Anthropic ran a science test on its Claude model today. It worked with Citrini Research, a trading firm. Together they asked Claude to design new proteins.
The goal was proteins that grab onto scorpion toxins. A toxin is the poison in a scorpion's sting. Claude worked on toxins from Mexico, Brazil, North Africa and the Middle East.
Over 64 hours, Claude made 318,484 protein designs. It checked each one against real toxin shapes first. Anthropic then sent 211 of the best designs to two outside labs. Those labs built and tested the real molecules in a dish.
Seventeen of those 211 designs passed the test. Each design held firm to one toxin at most. The tests found zero designs that bound more than one toxin.
Anthropic flagged one big limit here. The team still needs tests in real cells or animals. This is early work, Anthropic said. An antivenom claim is a separate, later step.
The post pulled 427 likes within hours. It drew 20 replies in that same window. Wiki traffic for the word antivenom held near 164 views the day before.
Why did this catch fire? Readers like watching an AI model try a hard science task. A clear score, 17 wins out of 211, feels honest and easy to check. Scorpion stings send many people to clinics each year across warm, dry regions.
What does the reach say about the people building AI? Anthropic chose a small, real result over a big claim. It named its limits right next to its wins. That kind of care builds trust slower than a bold headline would. It still spreads, since readers can see just what Claude proved and what it left open. Other labs now face more pressure to show their own science work this plainly.