Kotlin’s analogy to BehaviorSubject is currently knowns as ConflatedBroadcastChannel and it can be represented as flow using asFlow() extension function. However, we plan introduce a new class, tentatively to be named StateFlow, that is going to be specifically targeted to addressing this use-case and will directly implement Flow interfaces. See this discussion for details: https://github.com/Kotlin/kotlinx.coroutines/issues/1082