We at ottex.ai use bunny.net to deploy globally an openrouter like speach-to-text API (5 continents, 26 locations, idle cost 3$).

Highly recommend their Edge Containers product, super simple and has nice primitives to deploy globally for a low latency workloads.

We connect all containers to one redis pubsub server to push important events like user billing overages, top-ups etc. Super simple, very fast, one config to manage all locations.