by Auth0 (Okta)Authentication and user management
Customer identity from Okta with SOC 2 Type 2 and ISO 27001 audits, six hosting regions and a 25,000-user free plan.
Audited enterprise identity — SOC 2 Type 2, ISO 27001 and six hosting regions — with a free plan of 25,000 users and one enterprise connection.
Auth0 covers what enterprise and regulated customers ask an identity vendor for: annual SOC 2 Type 2 and ISO 27001/27017/27018 audits, a choice of six regions for where user data lives, and a HIPAA BAA, private deployment and a 99.99% SLA on Enterprise. Small apps can start on a free plan that already includes passkeys, brute-force protection and one enterprise connection.
Against 3 other products we reviewed in Authentication and user management: what you pay for with each, the five access facts, the plan limits we recorded and each review's bottom line. The note under the table says how each one was checked.
| Metric | Auth0 | Supabase Auth | Firebase Authentication | Clerk |
|---|---|---|---|---|
| What you're paying for | Compliance includedAudited enterprise identity — SOC 2 Type 2, ISO 27001 and six hosting regions — with a free plan of 25,000 users and one enterprise connection. | Worth the price100,000 monthly active users on the $25 Pro plan, SSO priced per user, and SOC 2, ISO 27001 and a HIPAA BAA on the self-serve Team plan. | Worth the priceSign-in that plugs into Firebase and Google Cloud, free to 50,000 monthly users, with SAML at $0.015 per user and a self-serve Google Cloud BAA. | Saves engineering timeReady-made sign-in and user management, free for 50,000 retained users, with SSO and MFA from $25 a month at published prices. |
| Overall score | 6.8 | 9.3Best | 8.4 | 8.2 |
| Free option | Free plan | Free plan | Free plan | Free plan |
| Card to start | No card needed | –Not measured | No card needed | No card needed |
| Getting access | Self-serve | Self-serve | Self-serve | Self-serve |
| Starter priceCheapest paid plan | $35/mo | $25/mo | $0.0055/MAU above 50,000 | $25/mo |
| Pricing model | Tiered | Usage-based | Usage-based | Usage-based |
| Pricing page | Public prices | Public prices | Public prices | Public prices |
| Free plan | 25,000 MAU, no card to sign up | 50,000 MAU; paused after 1 week inactive | 50,000 MAU; Spark capped at 3,000 a day | 50,000 MRU per app, no card |
| Entry paid plan at 10,000 users | $700/mo (B2C Essentials) | $25/mo (Pro), 100,000 MAU included | $0 (Blaze), 50,000 MAU at no cost | $25/mo (Pro), $20 billed annually |
| Enterprise SSO | 1 connection free; 3 on B2B Essentials, more from $100/mo each | 50 SSO users on Pro, then $0.015 each | 50 SAML/OIDC users free on Blaze, then $0.015 each | 1 connection on Pro, then $75/mo each |
| SOC 2 report | Type 2, from the Support Center | Type 2, on Team ($599/mo) | SOC 2 (Google), via Compliance Reports Manager | Type 2, on Business ($300/mo) |
| HIPAA BAA | With an Enterprise subscription | Team plan, paid add-on | Google Cloud BAA, accepted in the console | Enterprise plan |
| Data region | AU, CA, EU, JP, UK or US per tenant | 17 AWS regions, EU included | US only | US only |
| Log retention on the entry paid plan | 5 days (Essentials) | 7 days of auth audit logs (Pro) | 30 days in Cloud Logging (activity logs, opt-in) | 7 days of application logs (Pro) |
| Bottom line | From its public pages, Auth0 is the most complete compliance and data-region package of the three, with a generous free plan. Its paid plans cost more per user than the others, so price the B2C or B2B plan at your user count first. | From its public pages, Supabase Auth is the least expensive per user of the three and the only one with a BAA on a self-serve plan. It fits best when the rest of your app runs on Supabase. | From its public pages, Firebase Authentication is the least expensive route here to SAML SSO and a self-serve BAA, inside the Firebase platform. Check US-only processing and the protections it does not list. | From its public pages, Clerk offers the largest free allowance here and clear prices from the first user to SSO. Check US-only hosting and the plan that unlocks the SOC 2 report against your customers’ requirements. |
Evidence: Auth0: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Supabase Auth: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Firebase Authentication: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Clerk: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run. Prices in USD as listed, excluding tax. "–" means not recorded.
Review from public pages
Written from Auth0's public pages (pricing, security or privacy, and docs) as read on Oct 15, 2026. We did not sign up, and no hands-on run is published yet.
We read Auth0's pricing page and its compliance and tenant documentation on Oct 15, 2026; we did not sign up for this review. The pricing page asks two questions before it shows a price: B2C or B2B, and how many monthly active users. Prices then follow the user count, from $35 a month for 500 users on B2C Essentials to $2,100 at 30,000; beyond the steps shown, the page says to get in touch.
The free plan is broad: up to 25,000 users, passkeys, brute-force protection, one enterprise connection plus self-service SSO and SCIM, with no card needed to sign up (a card is verified only for a custom domain). Paid B2C plans drop enterprise connections; the footnote says to move to a B2B plan to keep them.
The compliance docs are specific: an annual SOC 2 Type 2 audit across all five Trust Services Criteria, annual ISO 27001/27017/27018 audits, CSA STAR, PCI-compliant deployment options and a BAA on request. The pricing page places the BAA with an Enterprise subscription.
SOC 2 Type 2, ISO 27001/27017/27018, CSA STAR and PCI-compliant deployment models are all described in the docs.
vs Clerk: Clerk holds SOC 2 Type 2 but not ISO 27001; Supabase holds SOC 2 Type 2 and ISO 27001.
Tenants can be created in Australia, Canada, Europe, Japan, the UK or the US, which sets where data is hosted.
vs Clerk: Clerk hosts data in the US only.
Free includes 1 enterprise connection, self-service SSO and SCIM for up to 25,000 users.
vs Clerk: Clerk and Supabase start SSO on their $25 Pro plans.
Both are listed as included from Free upwards.
B2C Essentials is $700/mo at 10,000 users and Professional $1,600; B2B Essentials is $2,100 at 10,000.
Paid B2C plans do not include enterprise connections; B2B Essentials includes 3 and more start at $100/mo each.
Breached password detection starts on Professional; bot detection is an Enterprise add-on.
Above the last step of the price selector the page says to get in touch.
Workaround: The FAQ says paid plans can be sized up to 100,000 users or more; sizes past the selector go through sales.
Auth0 prices by monthly active users in steps from 500 to 30,000, separately for B2C and B2B. B2C Essentials runs from $35 (500) to $700 (10,000) and $2,100 (30,000); B2C Professional from $240 to $1,600 at 10,000. B2B Essentials runs from $150 to $2,100 at 10,000, and B2B Professional from $800 to $2,400 at 10,000. The free plan covers up to 25,000 users.
Add-ons sit on top: enterprise SSO connections beyond those included start at $100 a month each, Enterprise MFA on B2B Essentials starts at $100 a month (SMS charged separately), and M2M tokens start at $28 a month. Bot detection, the HIPAA BAA and private deployment are Enterprise options.
The pricing FAQ says users can be exported with the User Import/Export extension in the dashboard, and that the Management API exposes all account data for export in any format.
From its public pages, Auth0 is the most complete compliance and data-region package of the three, with a generous free plan. Its paid plans cost more per user than the others, so price the B2C or B2B plan at your user count first.
| Limit | As recorded |
|---|---|
| Free plan | 25,000 MAU, no card to sign up |
| Entry paid plan at 10,000 users | $700/mo (B2C Essentials) |
| Enterprise SSO | 1 connection free; 3 on B2B Essentials, more from $100/mo each |
| SOC 2 report | Type 2, from the Support Center |
| HIPAA BAA | With an Enterprise subscription |
| Data region | AU, CA, EU, JP, UK or US per tenant |
| Log retention on the entry paid plan | 5 days (Essentials) |
Read from the vendor's public pages on Oct 15, 2026. No hands-on run is published yet. How we check
We have not published a sign-up run for Auth0 yet. The access facts above were read from its sign-up and pricing pages on Oct 15, 2026.
We have not published API calls for Auth0 yet.
Auth0 lists 6 plans. The cheapest paid plan, Essentials, costs $35/mo.
Prices as listed, USD, excluding tax; observed 2026-10-15.
Source: auth0.com pricing page. Prices change; the observed date above is when our agent read them.
We read the pricing, security and docs pages of three authentication services on the same day and scored them on the same six indicators. What each one sells, what 10,000 users and five SSO connections cost, and who should pick which.
