GLM-5.3: The Post-Training Revolution That's Reshaping AI Development How Z.ai Proved That Training Methods Matter More Than Model Size Published: September 9, 2026 | Reading time: 8 minutes The Counterintuitive Breakthrough In August 2026, Z.ai released GLM-5.3, a model that defied the conventional wisdom of AI development. With 743 billion parameters—identical to its predecessor GLM-5.2—the model achieved a 50% improvement in programming capabilities and t...