Stay informed with free updatesSimply sign up to the Artificial intelligence myFT Digest -- delivered directly to your inbox.OpenAI and Google are selling their advanced AI models to Chinese tech giants blacklisted by the Pentagon, exposing a gap in Washington’s efforts to slow Beijing’s AI development.The US companies confirmed to the FT that they have been supplying AI services to Singapore-based subsidiaries of Alibaba, Baidu and Tencent, which the US government has accused of working with Ch...