Comparison · Authentication
Clerk vs Supabase Auth: facts from official sources
A side-by-side of Clerk and Supabase Auth for user sign-up and login (authentication), built from facts on each vendor's own pages. They have too few model picks in October 2026 to compare yet.
Facts checked 2026-10-19Picks measured 2026-10-19Method
Model pick, not a product recommendation. The models answered without a repository, existing code or tools, so the index shows what a model names when nothing in the project constrains it. It says nothing about quality, security, price or market share.
Facts from official sources
Read on the vendors' own pages on 2026-10-19. Where we could not verify a fact there, the table says so instead of guessing. No prices are shown; check the pricing pages.
| Fact | Clerk | Supabase Auth |
|---|---|---|
| Vendor | Clerk | Supabase |
| What it is (vendor's description) | Hosted service providing user authentication, multi-tenancy and billing tooling for apps, with SDKs for several web frameworks. (source) | User management and authentication server, issuing JWTs and supporting email, password, magic link, phone and external provider sign-in. (source) |
| Type | hosted service | hosted service |
| Open source | Not stated on the pages we read | Yes, MIT (repository) (source) |
| Self-hosting | Not stated on the pages we read | Yes, per the vendor's docs |
| Free plan on the pricing page | Yes (source) | Yes (source) |
| EU region named in the vendor's docs | Not stated on the pages we read | Yes (source) |
| Official Next.js guide | Guide | Guide |
| Official SDK languages (as listed) | JavaScript, Go, Java, PHP, Python, C#, Ruby | JavaScript, Dart/Flutter, Swift, Python, C# |
| Documentation and pricing | Docs · Pricing | Docs · Pricing |
- Clerk: Free plan is named Hobby
- Clerk: SDK list includes frameworks (Next.js, React, Expo); languages are those on the SDK overview; Android/iOS also listed
- Supabase Auth: Supabase Auth is a component of Supabase; free plan and regions refer to the Supabase platform
- Supabase Auth: Free plan lists 50,000 MAU for Auth
- Supabase Auth: Self-hosting is community-supported per docs
What models picked
Not enough picks yet
What we do not measure
We do not measure price, quality, security, reliability, GDPR compliance or support. A model pick says what the models named, not which product is better for your project. For those questions use the vendors' own documentation: Clerk docs, Supabase Auth docs.
Sources
Pages the facts above were read on, checked 2026-10-19.