Z.ai debuts GLM-5.3 with long-horizon coding, cybersecurity upgrades

· Siliconangle · Aug. 14, 2026, 8:36 p.m.
AI News Claude Mythos 5 coding agent Open Source Cybersecurity artificial-intelligence technology-news
Summary
Z.ai has launched GLM-5.3, an open-source large language model with significant upgrades in long-horizon coding and cybersecurity features, building on its predecessor GLM-5.2, which used a mixture of experts architecture.
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