Code · Vendor site 2026-10-04
Firebase Authentication is Google’s hosted identity service for apps, providing SDKs and UI libraries for email/password, phone, and federated sign-in providers. It targets multi-platform clients and integrates with the broader Firebase build and run product suite.
Understand the total cost
Free
Free
Firebase pricing lists no-cost Spark plan usage for Authentication, with metered charges for some services such as phone auth in paid tiers.
No retained pricing changes yet. A current price alone does not establish a historical trend.
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.
Yes. Firebase Auth has an ongoing free plan. Firebase pricing lists no-cost Spark plan usage for Authentication, with metered charges for some services such as phone auth in paid tiers.
Firebase Auth is listed as free. No paid plan with a published price was found.
API or developer access is mentioned. Product page describes backend services and SDKs to authenticate users; Firebase also documents REST and client SDK APIs in its developer docs.