China’s Zhipu AI (Z.AI) released its open-weight GLM-5.2, and some researchers have claimed that it matches Mythos in some bug-finding and cybersecurity scenarios. While GLMs lag behind Anthropic and OpenAI’s models in other common tasks, China appears to have dramatically narrowed the gap in capabilities between its models and the US’s models.
This level of advancement is particularly concerning to the US government, which has worked to restrict China’s access to powerful models like Anthropic’s Mythos and Fable, as well as the hardware needed to train and run them. The Trump administration views Mythos and other advanced AI models capable of identifying vulnerabilities as serious national security threats. Recently, OpenAI unveiled GPT-5.6, which has also raised concerns about its potential for misuse and limited accessibility.
Because GLM is an open-weight model, anyone can download and run it on readily available hardware. This gives it great flexibility and allows power users deep access, but it also makes it open to abuse by bad actors who can run it with little oversight.
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