K2 Horizon

Open weights under Apache 2.0: 375B parameters, 23B active per token, a 512K context window, and a GPQA Diamond score of 87.3 in the model card's own table.

IFM | In Edition 51, Saturday 12 Sep 2026

SOURCE IFM, K2-Horizon-375B-A23B model card

Added to The Deploy Log Monday 14 Sep 2026, updated Thursday 17 Sep 2026. Read Edition 51, the edition that carried it.

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