Frontier Radar #4: China has caught up, so what's left of the Western AI lead?

Recent developments in China, specifically the performance of Kimi K3 and GLM-5.3, indicate that domestic AI models are nearing the capabilities of top Western counterparts. While some observers attribute this rapid progress to the practice of distilling knowledge from existing powerful models, the shift suggests that technical leads in the industry are becoming increasingly difficult to maintain. This trend signals a transition toward a more competitive global landscape where the advantage of pioneering foundational technology is no longer a permanent barrier for challengers.