What language does Zeus speak?

Zeus, being a figure from Greek mythology, did not speak any real-world language. He was a god, and in stories, gods were often understood by mortals without needing a specific language.

However, if we consider the context of Greek mythology, we can say that Zeus spoke Ancient Greek. This is the language in which the myths were originally recorded and disseminated, and it is the language that would have been used by the people who believed in Zeus and the other Greek gods.