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Auth0

Sign-in and user management, free for up to 25,000 monthly active users.

Priced from vendor pages
Prices checked
20 Oct 2026
Sources
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What it is

Auth0 handles sign-up, log-in, social logins and organisations for your app. The free plan covers up to 25,000 monthly active users, with unlimited social connections and one custom domain. Paid plans add stronger multi-factor sign-in and role-based access per organisation.

Good for

  • Apps that need social logins and a large free allowance
  • B2B apps that need organisations (5 on Free, 10 on B2C Essentials, unlimited on B2B Essentials from $150/mo)

Watch out for

  • $35 a month for 500 users (B2C; B2B from $150). Published tiers go up to 50,000 users; above that, contact sales
  • Pro multi-factor sign-in isn't on the free plan
  • A custom domain needs card verification

In comparisons

Clerk vs Supabase Auth vs Auth0 for sign-in

Free (25,000 monthly active users) or B2C Essentials from $35/mo (up to 500 monthly active users); B2B Essentials from $150/mo

  • A free plan for up to 25,000 monthly active users, with unlimited social logins and one custom domain.

Prices are published in tiers up to 50,000 users (B2C Essentials: $70 at 1,000, $700 at 10,000, $3,500 at 50,000 a month); above that you contact sales. Usage between tiers is billed at the next tier up. Pro multi-factor sign-in needs a paid plan, and a custom domain needs card verification.

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