At eighteen he won the Prix de Rome, and at thirty exhibited his Pluton tenant Cerbère enchaîné (now in the Louvre). His portrait busts of Buffon and of Madame du Barry (1773), and his statuette of Bossuet (all in the Louvre), are amongst his best works.
When Bernard Poyet constructed the "Fontaine des Innocents" from the earlier edifice of Pierre Lescot, Pajou provided a number of new figures for the work. Mention should also be made of his bust of Carlin Bertinazzi (1763) at the Comédie Française, and the monument to Marie Leszczyńska, Queen of France (in the Salon of 1769). Pajou died in Paris on the 8th of May 1809.
The Courtauld Institute of Art (London), the Frick Collection (New York City), Harvard University Art Museums (Cambridge, Massachusetts), the Hermitage Museum (Saint Petersburg, Russia), the Honolulu Academy of Arts, the J. Paul Getty Museum (Los Angeles, California), the Louvre, the Metropolitan Museum of Art (New York City), the Museum of Fine Arts, Boston, Museum of Fine Arts, Lyon, France, Musée des Augustins (Toulouse, France), Musée des Beaux-arts, Nantes, France, Musée National du Château, Pau, France, the National Gallery of Art (Washington D.C.), the National Gallery of Australia (Canberra) and the Royal Museums of Fine Arts of Belgium are among the public collections holding sculpture by Augustin Pajou.