Anthropic says a group of roughly 950 Claude agents identified a genetic system with features resembling Crispr after searching large genomic databases for unusual reverse transcriptases. The agents completed the computational search in 21.5 hours, narrowing more than 200,000 candidates to a family associated with repeating DNA sequences.
The company calls the system ART, for array-associated reverse transcriptases. It appears in jumbo phages, large viruses that infect bacteria. One physical experiment is included in an unreviewed technical report, but Anthropic acknowledges that it does not yet know what ART does or whether it can edit genes.
Outside scientists praised the speed of the search while warning that the biological claim is ahead of the experiments. The reverse transcriptase itself appeared in a 2021 paper; the newer observation is the repeat structure around it. Experts said ART may be related to retrons, bacterial immune systems that can support some editing techniques but are not equivalent to Crispr.
The result is therefore a promising hypothesis, not a new gene-editing tool. Claude helped find a pattern that could take people months to uncover manually, but human researchers designed the search and must now test activity, usefulness and safety in the laboratory. The closed model and undisclosed training data also make independent reproduction harder.