Alex in 8 Mile is generally understood to be a fictionalized version of Kim Scott, Eminem’s real-life on-and-off partner and later ex-wife. The movie borrows from his life, but Alex is not a direct one-to-one portrayal; she’s a screen character built to fit the story.

Why people connect her to Kim

  • Alex appears as Jimmy’s love interest, and the relationship has the same kind of volatility that people associate with Eminem’s real-life relationship with Kim Scott.
  • The movie’s creators changed names and compressed real events for drama, so the character is more of a stand-in than an exact depiction.
  • Online discussions often point to Kim as the obvious real-life inspiration.

What the movie changes

  • In the film, Alex is a relatively brief romance.
  • In real life, Eminem and Kim Scott had a much longer, messier history and a child together.
  • So the safest answer is: Alex was inspired by Kim Scott, but she’s not literally Kim onscreen.

Context

8 Mile is a loose, semi-autobiographical film, which means several characters and events are blended, simplified, or invented for the plot.

TL;DR: Alex is basically a fictionalized version of Kim Scott.