See which contestants moved on to the big finale and who was sent home emptyhanded.
The semifinals kicked off on Tuesday, and Williams was among the top performers of the night.
The last batch of hopefuls will find out if they are moving on or going home and ET is breaking down all the biggest moments.
It's been a rough season for stand-up comics on 'AGT.'
The former couple have reached an agreement after the model requested to take their kids to Germany to work on 'Next Top Model.'
During the third live quarterfinals results show of season 15, the actress's former onscreen husband paid her a special virtual visit.
Usama Siddiquee earned some laughs from Howie Mandel and Sofia Vergara, but Klum was not impressed by his act.
The 'AGT' hopeful opened up to ET about his controversial routine during the season 15 quarterfinals.
The outspoken judge had to sit out another episode while recovering from an injury he sustained earlier this month.
The model is supposed to film 'Next Top Model' in Germany later this year.
Here are the performers and contestants who will be giving it their all once more in this season's semifinals.
The 'Saturday Night Live' star sat in for the longtime judge on Tuesday.
'AGT' returned with live shows from Universal Studios Hollywood. See who made it onto the next round.
