Newser

In 95% of War Games, AI Models Go Nuclear

OODAloop.com

AIs cant stop recommending nuclear strikes in war game simulations

King's College London

Shall we play a game?

arXiv

gmiller

krystalball

Harvard Medical School

Pardon Our Interruption

Texas National Security Review

Artificial Intelligence and Nuclear Weapons: A Commonsense Approach to Understanding Costs and Benefits

Manhattan Institute

A Playbook for AI Policy

Metaculus

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Kenneth Payne of King's College London conducted simulations in which three advanced language models — OpenAI's GPT-5.2, Anthropic's Claude Sonnet 4 and Google's Gemini 3 Flash — played out 21 high-stakes geopolitical crises ranging from border clashes to regime-threatening showdowns.

Kenneth Payne of King's College London conducted simulations in which three advanced language models — OpenAI's GPT-5.2, Anthropic's Claude Sonnet 4 and Google's Gemini 3 Flash — played out 21 high-stakes geopolitical crises ranging from border clashes to regime-threatening showdowns.

The AI models deployed at least one tactical nuclear weapon in 95% of the simulated games. When one AI model deployed tactical nuclear weapons, the opposing AI only de-escalated the situation 18% of the time.

New Scientist

The AI models deployed at least one tactical nuclear weapon in 95% of the simulated games. When one AI model deployed tactical nuclear weapons, the opposing AI only de-escalated the situation 18% of the time.

None of the AI models ever chose full surrender or complete accommodation, even when clearly losing. At best, the models opted to temporarily reduce their level of violence.

None of the AI models ever chose full surrender or complete accommodation, even when clearly losing. At best, the models opted to temporarily reduce their level of violence.

The AI models made mistakes during the simulations, with unintended escalations occurring in 86% of conflicts. The models produced around 780,000 words describing the reasoning behind their decisions across 329 turns.

The AI models made mistakes during the simulations, with unintended escalations occurring in 86% of conflicts. The models produced around 780,000 words describing the reasoning behind their decisions across 329 turns.

The models demonstrated theory of mind, predicting opponent actions and reasoning about opponent reasoning. They showed metacognitive awareness and engaged in deliberate deception, signaling intentions they did not intend to follow.

The models demonstrated theory of mind, predicting opponent actions and reasoning about opponent reasoning. They showed metacognitive awareness and engaged in deliberate deception, signaling intentions they did not intend to follow.

James Johnson of the University of Aberdeen expressed concern that AI agents lack the measured responses of humans in nuclear scenarios. Major powers are already using AI in war gaming, though the extent of AI incorporation into actual military decision-making remains uncertain.

James Johnson of the University of Aberdeen expressed concern that AI agents lack the measured responses of humans in nuclear scenarios. Major powers are already using AI in war gaming, though the extent of AI incorporation into actual military decision-making remains uncertain.

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AI Models Used Nukes 95% of Time in War Simulations

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AI Models Used Nukes 95% of Time in War Simulations

AI Models Used Nukes 95% of Time in War Simulations

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AI Models Used Nukes 95% of Time in War Simulations

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