China’s Moonshot unveils world’s largest open AI model, closing in on US rivals

Chinese AI startup Moonshot on Friday unveiled Kimi K3, a 2.8 trillion-parameter model that it said is the world’s largest open-weight AI system and delivers performance approaching U.S. giant Anthropic’s frontier Fable model.

The launch, which comes a month after Anthropic’s Fable and Mythos models were abruptly withdrawn by the U.S. government due to security concerns, underscores how quickly China’s open AI ecosystem is narrowing the gap with the most advanced U.S. systems....