Chinese AI startup Moonshot unveils “Kimi K3,” a large AI model it says is the world’s largest open-weight system. Reuters reports that the company introduces the model with 2.8 trillion parameters and describes its performance as approaching that of U.S. rival Anthropic’s frontier “Fable” model. Another report highlights a key capability of Kimi K3: a 1 million-token context window, which allows the system to take substantially more information into a single prompt than earlier generations.
Both sources present the announcement as a step in Moonshot’s effort to narrow the performance gap with leading U.S. developers while expanding the scale and usability of its model. The coverage focuses on the company’s claims about model size, openness (open-weight availability), context length, and comparative performance, rather than independent benchmarking. The reports do not detail pricing, licensing terms, or timelines for availability beyond the public unveiling.
