Elon Musk’s AI company, called xAI, is seeking to raise up to $1 billion in equity investments. According to a filing with the US Securities and Exchange Commission (SEC), the Tesla and SpaceX CEOs have raised $134.7 million so far for xAI. The $135 million came from four unnamed investors, with the first sale occurring on November 29. The SEC filing noted that xAI will only accept a minimum of $2 million from outside investors. Taking on Sam Altman-run OpenAI’s ChatGPT, Musk said last month that xAI’s AI chatbot Grok has current information in comparison to traditional GPT models. The xAI ‘Grok’ AI assistant is being provided to the users as part of X Premium Plus, which costs $16 per month via web. Grok is designed to answer questions with a bit of wit and has a rebellious streak. “The goal of xAI is to understand the true nature of the universe,” according to the website.