Chinese AI lab Z.ai has unveiled GLM-4.5 and GLM-4.5-Air, two new open-source general language models touted as their flagship offerings. These models are hybrid reasoning systems, featuring both a “thinking” mode for complex tasks and a quicker “non-thinking” mode for instant responses.
Z.ai emphasizes the models’ agentic capabilities, allowing them to perform more autonomous actions. The company claims that these models surpass all other open-source models globally in performance.
The release underscores China’s growing presence in the AI landscape and the push towards accessible AI technology through open-source initiatives. The hybrid reasoning approach and agentic capabilities signify advancements in AI’s ability to handle diverse tasks with varying levels of complexity. This move could foster innovation and collaboration within the AI community.








