Z AI

The gap between open-source and proprietary AI models has narrowed from nearly 10 months in December 2024 to just 2–3.5 months as of early 2025, according to an analysis of the open-source Pareto fron…

Z AI's GLM-5.2 achieved the highest score of 51 on the Artificial Analysis Intelligence Index, becoming the top-performing open-weight model. The model features a 1 million token context window and is…