China’s Moonshot AI released the full open weights for Kimi K3 on July 26, 2026, a 2.8-trillion-parameter sparse mixture-of-experts model described as the largest open-weight AI model to date. The model activates only 16 of 896 experts per request and supports a 1-million-token context window, and reportedly beat Anthropic’s Claude Fable 5 on the Frontend Code Arena benchmark. The release reflects China’s continued push to advance frontier AI capabilities while working around US compute export restrictions.
