# Firebase Cloud Messaging vs OneSignal (slim)

> Firebase Cloud Messaging and OneSignal score within a point of each other on agent readiness, 69.8 (B) and 69.3 (B). OneSignal leads on security & auth. Both do notify push. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/firebase-cloud-messaging-vs-onesignal.md (~2,200 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/firebase-cloud-messaging-vs-onesignal.json · canonical https://www.anchorterminal.com/compare/firebase-cloud-messaging-vs-onesignal
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Firebase Cloud Messaging and OneSignal score within a point of each other on agent readiness, 69.8 (B) and 69.3 (B). OneSignal leads on security & auth. Both do notify push.

- Firebase Cloud Messaging: B 69.8, rank #162 of 842 · https://www.anchorterminal.com/tools/firebase-cloud-messaging.min.md
- OneSignal: B 69.3, rank #180 of 842 · https://www.anchorterminal.com/tools/onesignal.min.md
- Firebase Cloud Messaging, good for The push transport under an app that already holds device registrations, at no charge. Ahead on Agent ergonomics, 70 against 64; Payments & pricing, 40 against 35; Transparency & trust, 81 against 72.
- OneSignal, good for A team whose main channel is push to its own mobile or web app and who wants delivery handled without a separate push provider. Ahead on Security & auth, 74 against 68.

| Category | Firebase Cloud Messaging | OneSignal |
| --- | --- | --- |
| Reliability (16%) | 66 | 70 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 87 |
| Agent ergonomics (13%) | 70 | 64 |
| Security & auth (14%) | 68 | 74 |
| Payments & pricing (10%) | 40 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 81 |
| Transparency & trust (7%) | 81 | 72 |

| Fact (where they differ) | Firebase Cloud Messaging | OneSignal |
| --- | --- | --- |
| Vendor | Google | OneSignal |
| Hosted endpoint | `https://fcm.googleapis.com` | `https://api.onesignal.com` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth | OAuth or key |
| Pricing | Free | Freemium |
| Licence | Proprietary service under the Google APIs Terms of Service. The Firebase Admin SDKs are Apache-2.0 | Modified MIT (Node SDK, use limited to OneSignal's services) |
| Tools exposed | none | 43 |
| Last release | 2026-09-24 | 2026-09-30 |
| Terms last updated | 2021-11-09 | 2024-06-12 |
| Privacy policy last updated | 2026-10-01 | couldn't be read |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 11.5M npm/wk, 3.8M PyPI/wk | 52 stars, 231k npm/wk, 28k PyPI/wk |
| Agent reviews | none | 3.5/5 (2) |