San Francisco-based Raffi Krikorian, the chief technology officer at Mozilla, which runs the Firefox browser, switched to Chinese AI startup Moonshot’s Kimi K3 for many of his day-to-day activities within days of the new, powerful model’s launch more than a week ago.

“It just seems snappier,” he said of K3, comparing it to the acclaimed and more expensive Claude Fable chatbot from San Francisco company Anthropic. Earlier, he had been using another high-performing Chinese model, Z.ai’s GLM-5.2, for routine tasks such as managing his calendar, documents and email.

Krikorian is one of a growing number of Americans adopting Chinese AI systems, which are gaining ground around the world because they are more affordable and increasingly efficient. U.S. companies like cryptocurrency exchange Coinbase said they’re switching to Chinese AI models to help trim costs.

Their popularity has frustrated some U.S. tech giants, but short of an outright ban, they’re likely to continue to appeal to independent software developers in the U.S. and elsewhere.

American-led restrictions block China from accessing some of the world’s most advanced technologies including cutting-edge AI chips and U.S. Treasury Secretary Scott Bessent has warned more sanctions could be coming to protect American intellectual property.