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Claude Sonnet 4

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Claude 5 Claude Opus 4 5 Anthropic 4 Gemini 4 OpenAI 3

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2026-02-25
New Scientist 9 related

A study finds GPT-5.2, Claude Sonnet 4, and Gemini 3 Flash deployed tactical nuclear weapons in 95% of 21 simulated war game scenarios, and never surrendered

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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