On July 16, the Chinese AI start-up Moonshot AI released its Kimi K3 large language model. Kimi K3 ranks third on Artificial Analysis' Intelligence Index and became the first Chinese model to top a major coding leaderboard, Arena.ai's Frontend Code Arena. K3 is an open-weight AI model, free for anyone to download and modify. Frontier-level, open-weight models from China make this more difficult to achieve over the long run. Then, more than 1,000 employees at leading AI labs, including their lead scientists, asked Washington for tools to "deliberately pace" AI development.