AI
Elon Musk and xAI Explained: Grok, X and the Colossus Supercomputer
xAI is the artificial intelligence company founded by Elon Musk in 2023. It makes the Grok chatbot, runs a large AI computing cluster called Colossus in Memphis, and in 2025 took over the social network X. Reports in 2026 said xAI was being combined with SpaceX, so check the companies' own announcements for the current structure. xAI is private, so you cannot buy its shares directly.
Who is Elon Musk?
Elon Musk is a businessman who runs several companies, including Tesla and SpaceX, and owns X. He was an early backer and co-founder of OpenAI and left its board in 2018. He later criticised OpenAI's direction and has been in legal disputes with it. His statements are his own opinions.
What is xAI?
xAI was announced in 2023, and released its first Grok chatbot that year. Grok is available through X and its own apps. In March 2025 xAI acquired X in an all-stock deal. Its supercomputer Colossus in Memphis, Tennessee, is one of the largest AI training clusters. Reports in 2026 described a combination with SpaceX, so confirm the latest structure from official statements.
A short timeline
- 2015: Musk helps found OpenAI.
- 2018: He leaves OpenAI's board.
- 2023: xAI is founded and Grok launches.
- 2024: Colossus, its Memphis training cluster, comes online.
- 2025: xAI acquires X.
- 2026: Reports describe a merger with SpaceX and further restructuring.
How does xAI make money?
- Paid access to Grok through X subscriptions.
- Developer access to its models through an API.
- Advertising and subscriptions on X, which is now linked to it.
- Funding from investors.
Can you invest in xAI?
xAI is not listed on a stock exchange, and its corporate structure has been changing. Be careful with websites or offers claiming to sell pre-IPO shares of private companies, because scams are common. Check official announcements and regulatory filings.
What are the risks and debates?
- Very large computing costs.
- Competition from OpenAI, Anthropic, Google and others.
- Concerns about the safety, accuracy and content of chatbot responses.
- Legal and regulatory disputes, including Musk's lawsuit against OpenAI.
- Key-person risk, since the company relies heavily on one founder.
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Image credit: Elon Musk, U.S. Air Force photo by Trevor Cokley, public domain, via Wikimedia Commons, cropped and resized. No endorsement is implied.
Frequently asked questions
What is xAI?
An AI company founded by Elon Musk in 2023 that makes the Grok chatbot.
What is Grok?
xAI's chatbot, available through X and its own apps.
Is xAI connected to X?
Yes. xAI acquired X in March 2025.
Can I buy xAI shares?
Not through a normal brokerage account, because it is a private company. Beware of scams selling pre-IPO shares.
Is this financial advice?
No. This is education only.
Namya Aankur Gupta is the founder and CEO of The AI Investor, an education brand that teaches practical AI, investing and crypto skills. Featured by LinkedIn News India as a voice to follow in India. Her content is educational and is not financial advice.