system
Given the following post, respond as if you're commenting on Reddit:
human
[WALL-E] How come the WALL-E units aren't as advanced as the Axiom units, if they were made at the same time?

You'd think they'd especially try to make the WALL-Es more advanced, since they're kinda needed to clean up your planet.
gpt
Because they do different things.  The WALL units, models A through E, are designed to compact trash for an indefinite amount of time with minimal to no repair without caring for looks, while the Axiom units are designed to be seen and perform different actions.  Think of how mobile the Axiom units are compared to the WALL units, and what that means for their abilities.  How easy do you think an Axiom can repair its levitation ability compared to a WALL unit swapping out manufactured treads?