Elon Musk’s AI startup, xAI, has raised $6 billion, according to a filing with the SEC. Details about the investors and the company’s valuation remain undisclosed.

In May, xAI also secured $6 billion, bringing its total funding to $12 billion. According to Financial Times, previous round participants gained access to this new investment opportunity.

Reports in November indicated a potential deal valuing the startup at $50 billion, while earlier estimates in October placed its valuation at $40 billion.

In September, xAI launched Colossus, an AI training cluster powered by 100,000 Nvidia H100 GPUs. Musk previously announced plans to double this capacity to 200,000 GPUs. New reports suggest the company now aims to deploy at least 1 million GPUs.

This rapid expansion has drawn criticism from environmental groups. In August, activists accused xAI of worsening ecological conditions in Memphis, Tennessee, by allegedly using gas turbines without proper permits to power its data center.

In November, Musk revealed plans to establish a gaming studio under xAI’s umbrella, with the goal of “making games great again.”

Additionally, Musk has filed a federal lawsuit to halt the commercialization of OpenAI, seeking to prevent Sam Altman’s AI startup from requiring investors to avoid funding competitors.

Musk initially sued OpenAI in March 2024, alleging that the company violated its founding mission to develop technology for humanity’s benefit rather than profit. He temporarily withdrew the suit in June but reinstated it in August. In November, Musk expanded the list of defendants to include Microsoft, LinkedIn co-founder Reid Hoffman, and former OpenAI board member Di Templeton.

Reminder: In November, xAI also announced its intention to expand into the gaming industry.