MBZUAI Releases K2 Horizon 375B A23B Model

Artificial Analysis posted that K2 Horizon 375B A23B, a new open weights Mixture-of-Experts model from UAE's MBZUAI, scores 47 on the Artificial Analysis Intelligence Index. The account noted relatively strong agentic performance and a 30 point jump over its predecessor. The model has 375B total and 23B active parameters. The account noted that it leads nearby open weights models on agentic evals like GDPval-AA and has a low hallucination rate but trails on knowledge and hard reasoning tasks. Separate posts from the same account link to a full breakdown of individual evaluations and to the model page on artificialanalysis.ai.