The short answer
Knock is billed per message (mau/message tiers). It has a free tier: 10k messages/mo. The paid plans we list start at $250/month (Starter).
Plans and prices
| Plan | Price | What it covers |
|---|---|---|
| Developer | $0/month | 10,000 messages/month, 500 guide active users, 500 AI agent credits, unlimited workflows/broadcasts/channels/team members, batch & delay, multi-tenancy, Google SSO. |
| Starter | $250/month | 50,000 messages/month ($0.005 per additional), 2,500 guide active users, 2,000 AI agent credits; removes Knock branding; adds email client previews. |
| Enterprise | Contact sales | Volume-based/annual-commit pricing; per-customer branding & preferences, i18n, data-warehouse analytics, Datadog, SCIM, SAML 2.0 SSO, HIPAA/BAA, enterprise SLAs, shared Slack support. |
How Knock bills you
The pricing model is per message (mau/message tiers). Developer-first notification infrastructure with a polished workflow engine, React in-app inbox, and top-tier docs. Best suited to: notification infra + in-app inbox.
What to watch for on the bill
- Steep price jump from free to the $250/month Starter plan can be hard to justify for small workloads
- Key enterprise features (per-customer branding, i18n, SCIM, SAML, HIPAA/BAA, data-warehouse analytics) are locked behind Contact-sales Enterprise pricing
- Review base is still relatively small, so the 4.6 G2 rating rests on early-adopter feedback
- As managed infrastructure, it introduces a third-party dependency and per-message cost into the notification critical path
The pricing page we read
Source: https://knock.app/pricing. Prices change, so confirm there before you commit.
Compare Knock with alternatives
Other push notification apis: OneSignal, Firebase Cloud Messaging, Amazon SNS, Courier, Expo Push.
Looking at quality rather than price? See the Knock score on APIbenchmarks. Full entry: Knock pricing.