GLM-5.3 open-weight release: 50% coding boost, emergent cyber capabilities
gharik · x · 2026-08-29
Z.ai released GLM-5.3 as an open-weight model, improving upon GLM-5.2 architecture via post-training.
- Coding: Achieved a 50% improvement on the internal Z.ai Code Bench and open-source SOTA on public benchmarks like Terminal Bench 3.0.
- Cybersecurity: Demonstrated emergent capabilities in vulnerability discovery, doubling GLM-5.2's performance on exploitation benchmarks.
- Specs: Features a 1M-token context window, optimized for complex software engineering and long-horizon agent tasks.
Related event: Z.ai Open-Sources GLM-5.3 and GLM-5.3-Flash(28 posts)→
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