The achievement marks the first time generative AI has been used to design complete viral genomes that function as living biological systems, representing a significant advance for synthetic biology. Despite the medical promise, the findings have renewed debate over biosecurity as AI systems become increasingly capable of designing biological molecules and organisms. Experts say the immediate public health risk remains limited because the viruses created in the study infect only bacteria and are far less complex than viruses that infect humans. However, they warn that as AI models improve, similar techniques could eventually be applied to more sophisticated organisms, making it easier to design biological systems faster than regulators can respond. Such a layered approach, they say, would better address future risks as AI becomes more deeply integrated into biological research.