GLM-5.3
GLM-5.3 is Z.AI’s Frontier coding flagship from August 14, 2026, with 744 billion total and 40 billion active parameters. All improvements over GLM-5.2 stem from post-training: Terminal-Bench 3.0 rose from 4.6 to 28.3 percent, ExploitBench more than doubled. Reasoning is mandatorily active, context one million tokens. Weights available since 08/28/2026 under the bespoke GLM-5.3 license (MIT-like, $10B MaaS security review gate); Chinese cloud infrastructure.