AI creates bacteriophages in first synthetic virus study

For the first time, researchers have used artificial intelligence to design and create entirely new, fully functional viruses. The achievement, detailed in a study published in the journal Science on August 6, 2026, marks a significant milestone in synthetic biology and has immediate implications for the fight against antibiotic-resistant bacteria, while simultaneously raising urgent questions about biosafety and governance.

A team led by Dr. Brian Hie, a chemical engineer at Stanford University, in collaboration with scientists from the Arc Institute, used AI models called Evo to generate complete viral genomes from scratch. The models were trained on vast libraries of genetic sequences from millions of organisms, but the researchers intentionally excluded data from viruses that infect humans. Focusing on a well-studied bacteriophage known as ΦX174, which infects only E. coli bacteria, the AI produced hundreds of thousands of candidate genomes.

From these, the researchers synthesized 285 into DNA molecules and inserted them into bacteria. Sixteen of these designs successfully assembled into viable viruses capable of infecting and killing E. coli. Notably, when combined into a...