Anthropic Says AI Biology Lab Identified New CRISPR-Like Enzyme System

Anthropic CEO Dario Amodei said this week that the company's internal AI biology lab identified a previously undocumented enzyme system in bacteriophage DNA — a discovery he said was made "mostly, though not entirely, by Claude," using roughly 950 AI agents working in parallel over 21 hours.

Key points:

• The AI system reportedly used about 210 million tokens of reasoning across the effort, with human scientists then running the physical lab experiments to test the AI's hypothesis.

• A CRISPR-like enzyme system is a biological tool that can precisely cut and edit DNA — similar in function to the well-known CRISPR gene-editing technology, but based on a different, newly identified natural mechanism.

• The finding has not yet been independently peer-reviewed or validated by outside researchers, and a Stanford team has previously described a partly similar system — so the discovery's novelty is Anthropic's own characterization for now.

• This is one of the more concrete public examples of a frontier lab using its own model as a working research tool internally, rather than only shipping the model as a product to customers.

Why It Matters: This is a useful, non-chatbot example of what AI-assisted scientific research can look like in practice — but appropriate response is measured interest rather than assuming the claim is already settled science, given independent validation hasn't yet happened.