Silicon Valley leaders from Anthropic’s Dario Amodei to Nvidia’s Jensen Huang warned against a US crackdown on open-weight artificial intelligence systems, deepening a debate about how Washington should respond to a surprise breakthrough from Chinese startup Moonshot.In a blog post released Monday, Amodei sought to dispel claims that Anthropic supports a ban on open-weight models, which allow users to download and customize the technology. At the same time, he called for the US to adopt policy interventions to slow China’s AI development and said that all models — both open and closed — should go through mandatory safety testing before…