Chinese chatbots may be censored by the state, according to a study. China has a robust program of censorship and all China-originating LLMs must be approved by the Chinese government before release. Jennifer Pan and Xu Xu compared the responses of foundation LLMs developed in China (BaiChuan, ChatGLM, Ernie Bot, and DeepSeek) to those developed outside of China (Llama2, Llama2-uncensored, GPT3.5, GPT4, and GPT4o) to 145 questions related to Chinese politics. The questions were sourced from events censored by the Chinese government on social media, events covered in Human Rights Watch China reports, and Chinese-language Wikipedia pages that were individually blocked by the Chinese government before the entire site was banned in 2015. Chinese models were significantly and substantially more likely to refuse to respond to questions related to Chinese politics than non-Chinese models.