CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins84% CONFIDENCEOverall confidence: 84%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better128 days ago
Z.ai's Hugging Face[6] repository, API and developer release notes all date GLM-5.2 to 16 June 2026 and Epoch[5] AI lists "June 16, 2026". Coding Plan subscribers had it from 13 June (a Saturday); AI Weekly[2] says that launch promised the open weights and API for 16 June, so 13 June was a staged first access, not the full release.Z.ai (Zhipu AI) releases GLM-5.2, an MIT-licensed 753B-parameter flagship built for long-horizon coding with a 1M-token context window, scoring 62.1 on SWE-bench Pro and 81.0 on Terminal Bench 2.1.