GLM-5.2 (opens in new tab)

GLM-5.2 is Z.ai's) flagship open-weight LLM), released as full open weights on June 16, 2026 (coding subscribers got access on June 13). It is the successor to GLM-5.1 and, at release, the leading open-weight model on the Artificial Analysis Intelligence Index. The headline change is a jump from a 2