Shine Global reports that Moonshot AI’s Kimi has released and open-sourced its new MoE foundation model, K2. With 1 trillion parameters and 32 billion active at once, K2 surpasses other open-source models in coding, tool use, and reasoning. Using the MuonClip optimizer, it achieves efficient large-scale training and better token efficiency. K2 offers strong general agent capabilities and is now open for public access.