher Beams Android, Pusher Beams iOS, Pusher Beams Web SDK, pusher-http-go, pusher-http-java, pusher-http-php, pusher-js (client), pusher (Node), pusher (Python), pusher (Ruby), PusherSwift, pusher-websocket-java (Android) |
| REST | Knock REST API | Beams Publish API, Pusher HTTP API |
| MCP | Knock MCP Server | — |
| OTHER | Outbound Webhooks | Channels Webhooks, Pusher WebSocket |
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