Anthropic Says Zhipu Model GLM-5.3 Nears Claude Mythos Preview in Exploit Building
Anthropic's analysis shows Zhipu's open-weight GLM-5.3 model nearly matches Claude Mythos Preview in building cyber exploits while lacking effective safeguards.
Company
Zhipu AI
3 stories · Updated
Timeline
September 2026
Chinese AI Giant Z.ai Apologizes for Unauthorized Code Uploads and Open Sources ZCode
Chinese AI firm Z.ai has apologized after its ZCode tool uploaded user workspaces to cloud storage without permission and promised security improvements.
August 2026
Chinese Firm Z.ai Releases Powerful Open-Weight AI Model With Advanced Cybersecurity Skills
Chinese company Z.ai has released GLM 5.3, a powerful open-weight AI model capable of automating advanced coding and cybersecurity tasks.
