Chinese AI models now power 58% of US business API traffic

The shift to Chinese models is not a niche experiment but a mainstream business decision. OpenRouter, a developer-facing platform, shows Chinese models taking 58% of US weekly traffic, and this growth is driven by cost—Chinese open-weights models often undercut US rivals by factors of three to ten. Companies like Cursor, Airbnb, and DoorDash are integrating these models into their daily operations, sometimes without user awareness, as Cursor's initial denial of using Kimi showed.

The regulatory and security concerns are real. US lawmakers have begun questioning companies like Airbnb, Anysphere, and DoorDash about their use of Chinese models, focusing on data handling and potential espionage risks. While companies like Airbnb's CEO Brian Chesky argue that open-weights models do not access data, the debate highlights that performance and cost alone do not resolve the security and trust questions. This issue will likely intensify as adoption spreads beyond tech circles.