China’s Z.ai claims it can match Mythos on cybersecurity

# China’s Z.ai claims it can match Mythos on cybersecurity Source: [https://www.theverge.com/ai-artificial-intelligence/958804/chinas-z-ai-glm-52-mythos-cybersecurity](https://www.theverge.com/ai-artificial-intelligence/958804/chinas-z-ai-glm-52-mythos-cybersecurity) [Skip to main content](https://www.theverge.com/ai-artificial-intelligence/958804/chinas-z-ai-glm-52-mythos-cybersecurity#content) GLM\-5\.2 can’t match Anthropic or OpenAI on general tasks, but the gap has closed on finding bugs\. GLM\-5\.2 can’t match Anthropic or OpenAI on general tasks, but the gap has closed on finding bugs\. by Jun 28, 2026, 9:42 PM UTC   Image: Cath Virginia / The Verge, Getty Images [](https://www.theverge.com/authors/terrence-obrien) Terrence O'Brien is the Verge’s weekend editor\. He’s covered the tech industry for over 18 years and knows a thing or two about synths\. China’s Zhipu AI \([Z\.ai](http://z.ai/)\) released its open\-weight GLM\-5\.2, and some researchers have claimed that it[matches Mythos](https://www.wsj.com/tech/ai/chinese-ai-anthropic-mythos-cybersecurity-574b02c2?st=FRKgap&reflink=desktopwebshare_permalink)in certain bug\-finding and cybersecurity scenarios\. While GLM lags behind models from[Anthropic](https://www.theverge.com/ai-artificial-intelligence/957845/openai-gpt-5-6-trump-administration-ai-preview)and OpenAI in other, more general tasks, it seems that China has dramatically reduced the gap in the capabilities between its models and those of the US\. 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](https://www.theverge.com/ai-artificial-intelligence/958458/anthropic-mythos-5-is-back-trump-negotiations)and Fable, as well as the hardware necessary 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](https://www.theverge.com/ai-artificial-intelligence/957845/openai-gpt-5-6-trump-administration-ai-preview), which has also raised concerns about its potential for misuse and has limited access to it\. Because GLM is an open\-weight model, it can be[downloaded and run by anyone](https://www.ibtimes.com/chinese-open-weight-ai-model-raises-cybersecurity-worries-over-advanced-capabilities-3804610)on readily available hardware\. That gives it great flexibility and allows power users deep access, but it also makes it ripe for abuse by bad actors who can run it with little oversight\. **Follow topics and authors**from this story to see more like this in your personalized homepage feed and to receive email updates\. - Terrence O'Brien ## The Verge Daily A free daily digest of the news that matters most\.