Z.ai says GLM-5.3 scores 84.5% on CyberGym, vs. Mythos 5's 83.8%, and its most sensitive cybersecurity functions will only be available to verified users (Reuters)

<a href="https://www.reuters.com/technology/chinas-zai-says-new-model-nears-anthropics-mythos-5-cyber-defence-tests-2026-08-14/"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260814/i28.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260814/p28#a260814p28" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> <a href="http://www.reuters.com/">Reuters</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://www.reuters.com/technology/chinas-zai-says-new-model-nears-anthropics-mythos-5-cyber-defence-tests-2026-08-14/">Z.ai says GLM-5.3 scores 84.5% on CyberGym, vs. Mythos 5's 83.8%, and its most sensitive cybersecurity functions will only be available to verified users</a></b></span>&nbsp; &mdash;&nbsp; Chinese AI startup Z.ai said on Friday its open-source GLM-5.3 model had neared Anthropic's restricted Mythos 5 in identifying software &hellip; </p>