Microsoft has quietly developed a large artificial intelligence business in China, even as tensions between Washington and Beijing intensify over access to advanced AI technology. According to people familiar with the matter, Chinese companies have continued to buy Microsoft AI products and cloud services in significant volume, with much of that demand tied to OpenAI models distributed through Microsoft.
ByteDance, the Chinese internet and social media company, has been Microsoft’s biggest AI customer in recent years, the people said. The company has largely used OpenAI models and is on track to spend more than $1 billion a year on Microsoft AI and cloud offerings, they said. The figures were shared by people who asked not to be identified because the details are private.
The sales point to a business relationship that has endured despite the broader strategic rivalry between the US and China. Governments in both countries have sharpened scrutiny of AI systems, semiconductors and cloud infrastructure, but Chinese firms still appear to be finding ways to tap into Western AI tools through commercial channels.
Microsoft’s role in that market is notable because the company is one of OpenAI’s main commercial partners and has integrated OpenAI technology into its own products and services. That gives Microsoft a channel to sell AI capabilities to customers outside the United States, including in China, where demand for generative AI tools remains strong.
For Microsoft, the business also highlights the continued appeal of frontier AI models to Chinese companies that want access to some of the most advanced systems available. While the source material does not detail the specific uses ByteDance or other customers are making of the models, the scale of spending suggests that AI services are becoming a meaningful line item for large Chinese technology firms.
The development comes as the United States and China continue to compete for leadership in artificial intelligence. US officials have raised concerns about advanced technology reaching Chinese firms, while Chinese companies are under pressure to accelerate their own AI efforts. In that environment, Microsoft’s sales underscore how commercial demand can persist even amid geopolitical friction.
The source material does not indicate how many other Chinese customers Microsoft has, or whether the company expects further growth from the region. But the reported spending by ByteDance alone suggests that Microsoft’s AI and cloud business in China has reached a substantial scale.
The relationship also reflects the broader economics of AI adoption. Large companies are increasingly spending heavily on model access, cloud computing and related infrastructure as they race to build AI features into consumer and enterprise products. For Microsoft, that trend appears to be translating into meaningful revenue from one of the world’s most closely watched technology markets.
Even with heightened political risk, the reported figures show that the commercial market for AI remains global. For Microsoft, China has emerged as one of the clearest examples of that reality.