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Several luminous designed protein binders attach to a transparent molecular target above a physical laboratory assay tray.
Social good & healthGlobal+4 clusters01

Claude designs protein binders that survive wet-lab testing

Anthropic reports that Claude Opus 4.8 and Mythos Preview designed protein binders against 15 targets and succeeded against 14 after external laboratories produced and tested the designs. Reported hit rates ranged from 22.6 percent to 35.1 percent depending on the setup, above the 10 to 15 percent that Anthropic says is typical in current campaigns. The models orchestrated existing protein-design and folding tools with minimal human scientific guidance, producing 354 confirmed binders from 1,320 designs. This is a meaningful result because physical testing separates a scientific claim from a plausible-looking output. It is not a finished drug. Minibinders are an early design step, one target failed, additional characterization is planned, and the campaigns used substantial compute and specialist infrastructure. The same autonomy is dual-use, so Anthropic says its strongest biological capabilities remain restricted while it develops scientist access. The breakthrough and the control problem arrive together.

7 min
Hundreds of luminous search threads converge on one repeating DNA pattern before it passes to a human scientist at a laboratory bench.
Social good & healthUnited States and global genomic data+4 clusters02

Claude agents found a previously uncharacterized enzyme system with CRISPR-like repeats

Anthropic says a campaign of roughly 950 Claude agents found a previously uncharacterized biological system while mining public DNA-sequence data. Over about 21 hours and 210 million tokens, the agents gathered more than 200,000 reverse transcriptases, selected roughly 3,500 candidate systems, and narrowed the field to about 20 detailed reports. One agent noticed evenly spaced non-coding DNA repeats beside an unusual reverse transcriptase and an accessory gene in bacteriophages. Anthropic calls the system array-associated reverse transcriptases, or ART. The arrangement resembles CRISPR arrays, and early experiments indicate that the ART array is expressed as distinct short RNAs. That does not establish a new gene-editing tool. Anthropic states that ART's natural function is unknown, the underlying reverse transcriptase had appeared in earlier studies, and all laboratory experiments were performed by human scientists. The work is a preprint from an Anthropic research group and its own Bay Area lab, so independent replication and peer review remain essential. The important signal is methodological. Agents can expand genome mining by running hundreds of searches and critiques in parallel, while expert judgment and physical experiments decide which machine-generated hypotheses survive. If replicated, the productivity gain may come less from replacing biologists than from making the neglected parts of enormous public datasets searchable at a new scale.

10 min