AxBalancerCostContext

type AxBalancerCostContext<TModelKey> = Readonly<{
  expectedTokens:   | AxBalancerExpectedTokens
     | undefined;
  logicalModel: string;
  resolvedModel: string;
  routeKey: string;
  service: AxAIService<unknown, unknown, TModelKey>;
  serviceIndex: number;
}>;