The service tier to use for processing this request. fast is accepted as an alias for priority. ultrafast prefers ultrafast endpoints and falls back to priority, then default endpoints.
import ( "github.com/OpenRouterTeam/go-sdk/models/components")value := components.ResponsesRequestServiceTierAuto// Open enum: custom values can be created with a direct type castcustom := components.ResponsesRequestServiceTier("custom_value")