Zhipu AI released five flagship models in 2026 (GLM-5 through GLM-5.3-Flash by August 26), establishing a ~2-month cadence, but the most recent release was GLM-5.3-FlashX-Legal on October 22 with no announced successor despite founder Tang Jie naming GLM-6.0 without a release date. A related Polymarket shows 91% probability for GLM 5.4+ by year-end, suggesting market confidence in a release within 47 days despite previous failed predictions for September and October deadlines.