Anthropic's Claude identifies Crispr-like enzyme system in 21.5 hours

September 29, 2026 at 11:03 PM2 min

This digest was compiled by AI from multiple sources — links to the originals are below.

Anthropic announced on September 23 that its AI model Claude identified an enzyme system with properties reminiscent of Crispr. The discovery was made by about 950 Claude agents running simultaneously in 21.5 hours. The finding is the first from a research group formed by Anthropic earlier this year, but its significance remains unverified.

Key Facts

Anthropic announced the discovery on September 23, 2026.
About 950 Claude agents running simultaneously found the genetic sequences in 21.5 hours.
The system, named ART (array-associated reverse transcriptases), is found in jumbo phages.
The technical report has not been peer-reviewed.
Fyodor Urnov of UC Berkeley praised the announcement, while Stanford's Le Cong noted that experiments are still pending.

The Discovery

Anthropic announced on September 23 that its large language model Claude identified an enzyme system with properties reminiscent of Crispr. The system was found after researchers prompted Claude to search genomic databases for interesting new examples of reverse transcriptases. Claude agents initially identified more than 200,000 possible reverse transcriptases, then narrowed the scope to an unusual family containing long repeat DNA sequences. Anthropic named the system ART, short for array-associated reverse transcriptases, and it is found in jumbo phages.

Scientific Reaction

Fyodor Urnov, a gene-editing expert at UC Berkeley, complimented Anthropic for telling the world about their discovery. Le Cong, a professor at Stanford University, said the experiments are still in the queue while the PR is already live. Anthropic stated in an X post that only a handful of known systems share its features and all of them can cut, copy, and paste DNA. One physical experiment was included in the technical report, which has not been peer-reviewed.

Unverified Potential

It remains unknown whether this enzyme system can be used as a gene-editing tool or whether it is useful. Le Cong compared the finding to scanning Santa Monica Beach for a diamond and finding something shiny that still needs lab verification. Anthropic has set up a wet lab for drug discovery and has been clear that the finding is not the end of its work.