China's Z.ai launches model it says rivals Anthropic's Mythos

Artificial intelligenceGLM-5.3 boasts advanced performance on coding and security frontsChinese Z.ai is known for developing an AI model that defended against a cyberattack by OpenAI models. (Photo by Tomoko Wakasugi)TOMOKO WAKASUGIAugust 15, 2026 06:49 JSTSHANGHAI -- Chinese AI startup Z.ai has released a model with e

China's Z.ai says new model nears Anthropic's Mythos 5 in cyber-defence tests  Dawn

China's Z.ai says new model nears Anthropic's Mythos 5 in cyber-defence tests  Reuters

BEIJING: Chinese AI startup Z.ai said on Friday (Aug 14) its open-source GLM-5.3 model had neared Anthropic's restricted Mythos 5 in identifying software vulnerabilities, bolstering the credentials of a Chinese AI challenger gaining traction among Western developers.Z.ai said GLM-5.3 scored 84.5 per cent on CyberGym, a