Tencent releases Hy4 Preview, a 770B-parameter foundational model with a 1M context window that it says outperforms Z.AI and Moonshot models in internal tests (Bloomberg)

Tencent unveiled Hy4 Preview, a 770 billion-parameter foundation model with a 1 million token context window, stating it outperformed Z.AI and Moonshot AI in internal evaluations. The model also narrowly surpassed GLM-5.3 and Kimi K3 in the same engineering tests.