Zhipu AI, known internationally as Z.ai, is restricting sign-ups for its new flagship artificial intelligence coding product, as existing users face performance issues amid a computing crunch that continues to beset Chinese AI firms. On Wednesday, the Beijing-based firm announced in a WeChat post that it would limit new sign-ups for its GLM Coding Plan to 20 per cent of existing levels and crack down on “malicious” use. This issue reflected the challenge faced by a growing number of Chinese AI...