China’s Z.AI Co. confirmed it’s responsible for the Ox Alpha AI model that swept to the top of online usage charts this weekend, pushing its shares up as much as 8.6%.
The Beijing-based company said it intends to price use of the model, now called GLM-5.3-Flash, at $0.15 per million input tokens and $0.50 per million output tokens, or units of artificial intelligence work. That puts it alongside DeepSeek in the class of low-cost, high-efficiency models that are attracting users away from premium-tier offerings from the likes of Anthropic PBC.