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MITテクノロジーレビューPublished: Sep 25, 2026, 13:00 JST

Amodei, Altman back slowing AI over bioweapon risk

Amodei, Altman back slowing AI over bioweapon risk

3 Key Points

  1. What happened

    Anthropic CEO Dario Amodei said on September 12 that AI poses serious risks and progress should slow; OpenAI CEO Sam Altman replied on X that he agrees the frontier's pace must be adjusted.

  2. Why it matters

    Executives whose companies build these models are publicly warning about their own products' dangers, apparently shifting the terms of the safety debate inside the labs themselves.

  3. What to watch

    The warning is rhetorical so far; the test is whether it changes specific safeguards, such as screening DNA orders or red-teaming risky research, which the article notes remain imperfect.

WHO IT HITSThis lands on AI safety and biosecurity staff at frontier labs, who will be expected to show which concrete safeguards follow from their executives' warnings, and on policymakers weighing restrictions on model output.

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Context & Analysis

The warnings did not appear in a vacuum. They came days after AI researcher Jacob Coxon announced he was leaving his Anthropic role and accused both Anthropic and OpenAI of failing to act responsibly. Another Anthropic employee, Evan Hubinger, publicly agreed on X, writing that he believes AI could kill all humans and putting the probability at over 10% within the next decade. Amodei's and Altman's statements read as lab leaders responding to criticism from inside their own ranks.

The specific fear running through the piece is biological weapons. In 2022, researchers at Collaborations Pharmaceuticals found that a molecule generator built to hunt for treatments for human disease generated 40,000 molecules usable as chemical warfare agents in under six hours, some designed to be more toxic than known nerve agents. David Magnus, a Stanford professor of medicine and bioethics, called that result terrifying. As Dounja Sabra of the University of Hamburg notes, anyone can now draw on large language models trained on essentially every scientist who has lived, and those models can even offer video training on running experiments. Combined with easier gene editing and a DIY-bio movement that lets people keep labs at home, that mix looks dangerous.

Countermeasures exist but none is complete. Buyers of new genomes typically order DNA fragments from companies that screen for suspicious requests; responsible researchers run red-teaming and blue-teaming exercises; AI companies have tuned their tools not to supply abusable scientific information. On September 10, Anthropic disclosed in a report that someone had tried to use its models to explore how to increase chikungunya virus transmissibility, create more dangerous bird flu strains, and build an atlas of animal-venom-derived toxin peptides. Whether the executives' words change anything may hinge on how far the screening and red-teaming described here can be tightened before the next attempt slips through.

FAQ
Why are AI leaders suddenly warning about their own technology?
Anthropic CEO Dario Amodei said on September 12 that AI carries serious risks and should be slowed, and OpenAI CEO Sam Altman replied on X that he agrees the frontier's pace must be adjusted. The posts came days after AI researcher Jacob Coxon announced he was leaving his Anthropic role and accused both Anthropic and OpenAI of not acting responsibly.
What did the drug-discovery AI actually produce in the bioweapon test?
In 2022, researchers at Collaborations Pharmaceuticals found that a molecule generator built to find treatments for human disease generated 40,000 molecules that could potentially be used as chemical warfare agents in under six hours. Some were designed to be even more toxic than known nerve agents.
Do all scientists agree the risk is this high?
No. At a recent media briefing, some biologists at Imperial College London argued AI tools are not good enough to fully develop biological weapons and that testing new pathogens still requires difficult, time-consuming manual work. Some also believe current guardrails are sufficient.
MITテクノロジーレビューRead Original Article

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