Nvidia, Microsoft, Meta, and over 20 other tech companies have released a letter urging policymakers to avoid premature restrictions on open-weight AI models, arguing that such restrictions would stifle competition and drive innovation overseas. The letter comes as Chinese open-weight models are gaining steam against American companies, sparking debate about potential restrictions. OpenAI and Anthropic, which are gearing up for massive IPOs, did not sign the letter. The US government is considering restrictions on Chinese models due to concerns about intellectual property theft and national security.