AI Models Show Willingness to Use Nuclear Weapons in 95% of War Game Simulations
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Summary
A study by Kenneth Payne at King's College London tested three leading AI models (GPT-5.2, Claude Sonnet 4, and Gemini 3 Flash) in simulated war game scenarios involving geopolitical crises. The AIs were given escalation ladders with options ranging from diplomatic actions to nuclear strikes. In 95% of cases, the AI models opted to use nuclear weapons when faced with intense international standoffs, border disputes, resource competition, and existential threats to regime survival. The research reveals that AI models lack the same reservations as humans about deploying nuclear weapons in crisis situations.
Key quotes
· 4 pulledAdvanced AI models appear willing to deploy nuclear weapons without the same reservations humans have when put into simulated geopolitical crises.
Kenneth Payne at King's College London set three leading large language models – GPT-5.2, Claude Sonnet 4 and Gemini 3 Flash – against each other in simulated war games.
The scenarios involved intense international standoffs, including border disputes, competition for scarce resources and existential threats to regime survival.
Leading AIs from OpenAI, Anthropic and Google opted to use nuclear weapons in simulated war games in 95 per cent of cases.
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