Z.ai Releases GLM-5.3 as an Open-Weight Model
Z.ai has released GLM-5.3 as an open-weight model aimed at agentic coding and cyber defense. Its weights are available on Hugging Face alongside a technical blog.
Z.ai has announced GLM-5.3 as an open-weight release. Developers can download the model weights, run the model in supported environments, and adapt it for their own use cases.
The company positions GLM-5.3 for agentic coding and cyber defense tasks. The weights are hosted on Hugging Face, while Z.ai has published a separate technical blog with additional information about the release.
The available evidence confirms the launch and distribution channels, but does not independently establish detailed performance claims or licensing terms. Those details should be checked against the official model card and documentation.
Source evidence
GLM-5.3 is now open-weight. Our most capable model for...daily.dev · supportingGLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize.
John Paul Fusin - GLM-5.3 is now available as an...facebook.com · supporting## John Paul Fusin's post ### John Paul Fusin 6d · GLM-5.3 is now available as an open-weight model for coding, agentic workflows, and cyber defense. Its weights can be downloaded, run, and customized, with local serving paths listed for SGLang, vLLM, Transformers, and other frameworks. Key features: • Post-training focused on complex coding and long-horizon tasks. • Z ai reports a 50% improvement over GLM-5.2 on its in-house Code Bench. • Official benchmark tables cover Terminal Bench 3.0, DeepSWE, CyberGym, and agentic-task evaluations. • The Hugging Face model card lists English and Chinese support, plus Safetensors and FP8 files. May be a graphic of text that says
Z.ai's Postlinkedin.com · supportingGLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize.
Z.ai "GLM-5.3 is now open-weight. Our most capable ...reddit.com · supportingZ.ai "GLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize.
Z.ai on X: "GLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize. Weights: https://t.co/v1IbWMXxg4 Tech blog: https://t.co/ekQkO83jCv" / Xx.com · supportingLog inSign up ## Post # Z.ai on X: "GLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize. Weights: Tech blog: @Zai_org Z.ai @Zai\_org GLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize. Weights: huggingface.co/zai-org/GLM-5.3 Tech blog: z.ai/blog/glm-5.3 3:04 PM · Aug 28, 20261.4MViews 274 @Zai_org Z.ai @Zai\_org GLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize. Weights: huggingface.co/zai-org/GLM-5.3 Tech blog: z.ai/blog/glm-5.3 3:04 PM · Aug 28, 20261.4MViews 274 @UnslothAI Unsloth AI @UnslothAI [...] 274 @UnslothAI Unsloth AI @UnslothAI Aug 28 Congrats Z ai team, once again another amazing open-source release! 🥰 We're working on GLM-5.3 Unsloth GGUFs for those who can run it l
Z.ai releases GLM-5.3 as open-weight · 268 HN comments | Zelizeli.app · supporting# Z.ai releases GLM-5.3 as open-weight model GLM-5.3 is now open-weight ▲ 780jeudesprits268 HN discussion Z.ai releases GLM-5.3 as open-weight model Z.ai has released GLM-5.3, its most capable model for agentic coding and cyber defense, now available as open weights for download, running, and customization. The model is hosted on Hugging Face, with a tech blog detailing its capabilities. The release has sparked community responses, including Unsloth AI working on GGUF versions for local execution and Baseten planning to host it. Notably, GLM-5.3 has moved away from the MIT license to a semi-non-commercial license, similar to other Chinese AI models. [...] > GLM-5.3 is now open-weight. Our most capable model for agentic coding and cyber defense is now available to download, run, and customize. Read original →HN discussionRSS ## HN discussion 268 1. revolvingthrow GLM 5.3 is probably the sweet spot open weights model if you want to go beyond deepseek flash or the new glm flas