The Guptas made Sanskrit the official language and all their epigraphic
  records were written in it.
  Smritis The period saw the last phase of the Smriti literature.
  Ithihasas The Mahabharata and the Ramayana also got their final
  touch-up and received their present shape during this age.
  Puranas The-Puranas also as we know them in their present form were
  composed during this time. They are the historical traditions as recorded
  by the Brahmins. They were originally composed by bards, but now,
  having come into priestly hands, they were rewritten in classical Sanskrit,
  and information on Hindu sects, rites and customs was added in order to
  make them into sacrosanct Hindu documents. The succession of dynasties
  was recorded in the form of prophecy. Thus, what began as popular
  memories of the past was revised and rewritten in prophetic form and
  became the Brahmanical interpretation of the past.
Buddhist Literature The earliest Buddhist worksare in Pali, but in the later
phase Sanskrit came to be used to a greater extent and most of the works are
in prose with verse passages in mixed Sanskrit. Arya Deva and Arya Asanga
of the Gupta period are the most notable writers. The first regular Buddhist
work on logic was written by Vasubandhu. Vasubandhu’s disciple, Dignaga,
was also the author of many learned works.
Jaina Literature The Jaina canonical literature at first grew up in Prakrit
dialects. Sanskrit came to be the medium later. Within a short time, Jainism
produced many great scholars and by their efforts the Hindu Ithihasas and
Puranas were recast in Jaina versions to popularise their doctrines. Vimala
produced a Jaina version of the Ramayana. Siddhasena Divakara laid the
foundation of logic among the Jainas.
Secular Literature Samudragupta himself had established his fame as
kaviraja. The most notable poet of his court was Harisena. It is widely
believed that his court was adorned by the celebrated navaratnas—Kalidasa,
Amarasimha, Visakhadatta and Dhanavantri. Kalidasa is a poet of love,
nature and beauty. The works of Sudraka (Mriehehhakatika), Visakhadatta
(Mudraraksasa and Deviehandraguptam)            and other less known dramatists