---
format: "aidr-story-markdown/v1"
id: "3220938f1609bd3f8064d0df7786d06c6735156fca60df445a556c9b960ba66e"
canonical_url: "https://aidr.today/3220938f?lang=en"
title: "Z.ai Releases GLM-5.3 Weights for Commercial Use After 2 Week Safety Review"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-08-28T16:47:23.000Z"
category: "Releases"
topics: ["open-source","llm","fine-tuning","huggingface"]
source_urls: ["https://huggingnews.com/ai/update-zai-releases-glm-53-weights-for-commercial-use-after-2-week-safet-3086c206","https://x.com/Zai_org/status/2093354097122455713","https://x.com/ZixuanLi_/status/2093356529772535967","https://x.com/vllm_project/status/2093354756244992383","https://x.com/sgl_project/status/2093355026223874067","https://x.com/kimmonismus/status/2093354978534477956","https://x.com/OpenRouter/status/2093362477706969448","https://x.com/ollama/status/2093356025084797176"]
summary: "Only organizations with more than $10 billion in annual revenue need a security review under Z.ai’s GLM-5.3 license, and only when they offer the model as an external model service. Z.ai said GLM-5.3 is available for download, local deployment, fine-tuning and commercial use. The company said it spent two additional weeks on safety evaluations before publishing the weights because of the model’s advanced cybersecurity capabilities. GLM-5.3 is the largest model in the GLM-5.3 line, with 744B total parameters, 40B active parameters, a 1M context window and 128K max output. The weights were live on Hugging Face, and vLLM, SGLang and OpenRouter said they had day-0 support or availability after the release."
---

# Z\.ai Releases GLM\-5\.3 Weights for Commercial Use After 2 Week Safety Review

> [Open the canonical story](<https://aidr.today/3220938f?lang=en>)

**Published:** 2026-08-28T16:47:23.000Z
**Category:** Releases
**Topics:** open\-source, llm, fine\-tuning, huggingface

## Summary

Only organizations with more than $10 billion in annual revenue need a security review under Z\.ai’s GLM\-5\.3 license, and only when they offer the model as an external model service\. Z\.ai said GLM\-5\.3 is available for download, local deployment, fine\-tuning and commercial use\. The company said it spent two additional weeks on safety evaluations before publishing the weights because of the model’s advanced cybersecurity capabilities\. GLM\-5\.3 is the largest model in the GLM\-5\.3 line, with 744B total parameters, 40B active parameters, a 1M context window and 128K max output\. The weights were live on Hugging Face, and vLLM, SGLang and OpenRouter said they had day\-0 support or availability after the release\.

## Sources

- [Story source](<https://huggingnews.com/ai/update-zai-releases-glm-53-weights-for-commercial-use-after-2-week-safet-3086c206>)
- [Story source](<https://x.com/Zai_org/status/2093354097122455713>)
- [Story source](<https://x.com/ZixuanLi_/status/2093356529772535967>)
- [Supporting source](<https://x.com/vllm_project/status/2093354756244992383>)
- [Supporting source](<https://x.com/sgl_project/status/2093355026223874067>)
- [Supporting source](<https://x.com/kimmonismus/status/2093354978534477956>)
- [Supporting source](<https://x.com/OpenRouter/status/2093362477706969448>)
- [Story source](<https://x.com/ollama/status/2093356025084797176>)