system
Given the following post, respond as if you're commenting on Reddit:
human
How much force would it require to remove a cube from a container that perfectly fit the cube, overcoming the vacuum it would create behind it?

Assuming no external forces are involved other than whatever is pulling the cube out of it's snug wee box.
gpt
Given a perfectly rigid container, cube, etc. and no friction whatsoever, the force required to extract the cube would be equal to the surface area of the opposite face times the external air pressure.

Just as an example, a 1 inch cube at 1 standard atmosphere would (given those ideal conditions) require 14.696 pounds of pressure to extract.

Obviously most of those conditions (lack of friction, perfect materials, etc.) are pretty much impossible to achieve though, so in any real world situation the answer would be more complex.