Category
Push Notification APIs pricing
Push notification APIs split into three camps: raw transport layers (Firebase Cloud Messaging, Amazon SNS, Expo) that deliver to APNs/FCM for free or near-free but leave orchestration to you; engagement/marketing platforms (OneSignal, Airship) built around audiences, segmentation and campaigns; and modern notification-infrastructure APIs (Knock, Courier) that treat push as one channel inside a workflow engine with in-app inboxes and preferences. Compare on documentation/DX, reliability and scale, breadth of official SDKs, and how fast a developer or AI agent can self-serve a working key, transport layers win on free/scale, infra APIs win on DX, and enterprise marketing suites trade self-serve access for depth.
| API | Billed by | Free tier | Verified |
|---|---|---|---|
 OneSignal Push Notification APIs | MAU-based ($0.012/MAU) | Free tier or trial | Jun 27, 2026 |
 Firebase Cloud Messaging Push Notification APIs | Free (transport) | Free tier or trial | Jun 27, 2026 |
 Amazon SNS Push Notification APIs | Per million ($0.50/M push) | Free tier or trial | Jun 27, 2026 |
 Knock Push Notification APIs | Per message (MAU/message tiers) | Free tier or trial | Jun 27, 2026 |
 Courier Push Notification APIs | Per notification (usage-based) | Free tier or trial | Jun 27, 2026 |
 Expo Push Push Notification APIs | Free (transport) | Free tier or trial | Jun 27, 2026 |
 Airship Push Notification APIs | Custom MAU contract | No free tier | Jun 27, 2026 |