Chinese AI firm Zhipu introduces its flagship GLM-5.3 model, claiming it outperformed Anthropic's Mythos 5 in a pivotal cybersecurity test.
Zhipu's GLM-5.3 scored 84.5% on CyberGym, outperforming Mythos 5 (83.8%), launching publicly in two weeks. The release diversifies vendor options for enterprise vulnerability detection as Chinese AI narrows the cybersecurity gap with Western models.
GLM-5.3 model scored an impressive 84.5% on CyberGym
Aug 15, 2026
02:57 pm
What's the storyChinese artificial intelligence (AI) firm Zhipu, also known as Z.ai, has launched its flagship GLM-5.3 model.
The company claims that the new model has outperformed Anthropic's frontier Mythos 5 in a crucial cybersecurity test.
Zhipu launches GLM-5.3 model as China seeks Mythos-level edge in cyber defence
China's Z.ai says new model nears Anthropic's Mythos 5 in cyber-defence tests
China's Z.ai says new model nears Anthropic's Mythos 5 in cyber-defence tests - The Economic Times
China's Z.ai launches model it says rivals Anthropic's Mythos
Z.ai’s GLM-5.3 Is Closing the Gap With Anthropic in AI Cybersecurity
China’s Z.ai unveils GLM-5.3, claims chart-leading scores
China's AI model approaches Anthropic's Mythos 5 in cyber-defense tests
Zhipu’s new AI model takes aim at OpenAI, Anthropic in China’s race to close the gap
Chinesa Z.ai diz que novo modelo se aproxima do Mythos 5, da Anthropic
Zhipu AI releases GLM-5.3, claims it's the strongest open-weights coding model
Company says GLM-5.3 outperformed leading US systems in cybersecurity tests, beating Anthropic’s Mythos 5 and OpenAI’s GPT-5.6 on…
Zhipu AI's GLM-5.2 matches Anthropic's Mythos in cybersecurity benchmarks at one quarter the cost, narrowing the gap between…
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…
China's Zhipu AI unveiled GLM-5.2, claiming parity with Mythos in bug-finding scenarios, signaling significant progress in…
Zhipu AI's GLM-5.2 model outperforms Anthropic's in cybersecurity tasks, highlighting significant cost advantages for Chinese AI…
Anthropic has made Mythos, a version of its Claude Fable 5 model with cybersecurity safeguards removed, available only to vetted…
