How long did it take brunelleschi and ghiberti to finish the sacrafic of isaac?

Filippo Brunelleschi and Lorenzo Ghiberti both competed for the commission to create the "Sacrifice of Isaac" relief for the Florence Baptistery in 1401. Ghiberti completed his panel in about a year, while Brunelleschi's panel also took a similar time frame. Ultimately, Ghiberti won the competition, and his work became the basis for his later commissions.