MBZUAI releases Jais 3: six open Arabic-centric models up to 375B built on K2 Horizon
lmoroney · x · 2026-10-19
MBZUAI's Institute of Foundation Models, with Inception and Cerebras, released Jais 3 — six open Arabic-centric models ranging from 0.9B to 375B parameters.
- Each model starts from the matching K2 Horizon checkpoint rather than training from scratch
- Pipeline: continued pre-training, a cool-down phase, supervised fine-tuning, plus a targeted step for Arabic capability
- Core question explored: how to adapt a strong foundation model to a new language without the cost of from-scratch training
Related event: MBZUAI Open-Sources Jais 3 Arabic Model Family Up to 375B Parameters(2 posts)→
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