It is published by Les Belles Lettres, and is sponsored by the Association Guillaume Budé.
Each title of the series includes an introduction, notes and a critical apparatus, as well as a facing-page French translation, comparable to the Loeb Classical Library in the English-speaking world, but with considerably more detailed introductions, apparatus, and critical or explanatory annotations.
The Greek authors in the series can be recognized by a yellow cover on which Athena's little owl can be seen, the Latin ones by a red one where one finds a she-wolf reminiscent of the Capitoline Wolf.
A new series, called "Classiques en poche" and aimed at students, has been added: it reproduces the text and translation of the standard editions, but without the critical apparatus.
Soon afterwards appeared the first Latin work of the series, namely Lucretius' De rerum natura, edited by Alfred Ernout.