MBZUAI K2 Horizon unveils six fully open models up to 375B
The Institute of Foundation Models at MBZUAI announced K2 Horizon on September 3, 2026, a suite of six fully open AI models ranging from 0.9 billion to 375 billion parameters released with weights, code, data and methodology. The models are designed to cover edge to enterprise deployments and claim state‑of‑the‑art performance at multiple parameter scales for reasoning, coding and agentic tasks. ([mbzuai.ac.ae](https://mbzuai.ac.ae/news/mbzuais-institute-of-foundation-models-launches-k2-horizon-the-worlds-largest-fully-open-ai-models-in-history/?utm_source=openai))
Source: MBZUAI

