Zhipu AI's Next-Generation GLM-5.3 Model Leaked in Search Index

According to monitoring by Beating, Zhipu’s next-generation model, GLM-5.3, appears to have been prematurely exposed. Bing search results once indexed the ZCode page title as “GLM-5.3 Official Harness.” ZCode is Zhipu’s programming tool designed for GLM, used for planning, writing, reviewing, and executing development tasks. However, upon visiting the official website, the page still displays “GLM-5.2 Official Harness.” Zhipu’s model release records, development documentation, and API listings have also only been updated to GLM-5.2, with no mention of GLM-5.3. Current information only confirms that “GLM-5.3” was briefly indexed in ZCode’s search results, possibly due to a test title or pre-configuration. Yesterday, Li Zixuan, Global Head of Zhipu Z.ai, publicly asked users whether GLM-5.2 remains sufficient amid the frequent release of new models, seemingly generating anticipation for the upcoming model launch.