The couple separated in January of this year, with Benson-Gorelick fiiling a legal motion the same week.
Kenny G has since made the decision to formally end his 20-year marriage to Benson-Gorelick, reports People.
Court documents obtained by E! Online state that the former couple have a prenuptial agreement.
Kenny G is said to be seeking joint custody of the pair's 14-year-old son Noah.
Benson-Gorelick's January filing, which cited irreconcilable differences as the reason behind the split, had requested full physical custody of the teen.
Divorce lawyer Laura Wasser - who has previously acted for Kim Kardashian, Britney Spears and Christina Aguilera - is representing Kenny G.
Kenny G and Benson-Gorelick married in May 1992.