# Exin founder reports AI-controlled brain injection in a live mouse

_Published Saturday, October 31, 2026 at 7:05 AM EDT · AI, Robotics, Science · Latest · Tier 2 — Notable_

![Exin founder reports AI-controlled brain injection in a live mouse — Primary](https://media.wired.com/photos/6ae4d6bbd55a0e2bc0a8d990/191:100/w_1280,c_limit/103026-AI%20Mouse%2002.jpg)

An AI agent controlled a robotic brain injection in a living mouse, Exin Therapeutics cofounder Gabriel Ocana Santero told WIRED. The agent selected a treatment from 19 options, chose the brain region and injection coordinates, and controlled injection volume and speed after a veterinary surgeon performed the craniotomy.

The team used Claude Sonnet 5 after Claude Opus 5.5 refused to proceed. Humans approved the injection plan and retained an emergency motor cutoff. A coordinate-system glitch required code changes by a separate agent, extending a procedure that typically takes about 45 minutes to slightly longer than an hour. The team is waiting to assess the therapy's effect on seizures.

## Sources

- [WIRED](https://www.wired.com/story/an-ai-agent-did-brain-surgery-on-live-mouse/)

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Canonical: https://techandbusiness.org/newswire/EAY4LFLnoK1FOXF5vnmwHr
Published: 2026-10-31T11:05:44.327Z
Story chronology: 2026-10-31T10:00:00.000Z
Retrieved: 2026-10-31T13:33:32.155Z
Publisher: Tech & Business (techandbusiness.org)