Auth Provider Cost Comparison

Clerk Pro (monthly): $25 + MRU overage (MRU = MAU × retained %, 50k included, then $0.02 / $0.018 / $0.015 / $0.012 tiers) + SSO ($75 each for connections 2–15, 1 included). WorkOS: AuthKit $0 up to 1M MAU then $2,500 per extra 1M + SSO $125 each for 1–15, $100 for 16–30, $80 for 31–50, $65 for 51–100. Supabase Pro: $25 includes 100k MAU then $0.00325/MAU — this is the whole project plan (database, storage, etc.), not auth-only. Supabase prices SAML SSO per MAU, not per connection (50 included, then $0.015 per SSO MAU), so it is added only when you enter SSO MAUs. Auth0 is not listed because its official page is a slider without a clean public list price. Worked example: 200k MAU, 60% retained, 10 SSO → Clerk ≈ $2,060, WorkOS ≈ $1,250, Supabase ≈ $25 + 100k × $0.00325 = $350 (no SSO surcharge).

Estimates only. Official list prices as of 2026-11-02 (Asia/Shanghai); the provider's pricing page prevails. Sources: Clerk pricing · WorkOS pricing · Supabase pricing

Clerk Cost Calculator · WorkOS Cost Calculator · Twilio Verify Cost Calculator · SMS API Cost Comparison (US) · Twilio SMS Cost Calculator (US)