Baichuan 4

Baichuan 4 is Baichuan Intelligent Technology’s flagship proprietary language model, with its API opened to developers in mid-2024. Like its predecessor Baichuan 3, the company hasn’t published a parameter count, but it has positioned the model around knowledge retrieval, long-context handling, and Chinese-language generation, and reported leading results on the domestic SuperCLUE benchmark. The family includes a Turbo variant tuned for enterprise deployment and an Air variant described as a mixture-of-experts model built for lower-cost inference, with Baichuan claiming the Turbo model priced at around 80% of GPT-4o’s API cost while offering comparable or better usability on Chinese tasks. It’s available only through Baichuan’s API and chat interface, with context windows reported up to 128K tokens in most deployments. Baichuan 4 competes mainly against other Chinese closed models like those from Alibaba’s Qwen team, Zhipu, and Moonshot rather than against Western frontier labs.