Elon Musk’s xAI raises US$6 billion from investors including Sequoia, Andreessen Horowitz to challenge OpenAI
- The Series B round comes less than a year after xAI’s debut and marks one of the bigger investments in the field
- Musk had been an early backer of OpenAI, but he later withdrew his support and has advocated caution because of the technology’s potential dangers

Elon Musk’s artificial intelligence (AI) start-up xAI has raised US$6 billion to accelerate its challenge to his former allies at OpenAI.
Musk launched a rival to OpenAI’s ChatGPT in November, called Grok, which was trained on and integrated into X.com, the social network formerly known as Twitter. That has so far been the most visible product of xAI’s work, which is led by executives with prior experience at Alphabet’s DeepMind, Microsoft and Tesla.
The company intends to use the funds to bring its first products to market, build advanced infrastructure and accelerate the development of future technologies, it said in the blog.
Its pre-money valuation was US$18 billion, Musk said in a post on X. Marquee venture capital names including Sequoia Capital and Andreessen Horowitz backed the fundraising, which is one of the largest so far in the industry.
