GLM-5.3 leaks on Bing before Zhipu says a word

Zhipu's next-gen model GLM-5.3 appears to have leaked early. A Bing search result briefly indexed the ZCode page as "GLM-5.3 Official Harness." ZCode is Zhipu's coding tool for GLM, handling planning, writing code, reviewing, and executing development tasks.

Open the official site now, though, and the page still reads "GLM-5.2 Official Harness." Zhipu's release history, developer docs, and API list only go up to GLM-5.2 — no GLM-5.3 in sight.

All that's confirmed so far is that "GLM-5.3" was at some point in the search index for the ZCode page. Could be a test title or an early config leak.

Yesterday, Zhipu's global head of Z.ai, Zixuan Li, publicly asked users whether GLM-5.2 is still enough given the flood of new models. Sounds like a classic pre-launch tease.