Born in Paris in 1984, Antoine began playing the piano at a very young age. Marked by the listening to family records, he turned to jazz at the age of 13. It was only after completing his studies as a sound technician that he decided to pursue a professional career in music.

After his decisive meeting with Emil Spanyi at the Conservatoire du 9e arrondissement, he joined the CRR de Paris where he studied with the latter and Benjamin Moussay, and from which he left in 2010 with the DEM Jazz et musiques improvisées.

He has since multiplied various musical experiences. After a first album in 2011 and numerous concerts with the Urbs quintet, he created an electroacoustic duo with the band's saxophonist, Axel Rigaud. An EP will be launched in 2012. He will then perform in the play Qui m'aime me nuise me nuise, in which he improvises on texts by Dorothy Parker. On the strength of this successful experience, he joined Oh my glotte in 2013 as well as the opera for young audiences Le Prince Masqué. He has also played since then in the new soul band Serrad, in the post-rock band White Note since 2012 and in the rhythm and blues band Nantucket, whose first ep was released in 2018.

Antoine Karacostas decided to set up his trio in 2014 and explore the musical richness of his Greek roots. Accompanied by Anders Ulrich on double bass and Simon Bernier on drums, "Trails" is his first album as a leader and has been very well received by the press (Les Inrockuptibles FIP, France Musique, La Croix, Couleurs Jazz...). Recorded after returning from a tour in Japan, their new album "Insulary Tales" will be released in February 2019.