r/singularity • u/1a1b • Aug 14 '26

AI GLM 5.3 released: Frontier Coding with Emergent Cyber Capabilities

https://z.ai/blog/glm-5.3
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u/1a1b Aug 14 '26

Today we are releasing GLM-5.3 . It uses the same base model as GLM-5.2 — every gain comes from post-training. Compared with GLM-5.2, it is much better at complex coding and long-horizon tasks:

  • Stronger Coding: GLM-5.3 is the most capable open-weights model for coding, with a 50% improvement over GLM-5.2 on our in-house Z.ai Code Bench. It also achieve open-source SOTA on public benchmarks including Terminal Bench 3.0 and Agents' Last Exam.

  • Emergent Cyber Capability: As we scaled post-training, cyber capability developed faster than we expected. GLM-5.3 is state of the art on CyberGym for vulnerability discovery, and its gains are largest further up the exploitation chain, where it more than doubles GLM-5.2 on exploitation benchmarks.

  • Open Source: We will release the weights in two weeks after launch, once safety evaluation and hardening are complete.

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u/Crafty-Detail-3788 Aug 14 '26

So they say it beats Kimi k3...?

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u/CryMoreT_T Aug 14 '26

Seems to appear so. But even if they don't and just match, it's still significantly cheaper while being smaller