Z.ai Releases Flagship GLM-5.3 Open Weights with Hyperscaler Commercial Restrictions
Chinese AI laboratory Z.ai has released the open weights for its flagship GLM-5.3 model on Hugging Face, introducing a tiered licensing structure that places specific restrictions on commercial hyperscalers. The release follows a two-week safety evaluation period that began after the model's initial API launch earlier this month. While previous models in the family, including GLM-5.2 and GLM-5.3-Flash, were distributed under the permissive MIT license, the flagship release introduces the custom
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