Nene Royal has emerged as the clear frontrunner in America’s Got Talent Season 21, commanding an 80.5% implied probability as traders price in her viral “Zombie” audition, four-judge approval, and Mel B’s Live Golden Buzzer during quarterfinals that sent her straight to the finals. The 16-year-old Thai singer-guitarist’s raw rock delivery, self-taught skill, and stage presence have drawn repeated praise from Howie Mandel and others, creating strong momentum ahead of the September 22–23 finale. Other Golden Buzzer recipients such as Hundred Fingers and Unitree sit in the low double digits or below, reflecting solid but less dominant trajectories through the live rounds, while most remaining semifinalists and finalists trade under 5% amid limited breakout moments or public buzz. Semifinal voting and final performances remain the key swing factors before the winner is crowned.