HK Stock Market Move | Z.AI (02513) opened over 8% higher, claiming "the bull is here," launching and open-sourcing GLM-5.3-Flash.

Z.AI (02513) opened up over 8% higher and as of the time of this report, is up 8.25%, priced at 1,115 Hong Kong dollars, with a transaction volume of 163 million Hong Kong dollars. On the news front, on August 26, Z.AI announced the launch and open-sourcing of GLM-5.3-Flash (320B-A18B), which is the first native multimodal model in the GLM-5 series. It is priced at 1/10 of GLM-5.3, and during a limited-time discount, it is priced at 1/20 of GLM-5.3 and 1/40 of Opus 4.8. Previously, GLM-5.3-Flash was tested on a large scale under the anonymous model Ox-Alpha (referred to as Niu Lai in the Chinese community) on OpenCode and OpenRouter, setting a new high for request volume on both platforms, with all these request flows supported by domestic chip computing power. According to internal evaluations from Z.AI, the Artificial Analysis Intelligence score for GLM-5.3 Flash is 57 points. This score surpasses the previous flagship model GLM-5.2, is on par with Claude Opus 4.8, and is higher than the formal version of the DeepSeek flagship model V4 Pro, which scored 53 points.