Stories about Z.ai

Z.ai has released the open-source model GLM-5.3-Flash, which has 32 billion parameters and scores only three points lower than the larger GLM-5.3 on the Artificial Analysis Intelligence Index, but at one-seventh the cost. Notably, all inference traffic runs on Chinese AI chips rather than Nvidia hardware. The release of GLM-5.3-Flash marks a new breakthrough in the balance between cost and performance of AI models.

Z.ai has introduced GLM-5.3-Flash, the first native multimodal model in the GLM-5 series. It has 320 billion total parameters and 18 billion active parameters, supporting a context window of 1,048,576 tokens. The model weights are released under the MIT license on Hugging Face, with API pricing at $0.15 per million inputs and $0.50 per million outputs. GLM-5.3-Flash scored 84.3 on Terminal-Bench 2.1 and 63.4 on DeepSWE v1.1.

Z.ai has officially confirmed that it is the lab behind the mysterious Ox Alpha model, which has performed outstandingly on benchmarks and leaderboards, with its weights files set to be released soon. The debut of Ox Alpha has sparked a wave of excitement in the AI research community. Z.ai's move is expected to further advance AI model development and open-sourcing.