Is Hexclave (Stack Auth) free for authentication?

Yes, Free costs nothing up to 10k MAU.

How much does Hexclave (Stack Auth) cost for authentication?

Free up to 10,000 users; Team is $49/month for up to 50,000 users and Growth $299/month for unlimited, with no per-user overage. At list prices: monthly active users 1k MAU: $0/month (Free); monthly active users 10k MAU: $0/month (Free); monthly active users 250k MAU: $299/month (Growth).

Hexclave (Stack Auth) pricing

How Hexclave (Stack Auth) charges, what to know before you commit, and what you'd pay at your usage — next to what the alternatives would cost for the same thing.

How it charges

Checked 2026-10-03 on www.hexclave.com ↗ · USD, list prices

In short

Free up to 10,000 users; Team is $49/month for up to 50,000 users and Growth $299/month for unlimited, with no per-user overage.

Free plan: Yes
Cheapest paid plan: $49/mo
Side project: $0/mo Free
Growing: $0/mo Free
Scaling: $299/mo Growth

What the model leaves out

Stack Auth is now Hexclave (stack-auth.com/pricing redirects there). Limits count every user account in the project, active or not — not MAU — so treat the caps as total users. No per-user overage; Growth has unlimited users. Extra dashboard admins are $29/mo each. Open source (server AGPLv3) and free to self-host, with hosting costs yours.

Before you commit

Limits count every user account in the project, active or not; delete accounts you no longer need.
Free includes 1 dashboard admin; paid plans include 4, then $29/month per extra admin.
The self-hosted server is AGPLv3; commercial licenses are available if that doesn't fit.