{"slug": "zhipu-launches-flagship-model-glm-5-3-as-china-seeks-mythos-level-edge-in-cyber", "title": "Zhipu launches flagship model GLM-5.3 as China seeks Mythos-level edge in cyber defence", "summary": "Chinese AI firm Zhipu (Z.ai) launched its flagship GLM-5.3 model, claiming it outperformed Anthropic's Mythos 5 and OpenAI's GPT-5.6 Sol on the CyberGym benchmark with an 84.5% success rate, though it trailed on ExploitBench with 54.4% versus Mythos's 78% and GPT-5.6 Sol's 76.5%. The company said the model identified 2,436 vulnerabilities across 269 real-world projects, with 1,097 rated medium to high severity, as China seeks an edge in AI-driven cyber defence.", "body_md": "# Zhipu launches flagship model GLM-5.3 as China seeks Mythos-level edge in cyber defence\n\nCompany says GLM-5.3 outperformed leading US systems in cybersecurity tests, beating Anthropic’s Mythos 5 and OpenAI’s GPT-5.6 on CyberGym\n\nChinese artificial intelligence firm Zhipu, also known as Z.ai, has unveiled its flagship GLM-5.3 model, saying it beat Anthropic’s frontier Mythos 5 model in a key cybersecurity test, as China races to counter Western advances in AI defence.\n\nBeijing-based Zhipu said GLM-5.3 achieved a success rate of 84.5 per cent on CyberGym, a benchmark that measures whether models can identify and validate security flaws from source code.\n\nThat was above Anthropic’s Mythos at 83.8 per cent and OpenAI’s GPT-5.6 Sol at 83.6 per cent, according to Zhipu.\n\nHowever, the Chinese model did not match those foreign systems on ExploitBench, which gauges how far AI models climb the exploitation ladder. Its score of 54.4 per cent trailed Mythos’ 78 per cent and GPT-5.6 Sol’s 76.5 per cent.\n\nZhipu said it had tested the model with security teams in China against real-world codebases, identifying 2,436 vulnerabilities across 269 projects after expert review. Of those, 1,097 were rated medium to high severity, according to the company.", "url": "https://wpnews.pro/news/zhipu-launches-flagship-model-glm-5-3-as-china-seeks-mythos-level-edge-in-cyber", "canonical_source": "https://www.scmp.com/tech/big-tech/article/3364077/zhipu-launches-flagship-model-glm-53-china-seeks-mythos-level-edge-cyber-defence?utm_source=rss_feed", "published_at": "2026-08-14 11:03:30+00:00", "updated_at": "2026-08-14 11:17:47.336926+00:00", "lang": "en", "topics": ["artificial-intelligence", "ai-research", "ai-products"], "entities": ["Zhipu", "Z.ai", "GLM-5.3", "Anthropic", "Mythos 5", "OpenAI", "GPT-5.6 Sol", "CyberGym"], "alternates": {"html": "https://wpnews.pro/news/zhipu-launches-flagship-model-glm-5-3-as-china-seeks-mythos-level-edge-in-cyber", "markdown": "https://wpnews.pro/news/zhipu-launches-flagship-model-glm-5-3-as-china-seeks-mythos-level-edge-in-cyber.md", "text": "https://wpnews.pro/news/zhipu-launches-flagship-model-glm-5-3-as-china-seeks-mythos-level-edge-in-cyber.txt", "jsonld": "https://wpnews.pro/news/zhipu-launches-flagship-model-glm-5-3-as-china-seeks-mythos-level-edge-in-cyber.jsonld"}}