I spent a second trying to understand why anyone would do this (gain of function research?), until I realized the title should have retained the BBC's hyphen.

> Superbug killing antibiotics with the help of AI

means "A superbug is killing antibiotics, with the help of AI."

> Superbug-killing antibiotics with the help of AI

means "Antibiotics are killing a superbug, with the help of AI."