Moonshot AI has finalized the rollout of its flagship Kimi K3 model by publicly releasing the complete set of open weights, marking the full availability of what the company positions as the first open-weight system in the three-trillion-parameter class. Kimi K3 is a sparse mixture-of-experts architecture containing 2.8 trillion total parameters, of which roughly 104 billion activate for any given token. The system supports a one-million-token context window and processes text, images, and video natively through a vision encoder trained from scratch. The open-weight checkpoint, quantized and sharded for practical distribution, now resides on Hugging Face and GitHub under the Kimi K3 License, which permits broad commercial and research use with attribution requirements for very large deployments. By making a near-frontier-scale system freely downloadable, Moonshot continues its pattern of pushing the upper limits of open-model size and capability.