Model identity leak: Agent reveals itself as GLM via special tokens

zainhas · x · 2026-08-22

A security researcher found that when asking the model 'ox-alpha' to complete text containing the GLM-specific special token <sop>, the model refused, stating that completion would reveal its identity. It subsequently claimed to be a GLM model trained by a specific website, denying development by Zhipu AI, Moonshot, or DeepSeek. This indicates the model retains GLM-specific tokenization characteristics, allowing simple prompts to trigger the disclosure of its underlying architecture.

Related event: Forensic Analysis Suggests Anonymous Model ox-alpha Is Zhipu's GLM-5.3-V(12 posts)→

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