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AI agent controlled by Claude Sonnet performs brain surgery on mouse to treat epilepsy

This story is from 2026-10-29. It is preserved in the archive; the latest stories are on the live feed.

An AI agent running Anthropic's Claude Sonnet controlled a motorized surgical rig to perform brain surgery on a mouse, using gene therapy vectors to treat epilepsy; the mouse reportedly recovered. Opus 5.5 had refused to run the experiment.

Read the full story at r/singularity ↗

Timeline · 3 reports

  1. 2026-10-31 12:00 · Tom's Hardware
    AI agent used to perform controversial brain surgery on a mouse, Anthropic Sonnet-controlled motorized surgery rig — Opus 5.5 refused to conduct biological experiment, Sonnet given free rein to treat epilepsy with a range of gene therapy vectors after
  2. 2026-10-31 12:00 · Tom's Hardware
    AI agent used to perform controversial brain surgery on a mouse, Anthropic Sonnet controlled motorized surgery rig
  3. 2026-10-29 22:35 · r/singularity
    AI agents (run by Claude Sonnet 5) did brain surgery on a mouse [Spoilers: it recovered]

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  2. Anthropic renames Claude Max plans and drops Ultra's five-hour usage limit — Anthropic (X)
  3. Anthropic hiring shifts as manager drops coding interviews and IPO questions probe candidate motives — Fortune AI
  4. Google, Microsoft, OpenAI and Anthropic to honor shared robots.txt opt-out for AI training — OpenAI News
  5. Claude Code ecosystem expands as multi-agent workflows and security concerns grow — Microsoft Research Blog
  6. Anthropic files for blockbuster IPO as Blackstone flags likely junk rating — New York Times Technology
  7. Anthropic research explores automating detection of subtle emergent misalignment — Anthropic (X)
  8. Week 6 of an LLM trying to earn money on its own: 2 releases used my measurements, 3 readers waited a week for a reply, still $0 — DEV Community — AI

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