Advertisement Elon Musk is once again shifting capital between two of his companies. As the Wall Street Journal reports, citing people involved in the transactions, SpaceX is to invest two billion US dollars in xAI. In total, the AI company, which also operates the social media platform X, is to be provided with five billion US dollars this year. Anzeige This is a new financing round, which was launched in June 2025, according to the report. In the previous round at the end of 2024, xAI raised six billion. Among other things, this was to be used to upgrade xAI's supercomputer "Colossus" in Memphis, USA, to 200,000 H100 GPUs from Nvidia. Colossus is the central computer on which xAI's artificial intelligence "Grok" is trained. The report does not reveal what expenditure is planned with the fresh money. SpaceX is highly liquid The investments are to come from SpaceX's cash assets, which are reported to be three billion US dollars to date. As NASA's most important partner, the space company has constant income from government contracts. It also operates Starlink, the largest satellite network for internet access from space. Just this week, xAI unveiled version 4 of Grok, which is designed to provide powerful reasoning. However, when examining the sequence of these conclusions, aka reasoning chains, it was noticed that they are often based on statements by Elon Musk. In general, many of the sources Grok cites come from what used to be Twitter. Shortly before, the language model available on X under @Grok had attracted attention due to anti-Semitic statements and was taken offline on X for a few days. However, Grok is also available on its website and as an app. A subscription is required for all functions of the new Grok 4, which costs up to 300 US dollars. Read also