U.S. artificial intelligence giant Anthropic's initial public offering (IPO) prospectus reveals a gross profit margin of 85.4% in the first half of 2026, significantly surpassing Chinese AI companies Z.ai (also known as Zhipu AI) at 26.4% and MiniMax at 17.9%. This data highlights the challenges faced by Chinese AI model developers in translating technological advancements into sustainable businesses.