K2 Horizon 375B A23B
LLM360 · 379.2B parameters
The Institute of Foundation Models' flagship K2 Horizon sparse checkpoint, published through the K2/LLM360 program. It has native 524,288-token context and request-level reasoning effort controls; the complete BF16 checkpoint contains 379,167,159,168 parameters. The card reports approximately 23B active parameters per token, recorded at that published precision.