Scalekit alternatives, ranked by what you’d actually pay
Answer: As of 2026-11-07: at 10k users Scalekit Free costs $0/mo and 0 of 12 priceable alternatives are cheaper; at 50k users Scalekit Growth costs $99/mo and 6 of 11 priceable alternatives are cheaper (cheapest: Clerk Hobby at $0/mo, $1,188/yr less); at 100k users Scalekit Growth costs $99/mo and 4 of 10 priceable alternatives are cheaper (cheapest: WorkOS AuthKit at $0/mo, $1,188/yr less).
| Vendor (cheapest verified plan) | 10k users | 50k users | 100k users | 50k + 5 SSO | Head to head |
|---|---|---|---|---|---|
| Scalekit (current) | $0 Free | $99 Growth | $99 Growth | $339 Growth | |
| Clerk | $0 Hobby | $0 Hobby | $1,025 Pro | $425 Pro | Scalekit vs Clerk |
| WorkOS | $0 AuthKit | $0 AuthKit | $0 AuthKit | $625 AuthKit | Scalekit vs WorkOS |
| Logto | $0 Free | $0 Free | $24* Pro | $312* Pro | Scalekit vs Logto |
| Supabase Auth | $0 Free (platform) | $0 Free (platform) | $25 Pro (platform) | $39.25 Pro (platform) | Scalekit vs Supabase Auth |
| Firebase Auth / Identity Platform | $0 Pay as you go | $0 Pay as you go | $275 Pay as you go | $14.25 Pay as you go | Scalekit vs Firebase Auth / Identity Platform |
| SSOJet | $0 Free | $0 Free | $0 Free | $360 Business | Scalekit vs SSOJet |
| Amazon Cognito | $0 Lite | $220 Lite | $495.00 Lite | $234.25 Lite | Scalekit vs Amazon Cognito |
| Authagonal | $149 Scale | $339 Enterprise | $339 Enterprise | $339 Enterprise | Scalekit vs Authagonal |
| Kinde | $0 Free | $716.25 Pro | $1533.85 Plus | $718.85 Plus | Scalekit vs Kinde |
| Descope | $249 Pro | $2,049 Growth | $4,549 Growth | $2,049 Growth | Scalekit vs Descope |
| Auth0 | $0 Free | $3,500 Essentials (B2C) | — | — | Scalekit vs Auth0 |
| Stytch | $0 Pay as you go (B2B) | — | — | — | Scalekit vs Stytch |
Monthly USD list prices, cheapest verified plan per vendor for each scenario, sorted by 50k-user cost. “—” = no fixed published price for that volume (custom / contact sales, or overage not printed). Billing units differ: Clerk counts retained users (MRU), most others MAU. “50k + 5 SSO”: SSO users: Amazon Cognito, Supabase Auth and Firebase Auth / Identity Platform bill SAML/OIDC per SSO user, not per connection (first 50 free, then $0.015 per SSO user a month). Their SSO results here assume 200 SSO users per connection (5 connections = 1,000 SSO users). See how 1,000 or 2,000 per connection changes the result or set your own. B2B: every SSO result assumes 1 customer organization per SSO connection (members = its SSO users, 200 by default). Published org caps and fees are applied, e.g. Clerk’s $100/mo B2B Authentication add-on above 20 members or 100 orgs, Auth0 Free’s 5-org cap, Descope $1/tenant over 35; plans over a cap are left out. All org terms · set your org count. * Logto Pro bills access tokens, not MAU (50k tokens included, then $0.08 per 100) — the figure is base fee only; token overage depends on your usage. How we calculate this.
Why teams leave Scalekit
Free $0: 25k MAU, 25 orgs, 1 SSO + 1 SCIM (hard caps). Growth $99/mo: 100k MAU then $0.05, 100 orgs then $1; SSO and SCIM each 1 free then $60 (2–15), $45 (16–30), $35 (31–50), $30 (51–100).
Source: www.scalekit.com/pricing/auth-for-saas · 2026-11-07
Check before you switch
Unit (MAU + connection), SSO per-connection fees, and MFA availability change the ranking more than the headline price. Run your exact numbers in the calculator and read MAU vs MRU.
Or skip the vendor: self-host Better Auth / Auth.js
$0 per user, but you pay in database, email, SMS and engineer hours. See what self-hosting costs instead of Scalekit, with the break-even math at 10k/50k/100k users.
Hear when Scalekit or its alternatives change prices
Weekly: every auth price change we confirmed, SSO fee moves, and the cheapest verified plan for 10k and 50k users. Free; unsubscribe in one click. Sent via Kit · Privacy.