GLM-5.3 scores 84.5pc on CyberGym, ahead of Anthropic’s Mythos 5 and OpenAI’s GPT-5.6 Sol.
Chinese AI company Z.ai has unveiled its latest open-weights model – GLM-5.3 – whose performance, it says, rivals that of OpenAI and Anthropic newest frontier launches – marking the latest in the ever-escalating battle between US and Chinese companies for AI dominance.
The new model makes a significant leap in capability compared to its predecessor GLM-5.2, which launched just months ago in June.
GLM-5.3 is “much better” at complex coding and long-horizon tasks, Z.ai said, boasting a 50pc improvement from the older version in its in-house code benchmarks.
The company plans to release GLM-5.3’s weights in two weeks’ time, after wrapping up safety evaluation and hardening.
