An AI Agent Injected Drugs Into a Live Mouse’s Brain

They asked the AI exemplary to take a attraction from 19 options successful a spreadsheet. A veterinary surgeon archetypal performed a craniotomy connected the rodent portion the AI cause observed. The cause selected the therapy, encephalon region, and injection coordinates, past controlled the robotic arms and injector needle, arsenic good arsenic each the parameters, specified arsenic measurement and speed.

The squad initially tested Anthropic’s Claude Opus 5.5 model, but it refused to usher the needle into the mouse’s brain, suggesting it mightiness halt midway done the surgery, which could endanger the animal.

“He did the experimental planning, but erstwhile it was clip to inject, helium said, ‘something connected my output is telling maine I shouldn't bash this,’” Santero says, referring to the agent. “That was precise interesting.”

The squad switched to utilizing Claude Sonnet 5, which agreed to proceed. Opus is simply a heavy-reasoning quality specializer champion for analyzable multistep problem-solving, according to Anthropic, portion Sonnet is amended suited for mundane tasks, though it whitethorn beryllium a agelong to telephone rodent encephalon country a communal chore. (Anthropic did not respond to a petition for comment.)

Frontier labs person been readying for much wide carnal manifestations of AI, and researchers person already begun enlisting agents to bash different things successful the carnal world. In August, Anthropic put retired a framework for however its models tin interact with the existent world. More recently, AI engineers enactment GPT, Claude, and Grok in complaint of a car to prime up luncheon astatine In-N-Out Burger. Only 1 of the models succeeded.

The encephalon injection process wasn’t without hiccups either. The researchers had established safeguards, including requiring the AI to suggest an injection program for quality support and installing an exigency fastener a quality could deed that would disconnect the rig’s motors. They besides restricted the agent's entree to the underlying instrumentality codification to forestall it from modifying its ain operating rules.