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Radical Numerics Administers First AI-Designed Phage Therapy to Human Patient

October 21, 2026 at 02:36 EDT

Foundation Models
Healthcare

For the first time, researchers have successfully administered a virus designed entirely by artificial intelligence to treat a human patient. Radical Numerics, a Stanford-derived AI research lab, announced on October 20 that it deployed a bacteriophage cocktail generated by its Omnii-1 genome language model to a patient suffering from an antibiotic-resistant bacterial infection through a compassionate-use clinical pathway authorized by the FDA.

OCTOBER 2026 · RADICAL NUMERICS

AI Designs Phage Therapy in Days, Not Months

For the first time, an AI-designed bacteriophage cocktail was administered to a human patient with a drug-resistant infection, replacing months of blind screening with algorithmic design.

700,000

Genomes generated

Viable phages tested

Token context window

Modalities trained on

The AI Advantage

Traditional phage therapy requires screening thousands of candidate viruses—most fail. Omnii-1 skips the blind search: it generates viable phage designs computationally, then validates only the most promising candidates in the lab.

Key takeaway: The patient received AI-designed phage therapy within weeks through a compassionate-use FDA pathway. Clinical outcomes remain undisclosed; broader efficacy and safety data await larger trials.

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