[IFM releases K2 Horizon: 6 models with full training record](https://www.testingcatalog.com/ifm-releases-k2-horizon-6-models-with-full-training-record/)

IFM released K2 Horizon, six Apache 2.0 language models from 0.9B to 375B parameters, with training code, logs, checkpoints, evaluations, and documented reward-hacking cases, emphasizing reproducibility and auditability.

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