On June 12th, the U.S. Commerce Department issued an export-control directive barring Anthropic from supplying Fable 5 or Mythos 5 to any foreign national, forcing the company to disable both models worldwide. The next day, Beijing-based Z.ai, formerly Zhipu AI, began rolling out GLM-5.2, an open-weight model released under a permissive MIT license, purportedly trained entirely on Huawei Ascend chips with no Nvidia hardware. Within a week, GLM-5.2 climbed to the top of openly available leaderboards, Z.ai's market value passed HK$1 trillion (about US$128 billion), and the most capable model many users outside the U.S. could legally access was a free download from a company on Washington's trade blacklist. GLM-5.2 took first place on Design Arena's human-preference coding board, finishing roughly 10 Elo points ahead of Fable, and ranks as the top openly available model on Artificial Analysis's Intelligence Index v4.1 with a score of 51. On SWE-bench Pro, it scored 62.1, compared to GPT-5.5's 58.6. On Code Arena’s front-end board, it landed second behind Fable 5, and on Artificial Analysis's AA-Briefcase test, Fable 5 led with 1,587 Elo, followed by Opus 4.8 at 1