25 Tech Firms Sign Open-Weight AI Letter Backing US Leadership

The article reports that 25 major tech firms—led by NVIDIA, Microsoft, and Meta—signed an open letter defending open-weight open-source AI, arguing openness boosts innovation, competition, and security, and urging US policymakers not to impose premature limits. It frames the move as a strategic response to potential government controls and highlights a growing split between open-source proponents and closed-model leaders (e.g., OpenAI, Anthropic), with implications for US-China AI competition and the broader AI ecosystem.