on fireworks, log in and go to the dashboard, then the subscription is available under "fire pass" (above the model library). the underlying compute is fireworks and is ZDR.

other cloud providers, kind of depends on the use case. fireworks. inception labs is frontier for the use case. otherwise a lot of the time I use TEE. tinfoil is very good, easy to integrate using their cli proxy, fairly expensive. phala is less expensive but slow, more work to integrate.