Zhipu AI releases GLM-5.3, claims it's the strongest open-weights coding model

Zhipu AI has released GLM-5.3, a model that, according to its own benchmarks, is the most powerful open-weights coding model, with a 50 percent improvement over its predecessor through post-training alone. Trained for cybersecurity, GLM-5.3 helped security teams find 2,436 vulnerabilities across…