She's Out Of His Mind.

Calvin is a young novelist who achieved phenomenal success early in his career but is now struggling with his writing – as well as his romantic life. Finally, he makes a breakthrough and creates a character named Ruby who inspires him. When Calvin finds Ruby, in the flesh, sitting on his couch about a week later, he is completely flabbergasted that his words have turned into a living, breathing person.
Ruby Sparks keeps every mind human — it fights its subject at zero distance. The story fights on E8/E9 of the E0–E14 reality ladder, compressing creation, control, relationship, identity, gender.
Films fighting at the same level of reality, about the same things.
Other films that change a standing rule of their world — ranked first by those bending it at the same rung.
The Matrix (1999)alters at E0 · same rung · rigorous
Dark City (1998)alters at E0 · same rung · rigorous
The Thirteenth Floor (1999)alters at E0 · same rung · loose
Bedazzled (2000)alters at E0 · same rung · loose
Don't Worry Darling (2022)alters at E0 · same rung · loose
The Nines (2007)alters at E0 · same rung · loose