Journalism begins where hype ends

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The rise of powerful AI will be either the best, or the worst thing, ever to happen to humanity. We do not yet know which."

—Stephen Hawking

China’s Zhipu AI Unveils GLM-5.3 Frontier Model; Claims to Match Mythos 5 on Cyber Benchmarks

Official logo of Z.ai’s newly launched GLM-5.3 flagship model.

China-based Zhipu AI (Z.ai) has launched its latest flagship open-weight model GLM-5.3, claiming significant improvements in coding, long-horizon tasks and cybersecurity over its predecessor, along with the discovery of thousands of real-world software vulnerabilities.