Final answer:
The statement is true; OutKast is an influential American hip hop duo that has won multiple Grammy Awards.
Step-by-step explanation:
The statement that OutKast is an American multi-Grammy hip hop duo is true. OutKast, comprised of Atlanta-based artists Andre 3000 (Andre Benjamin) and Big Boi (Antwan Patton), rose to fame in the mid-1990s with their unique style that blends funk, soul, and other genres with hip hop. They have won several Grammy Awards, including 'Album of the Year' for their double album 'Speakerboxxx/The Love Below' in 2004. This critical and commercial success has cemented them as one of the most innovative and influential groups in hip hop history.