android - 2025 | Firebase Phone Authentication Limit - Stack Overflow

Can you tell me if the Firebase Phone Authentication still has 10k free for spark plan or what is the new pricing? It is not clear from there pricing documentations and ChatGPT/Gemini are giving ambiguous info.

Can you tell me if the Firebase Phone Authentication still has 10k free for spark plan or what is the new pricing? It is not clear from there pricing documentations and ChatGPT/Gemini are giving ambiguous info.

• android
• firebase-authentication

Share Improve this question Follow edited Jan 16 at 16:09 Frank van Puffelen 601k8585 gold badges890890 silver badges860860 bronze badges asked Jan 16 at 11:57 Ankit GuptaAnkit Gupta 54422 gold badges66 silver badges2121 bronze badges 1

• 1 Please contact their support. They are the only ones who can give reliable answers to these kind of questions. It's off-topic on Stack Overflow. – tyg Commented Jan 16 at 13:01

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From the Firebase pricing page:

So on the free Spark plan Firebase Authentication supports up to 50,000 monthly active users.

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For completeness, here is the table for the pay-as-you-go Blaze plan:

So on the pay-as-you-go Blaze plan, you also don't pay for the first 50,000 monthly active users.

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The above is a snapshot that is accurate at the time of posting, but may get outdated. So always check the Firebase pricing page for the current pricing info.

Based on the Firebase pricing page, Firebase Phone Auth is not supported or not available in Spark plan anymore.

You may need to link a Cloud Billing account to enable this feature and use the SMS service starting September 2024. See this FAQ entry for more information.

Here is an additional documentation about Phone number sign-in limits.