Pricing behavior — Authentication & Identity
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Pricing
Pricing for Firebase Authentication
How pricing changes as you scale: upgrade triggers, cost cliffs, and plan structure (not a live price list).
Sources linked — see verification below.
Freshness & verification
Pricing behavior (not a price list)
These points describe when users typically pay more and what usage patterns trigger upgrades.
Actions that trigger upgrades
- Need enterprise SSO for B2B deals (pushes toward Auth0/Entra)
- Need stronger governance and audit capabilities
- Need multi-tenant SaaS access controls and org structures
- Need to control phone auth costs and abuse at scale
- Need higher compliance guarantees for regulated customers
What gets expensive first
- B2B requirements can force a platform switch later
- Multi-tenant models need careful token/claims design
- Auth isn’t isolated: it impacts roles, billing, and support flows
- Abuse and fraud prevention are part of auth at scale
- Provider switching cost grows once deeply integrated
Plans and variants (structural only)
Grouped by type to show structure, not to rank or recommend SKUs.
Plans
- Core - Included - SDK-driven auth and providers (see docs)
- Scale - Usage-driven - Costs appear in supporting services and phone auth patterns
Enterprise
- Enterprise - Platform shift - SSO/provisioning often requires CIAM
Next step: constraints + what breaks first
Pricing tells you the cost cliffs; constraints tell you what forces a redesign.
Open the full decision brief →Sources & verification
Pricing and behavioral information comes from public documentation and structured research. When information is incomplete or volatile, we prefer to say so rather than guess.