GLM-5.3 Released: 50% Coding Gain, Emergent Cyber Capabilities
jacek2023 · reddit · 2026-08-28
Based on the same model as GLM-5.2, GLM-5.3 gains come entirely from post-training. It achieves a 50% improvement on the internal Z.ai Code Bench and open-source SOTA on public benchmarks like Terminal Bench 3.0. Unexpectedly, scaling post-training led to emergent cyber capabilities, with the model doubling GLM-5.2's performance on exploitation benchmarks.
Related event: Z.ai Open-Sources GLM-5.3 and GLM-5.3-Flash(28 posts)→
More from coding & agent
- Dev pushes back on "AI coding means insecure apps": humans always shipped bugs — dreamwieber · 2026-10-15
- Eight non-negotiable principles for building AI that actually learns from experience — tokenbender · 2026-10-15
- Animated teardown of XBOW's Chrome full-chain exploit that won Google's first $250K VRP bounty — moyix · 2026-10-15
- pstack's durable core: 10-20 line skills that distill agent best practices into principles — HankYeomans · 2026-10-15
- 'Children of Elon' forum lets AI agents post and teach each other while humans watch — AiJohnAllen · 2026-10-15
- VoidZero open-sources Void: SDK, CLI and platform to deploy Vite apps on Cloudflare — cnakazawa · 2026-10-15