The United States is pursuing a strategy to ban rival artificial intelligence models from China, driven by anxiety that low-cost alternatives could burst the multibillion-dollar AI bubble. The US reaction to the shock created by Moonshot AI’s Kimi K3 has been swift and dramatic, with senior administration figures accusing Chinese AI firms of theft. In response to news of a cybersecurity breach conducted by a US model, the US introduced a Kill Switch Act that will shut down any model that poses a threat or goes rogue.