The Swans announced on their official website that 19-year-old Biabi has agreed a three-year deal for an undisclosed fee, subject to international clearance.
London-born Biabi will link up with the club's under-21 squad
He has represented Scotland at under-19 level and helped Falkirk reach the Scottish Cup final last season, when he went on as a second-half substitute during a 2-1 defeat against Inverness
Biabi becomes the Swans' third signing from Falkirk during the last 18 months, following Jay Fulton and Stephen Kingsley to the Liberty Stadium
"I am excited to join because this is a big club," Biabi told www.swanseacity.net
"Obviously, Stephen and Jay arrived here from Falkirk, so that will help me settle into the club.
"I have spoken to them both, and they've made me feel very welcome.
"I've seen Jay play in big games for the first team in the Premier League and cup, and I would like to follow in their footsteps."
Source : PA
Source: PA