According to online reports, Musk posted on the X platform that he would use Grok 3.5 (perhaps called Grok 4) with advanced reasoning capabilities to rewrite the entire human knowledge corpus, add missing information and remove errors, and then retrain because there is too much garbage in any basic model trained with uncorrected data. In response, CZ responded that a lot of knowledge involves history and opinions, both of which have multiple versions and are subject to heated debate, which is why many countries/cultures build artificial intelligence models independently.