NewsBite analysis · AI, Programming, Security · New AI Model, Security Vulnerability
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Zhipu's GLM-5.3 Matches Fable 5 On Coding Using Only Post-Training, And Stuns Fans By Unearthing A Vulnerability All The Way From 1981
Zhipu has showcased its latest AI model, GLM-5.3, which matches the coding abilities of Fable 5 through impressive post-training processes. With notable parameter consistency, GLM-5.3 has outperformed previous models by uncovering a significant 1981 vulnerability among 2,436 security findings across numerous open-source projects. This step indicates Zhipu's commitment to improving cybersecurity alongside AI coding capabilities.
MonitorConfidence: HighShort term horizon
Published 14 Aug 2026, 16:20 UTC2 min read
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Summary
TL;DR
- GLM-5.3 matches Fable 5 on coding during post-training.
- Zhipu discovered a 1981 security vulnerability.
- Model achieves a score of 66.9 on DeepSWE, surpassing GLM-5.2.
- Zhipu published findings with 1,097 critical security issues.
- Next model architecture plans include 2x parameters.
Interesting facts
- The 1981 vulnerability had evaded detection for over 26 years.
- Zhipu's post-training led to a significant coding capability upgrade.
- The model's ledger disclosed extensive security vulnerabilities indicating a proactive approach to cybersecurity.