Which is the correct grammar you talk to whomever was inside or whoever inside?

Here's why:

* Whoever is used as the subject of a verb. In this case, "whoever" is the subject of the verb "was."

* Whomever is used as the object of a verb or preposition. It would be correct if you were saying something like: "You talk to whomever they tell you to."

The complete sentence: You talk to whoever was inside.