Chinese AI start-up Moonshot AI launched Kimi K3, a open-source model with 2.8 trillion parameters. The model scores 57 on the Artificial Analysis Intelligence Index, reducing the gap with top-tier models while approaching levels seen in GPT-5.6 Sol and Fable 5. Open weights are scheduled for release on July 27, signaling a shift from low-cost Chinese AI offerings to higher-performance alternatives.