US-China AI chip export controls escalate amid geopolitical tensions, threatening international AI safety collaboration

US threats to sanction Chinese AI developers over alleged intellectual property theft and export-control violations risk unravelling efforts to establish bilateral dialogue on AI safety, analysts say, just as increasingly powerful models raise concerns over serious security breaches.

US officials accused Chinese AI lab Moonshot of distilling its Kimi K3 model from Anthropic's advanced Fable 5 model, prompting Treasury Secretary Scott Bessent to warn of potential sanctions. Distillation is the process of training AI models using output from more advanced ones to lower the costs of training a powerful new AI tool.

The Commerce Department's Bureau of Industry and Security is also investigating whether Chinese firms like Moonshot are accessing advanced US chips illegally to train their models.

Both sides increasingly view frontier AI as a strategic asset and a security risk, yet experts argue cooperation on safety standards is becoming more urgent as powerful models could be misused for cyberattacks or other harmful applications. The accusations, coupled with reports that Washington is weighing restrictions on Chinese open-weight models, could provoke tit-for-tat measures and jeopardise a planned US-China AI dialogue scheduled for September, analysts say.

The tensions build atop years of US export controls designed to curb China's access to cutting-edge chips, measures that have increasingly dominated trade talks between the two countries. Depending on the number of Chinese companies targeted and the nature of the punitive actions taken, retaliation has the potential to scuttle both the AI dialogue and the September 24 meeting between Presidents Trump and Xi.