GLM-5.3 model improves coding capabilities by 50% through post-training scaling

Chinese AI company Z.ai (Zhipu) officially released the GLM-5.3 model, improving upon the previous generation through intensive post-training scaling without retraining the model base. GLM-5.3 demonstrates 50% improvement in coding capabilities and ranks first on open-source benchmarks including Terminal Bench 3.0 and Agents' Last Exam. The model achieves capabilities comparable to Claude Opus 4.8 on complex programming tasks while using tokens more efficiently. Tech company Honor integrated GLM-5.3 into its YOYO Claw assistant, demonstrating rapid commercial adoption of the new model in consumer products.