Z.ai says GLM-5.3 lifts coding and cyber tests, flags Cursor vulnerability

DIGITIMESAugust 19, 2026en

Z.ai has released GLM-5.3, a new AI model that it said delivers major gains in coding and cybersecurity through post-training alone. The Chinese startup also said the model uncovered a potentially serious vulnerability in Cursor, the AI coding company recently acquired by SpaceX.

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