# Zhipu AI releases GLM-5.3, claims it's the strongest open-weights coding model > Source: > Published: 2026-08-14 10:21:34+00:00 # Zhipu AI releases GLM-5.3, claims it's the strongest open-weights coding model By Matthias BastianSource: [The Decoder](https://the-decoder.com) 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](/glossary/training) alone. Trained for cybersecurity, GLM-5.3 helped security teams find 2,436 vulnerabilities across 269 projects. The model weights are set to go open source in two weeks. The article [Zhipu AI releases GLM-5.3, claims it's the strongest open-weights coding model](https://the-decoder.com/zhipu-ai-releases-glm-5-3-claims-its-the-strongest-open-weights-coding-model/) appeared first on [The Decoder](https://the-decoder.com). Get AI news in your inbox Daily digest of what matters in AI.