Chinese AI start-up Moonshot AI unveiled Kimi K3, an open-source model packing 2.8 trillion parameters. The model scores 57 on the Artificial Analysis Intelligence Index, closing the gap with leading models while approaching levels seen in GPT-5.6 Sol and Fable 5. Open weights will be for release on July 27, signaling a shift from low-cost Chinese AI offerings toward higher-performance alternatives.