# Tag Info

The only general situation that comes to my mind where BFS could be preferred over A* is when your graph is unweighted and the heuristic function is $h(n) = 0, \forall n \in V$. However, in that case, A* (which is equivalent to UCS) behaves like BFS (except for the goal test: see section 3.4.2 of this book), i.e. it will first expand nodes at level $l$, then ...