[aeneas_ory]

Don‘t get locked in by those SaaS-only vendors. Modern stacks self-host because SaaS has a tendency to extort you once they need to show growth and are unable to acquire new customers fast enough.

Your best bet then is Ory https://github.com/ory / https://www.ory.com because it has an OSS version, enterprise version for self hosters, and a SaaS! And the source code is visible to everyone unlike other vendors :) Plus all the big names like OpenAI or Mistral use Ory as well.