Chinese artificial intelligence (AI) start-up Moonshot AI Technology Co (月之暗面) yesterday unveiled Kimi K3, a 2.8 trillion-parameter model that the firm said is the world’s largest open-weight AI system and delivers performance approaching US giant Anthropic PBC’s frontier Fable model.The launch, which comes a month after Anthropic’s Fable and Mythos models were abruptly withdrawn by the US government due to security concerns, underscores how quickly China’s open AI ecosystem is narrowing the gap with the most advanced US systems.Companies including Moonshot, Z.AI Co (智譜) and MiniMax Group Inc (稀宇科技) are releasing increasingly powerful models at sharply lower cost, challenging long-held assumptions in the West that Chinese developers trail their American peers by months.
People walk past the Moonshot booth at the World Artificial Intelligence Conference in Shanghai yesterday.
Moonshot said that Kimi K3 is the first open-weight model to approach the 3 trillion-parameter mark and is designed for advanced reasoning, long-horizon coding and knowledge work.The model features a 1 million-token context window, allowing it to process and retain substantially more information than earlier generations in a single prompt, it said.
