K2 Horizon: Frontier Performance, Radically Open
Summary
IFM introduces K2 Horizon, a six-model fleet (0.9B to 375B-A23B) with world-leading performance across scales. The release includes full training lifecycles, data recipes, code, configurations, and logs under Apache 2.0, and highlights the MoVA attention mechanism and Uno diffusion for faster, lossless inference. The article frames Horizon as an open science project designed to reveal how capabilities emerge and to enable researchers and developers to reproduce and adapt methods across tools and domains.