Which is the most effective antipsyotic for hearing voices ?

Since there are numerous antipsychotics, your psychiatrist could choose the most appropriate for your age, health, and symptoms.

According to CATIE trial, many second generation antipsychotics were found similarly effective in hearing voices. But medications are chosen customized to a person's symptoms, their tolerability, person's age, side effect profile and so on. There is not one medication superior to the other as a blanket statement.