When you move beyond a hobby project the first thing you notice is the jump from a $0 free tier to a $25 entry point for serious production. Clerk’s Pro plan lands at $25 while Supabase’s comparable Pro tier is listed as $25/month. The similarity ends there – Clerk adds a Business tier at $300, whereas Supabase jumps to a Team tier at $599/month and then stacks on optional add‑ons like compute ($10/month), point‑in‑time recovery ($100/month) and database size ($0.12 per unit).
What you pay for
| Plan | Clerk | Supabase |
|---|---|---|
| Free | $0 – up to 50,000 monthly active users | $0/month – perfect for passion projects & simple websites |
| Mid‑tier | $25 – for production apps that need more | $25/month – for production applications with the power to scale |
| Upper tier | $300 – tackles compliance and growing teams | $599/month – adds SSO, backup control, industry certifications |
| Add‑ons (Supabase only) | — | $10/month compute, $100/month point‑in‑time recovery, $0.12 per database size |
Clerk’s pricing stays flat once you step up: the Business tier is a single $300 line item that promises compliance tools and team‑focused features. Supabase, by contrast, separates core team functionality ($599/month) from a menu of optional services, meaning the final bill can balloon if you need advanced backups or extra compute. Both vendors keep the free tier truly free, but the ceiling of what you get without paying differs – Clerk caps at 50,000 MAUs, while Supabase’s free plan is limited only by the implicit resource constraints of a hobby‑grade database.
Fit for different teams
If your startup is just getting its first paying customers and you need a simple auth layer, Clerk’s Pro plan gives you production‑ready features for $25 and leaves compliance concerns for later. Supabase’s Pro tier costs the same but also grants you the full Supabase stack, which can be attractive if you plan to host your own database alongside authentication. For growing companies that must meet GDPR, SOC‑2, or other regulatory standards, Clerk’s Business tier at $300 bundles those guarantees without extra line items. Supabase requires you to purchase the Team tier at $599/month and then tack on the specific compliance‑related add‑ons you need, which can be more flexible but also more expensive if you need several of them.
In short, choose Clerk if you prefer a predictable, all‑in‑one price for compliance and team features. Opt for Supabase if you already rely on its broader backend services and are comfortable assembling a custom set of add‑ons. Pricing verified on 2026-09-15.