Claude Flagged a CRISPR-Like Enzyme System After a 21-Hour Search
Anthropic says about 950 Claude agents spent 21 hours on DNA data and surfaced a repeat-linked enzyme system called ART.
Direct answer
On 24 September 2026 Anthropic said Claude agents found a previously unnoticed enzyme system, ART, next to CRISPR-like DNA repeats. The company says its function is still unknown and the preprint is not yet peer reviewed.
Anthropic said on 24 September 2026 that Claude had picked out a previously unnoticed enzyme system in DNA data. The company calls it array-associated reverse transcriptases, or ART. It sits beside a run of short repeated DNA, the pattern that made CRISPR famous, plus a partner gene whose job is still unclear.
The search was a harness of agents, not a single chat. Coverage of Anthropic's write-up says about 950 Claude agents worked for 21 hours, found more than 200,000 genes for one enzyme class, and narrowed the set to 20 for a closer look. One agent noticed the repeats next to two genes in viruses that infect bacteria. Anthropic says people set the high-level direction and the agents did the scan.
What is still unproven
Anthropic says it does not yet know the function. Early experiments suggest the DNA array is expressed as short RNA pieces, a pattern shared with programmable systems that cut, copy, or paste DNA. That is a resemblance, not a demonstration that ART edits genes. The company released a preprint and a technical report and asked outside labs to collaborate. The preprint has not been peer reviewed.
Dario Amodei described the result to the UN Security Council as preliminary, and said it may be a new gene-editing mechanism with possible use in gene therapy. The claim to watch is the narrower one: a model-directed search surfaced a candidate that scientists had not marked, and the biology is not finished.
Source: Anthropic.
FAQ
- How large was the search?
- Reporting on Anthropic's account says about 950 agents ran for 21 hours, screening on the order of 200,000 enzyme genes and narrowing to 20 candidates.
- Is ART a new gene editor?
- Anthropic says the system looks programmable and resembles CRISPR, and that early lab work has not established what it does.