Supabase Auth alternatives, ranked by what you’d actually pay
Answer: As of 2026-10-30: at 10k users Supabase Auth Free (platform) costs $0/mo and 0 of 7 priceable alternatives are cheaper; at 50k users Supabase Auth Free (platform) costs $0/mo and 0 of 5 priceable alternatives are cheaper; at 100k users Supabase Auth Pro (platform) costs $25/mo and 2 of 5 priceable alternatives are cheaper (cheapest: WorkOS AuthKit at $0/mo, $300/yr less).
| Vendor (cheapest verified plan) | 10k users | 50k users | 100k users | 50k + 5 SSO | Head to head |
|---|---|---|---|---|---|
| Supabase Auth (current) | $0 Free (platform) | $0 Free (platform) | $25 Pro (platform) | $39.25 Pro (platform) | |
| Clerk | $0 Hobby | $0 Hobby | $1025 Pro | $325 Pro | Supabase Auth vs Clerk |
| WorkOS | $0 AuthKit | $0 AuthKit | $0 AuthKit | $625 AuthKit | Supabase Auth vs WorkOS |
| Logto | $0 Free | $0 Free | $24* Pro | $264* Pro | Supabase Auth vs Logto |
| Amazon Cognito | $0 Lite | $220 Lite | $495.00 Lite | $234.25 Lite | Supabase Auth vs Amazon Cognito |
| Kinde | $0 Free | $716.25 Pro | $1533.85 Plus | $718.85 Plus | Supabase Auth vs Kinde |
| Auth0 | $0 Free | — | — | — | Supabase Auth vs Auth0 |
| Stytch | $0 Pay as you go (B2B) | — | — | — | Supabase Auth vs Stytch |
Monthly USD list prices, cheapest verified plan per vendor for each scenario, sorted by 50k-user cost. “—” = no fixed published price for that volume (custom / contact sales, or overage not printed). Billing units differ: Clerk counts retained users (MRU), most others MAU. * Logto Pro bills access tokens, not MAU (50k tokens included, then $0.08 per 100) — the figure is base fee only; token overage depends on your usage. How we calculate this.
Why teams leave Supabase Auth
Free: 50k MAU. Pro from $25/mo: 100k MAU then $0.00325/MAU. SAML SSO: 50 included then $0.015/MAU. Auth-only cost is entangled with the platform plan.
Source: supabase.com/pricing · 2026-10-30
Check before you switch
Unit (MAU), SSO per-connection fees, and MFA availability change the ranking more than the headline price. Run your exact numbers in the calculator and read MAU vs MRU.
Hear when Supabase Auth or its alternatives change prices
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