It has all of the same features as the Cloud version, including unlimited Enterprise Connections (SAML and OIDC) for free.
The only features that required a paid-Edition are: Connectors (connecting to LDAP and other backends), Advanced Registration Forms, and Breached Password Detection.
We are adding additional paid features as well, but our Developer Edition is reasonably priced. $125/month to start and that gets you up to 10,000 MAU. You can also test drive Developer Edition free for 14-days.