Although Caspian itself is no longer a living language, it is the largest language family and therefore of great interest to scholars and theologians. It spread alongside both the Menite and Morrowan faiths before it changed and fragmented into distinct regional languages with some commonalities, such as a shared alphabet. Several languages descended from Caspian are still in common use, the most significant of which are described below.
Numerous intermediary Caspian languages have existed throughout the ages. Most of them are of interest only to linguists, but some are still spoken in certain regions, although rarely as a primary tongue.