His high official, or rabi simmiltim, was named Peruwa.
Anitta reigned in the 17th century BC (short chronology) and is the author of the Anitta text (CTH 1.A, edited in StBoT 18, 1974), the oldest known text in the Hittite language (and the oldest known Indo-European text altogether). This text seems to represent a cuneiform record of Anitta's inscriptions at Kanesh, perhaps compiled by Hattusili I, one of the earliest Hittite kings of Hattusa.
The Anitta text indicates that Anitta's father conquered Neša (Kanesh, Kültepe), which became an important city within the kingdom of Kussara. During his own reign, Anitta defeated Huzziya, the last recorded king of Zalpuwa, and the Hattic king Piyusti and then conquered his capital at the site of the future Hittite capital of Hattusa. He then destroyed the city, sowed cress over it, and laid a curse on the site.
Anitta's name appears on an inscription on a dagger found in Kültepe and also, together with the name of his father, on various Kültepe texts, as well as in later Hittite tradition.