In 1995 Banyai produced his first wordless children's book, Zoom. Honored as one of the best children's books of the year by the New York Times and Publishers Weekly, Zoom was soon published in 18 languages. He went on to author four more books and illustrate many more in collaboration with other writers and poets. "It's refreshing to encounter a group of virtually wordless books that invite children to consider their world from a point of view they may not have otherwise considered. The most stunning is Zoom, written—or, rather, imagined and then illustrated—by Istvan Banyai." 
While he continues to produce commercial illustrations for publications such as The New Yorker, Playboy, Rolling Stone, Time and Atlantic Monthly; cover art for Sony and Verve Records; and animated short films for Nickelodeon and MTV Europe, he is internationally respected for his unique philosophical and iconoclastic vision, thus transcending the status of commercial illustrator to gifted artist. Banyai describes his art as "an organic combination of turn-of-the-century Viennese retro, interjected with American pop, some European absurdity added for flavor, served on a cartoon-style color palette... no social realism added."
"Stranger in a Strange Land", Retrospective solo exhibition in the Norman Rockwell Museum, Massachusetts, 2013.
"Artists Against The War," Society of Illustrators, New York, January 2008
"Illuminare" Design Week Budapest. Hungary, 2005
Wordless book Festival, Kyoto, Japan, 2005
“America Illustrated” or the Best Contemporary American Illustrators, Teatrio association together with the Italian Foreign Affairs Department and the Embassy of the United States of America. Catalogue Cover Art, Published by Associazione Culturale Teatrio. Italy, 2000
Eastern European illustrators for the New York Times "Op-Ed". SVA, New York, 1998