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Clerk vs Firebase Auth vs Supabase Auth

Comparing three auth tools to help you choose the right one for your project in 2026.

Clerk logo

Clerk

Drop-in authentication with pre-built UI components optimized for React and Next.js

Pricing
Free (10K MAU) / Pro $25/mo
Type
Auth Provider
Tier
free
Firebase Auth logo

Firebase Auth

Google auth service with email phone social and anonymous sign-in methods

Pricing
Free (50K MAU) / Pay-as-you-go
Type
Auth Provider
Tier
free
Supabase Auth logo

Supabase Auth

PostgreSQL-native auth with row-level security and social/email/phone login

Pricing
Free (50K MAU) / Pro $25/mo
Type
Auth Provider
Tier
free

Side-by-side comparison

DimensionClerkFirebase AuthSupabase Auth
CategoryAuthAuthAuth
PlatformAuth ProviderAuth ProviderAuth Provider
PricingFree (10K MAU) / Pro $25/moFree (50K MAU) / Pay-as-you-goFree (50K MAU) / Pro $25/mo
Tierfreefreefree

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