Clerk vs Supabase Auth
Answer: As of 2026-10-30: Clerk wins 1k users · no SSO at $0/mo ($0/yr less than Supabase Auth); Clerk wins 10k users · 1 SSO at $25/mo ($27/yr less than Supabase Auth); Supabase Auth wins 50k users · 5 SSO at $39.25/mo ($3,429/yr less than Clerk); Supabase Auth wins 100k users · 10 SSO at $54.25/mo ($19,749/yr less than Clerk).
Cost by MAU (no SSO)
| Monthly users | Clerk | Supabase Auth |
|---|---|---|
| 10k users | $0 Hobby | $0 Free (platform) |
| 50k users | $0 Hobby | $0 Free (platform) |
| 100k users | $1025 Pro | $25 Pro (platform) |
With enterprise SSO
| Scenario | Clerk | Supabase Auth |
|---|---|---|
| 1k users · no SSO | $0 Hobby | $0 Free (platform) |
| 10k users · 1 SSO | $25 Pro | $27.25 Pro (platform) |
| 50k users · 5 SSO | $325 Pro | $39.25 Pro (platform) |
| 100k users · 10 SSO | $1700 Pro | $54.25 Pro (platform) |
Cheapest verified plan per vendor, monthly USD list price. How we calculate this.
Clerk
Hobby free to 50k MRU/app. Pro $25/mo ($20 annual) with 50k MRU + 1 SSO + 1 Directory Sync. Extra SSO $75 (2–15) then $60 (16–100). Directory Sync billed from 2027-01-01.
Source: clerk.com/pricing · 2026-10-30
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
Also see: Clerk alternatives · Supabase Auth alternatives · all vendors by MAU
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