The World Artificial Intelligence Conference kicked off in Shanghai on Saturday, July 26, 2025.Nurphoto | Nurphoto | Getty ImagesBEIJING — Chinese companies are making smarter artificial intelligence models that are increasingly cheaper to use, echoing key aspects of DeepSeek's market-shaking breakthrough.Startup Z.ai, formerly known as Zhipu, announced Monday that its new GLM-4.5 AI model would cost less than DeepSeek to use. In contrast to the logic underlying existing AI models, Z.ai said its...