Grok is the AI chatbot built into X and available at grok.com. It was created by xAI, the AI company Elon Musk founded in 2023.
But the ownership chain has changed fast: xAI bought X in 2025, SpaceX bought xAI in February 2026, SpaceX went public in June 2026, and xAI now operates under the name SpaceXAI.
This guide explains who owns Grok today in plain English, how the ownership chain works, how much Elon Musk controls, who else holds a stake, a full timeline from 2023 to November 2026, how Grok relates to X and Cursor, and whether you can invest in Grok. Every key fact links to its source.
- Grok is made by xAI, now trading as SpaceXAI (renamed July 2026).
- SpaceXAI is a wholly owned subsidiary of SpaceX, after an all-stock acquisition announced February 2, 2026.
- SpaceX is public on Nasdaq as SPCX since June 12, 2026.
- Elon Musk controls it: about 42% of SpaceX’s shares and about 82% of the voting power through super-voting Class B shares.
- X (Twitter) and Cursor are also SpaceXAI subsidiaries.
- So, who owns Grok? SpaceX shareholders, with Elon Musk in control.
The Short Answer
Grok belongs to SpaceXAI (formerly xAI), which belongs to SpaceX, which is a public company controlled by Elon Musk.
- Grok is the product: chatbot, app, API and image/video models.
- SpaceXAI (formerly xAI) builds and runs Grok.
- SpaceX owns 100% of SpaceXAI.
- SpaceX shareholders own SpaceX, and Musk holds the controlling vote.
The Ownership Chain Explained
| Level | Company | What it owns |
|---|---|---|
| Top | SpaceX (Nasdaq: SPCX) | Rockets, Starlink and SpaceXAI |
| AI division | SpaceXAI LLC (formerly xAI) | Grok, X Corp. and Cursor |
| Products | Grok, X, Cursor | The chatbot, the social network and the AI code editor |
In May 2026, Musk said xAI “would cease to exist as a separate company”, with Grok and X becoming SpaceX’s AI division. The rename to SpaceXAI followed in July 2026.
How Much Does Elon Musk Own?
| Measure | Musk’s share | Source |
|---|---|---|
| SpaceX equity (shares) | About 42% | SpaceX IPO reporting, June 2026 |
| SpaceX voting power | About 82% | Class B shares with 10 votes each |
Owning under half the shares but over 80% of the votes means Musk effectively decides what happens at SpaceX, and therefore at Grok and X. No outside shareholder can outvote him.
Who Else Has a Stake
Before the SpaceX deal, xAI raised money from big investors. When SpaceX bought xAI in an all-stock deal, those investors received SpaceX shares. Reported xAI backers include:
- Series E (January 2026, about $20 billion): Valor Equity Partners, StepStone, Fidelity, Qatar Investment Authority, MGX and Baron Capital, with Nvidia and Cisco as strategic investors.
- Earlier rounds: long-time Musk backers such as Valor and Sequoia, and Gulf sovereign funds.
- Public shareholders: since the June 2026 IPO, anyone can own SpaceX shares through a brokerage.
Exact percentages for these holders are in SpaceX’s SEC filings; reported figures vary, so check the filings if you need precise numbers.
Timeline: From xAI to SpaceXAI
| Date | Event |
|---|---|
| March 9, 2023 | Elon Musk founds xAI |
| November 2023 | Grok is unveiled, first for X Premium subscribers |
| March 2024 | Grok-1 model weights released as open source |
| March 28, 2025 | xAI acquires X Corp. (the former Twitter), forming X.AI Holdings |
| January 2026 | xAI raises about $20 billion in a Series E round |
| February 2, 2026 | SpaceX acquires xAI in an all-stock deal; combined company valued at over $1 trillion |
| April 2026 | Michael Nicolls, previously a Starlink vice president, becomes president of xAI |
| June 12, 2026 | SpaceX lists on Nasdaq as SPCX at $135 a share |
| July 2026 | xAI renamed SpaceXAI |
| August 14, 2026 | SpaceX completes its $60 billion acquisition of Cursor (Anysphere), placed under SpaceXAI |
Valuations reported for xAI at the time of the SpaceX deal differ between sources, so we have left out a single figure.
Grok and X: Same Company, Separate Accounts
X and Grok are owned by the same company, and Grok is built into X. But they are still separate products with separate accounts:
- You can use Grok at grok.com or in the Grok app without an X account (sign in with email, Google or Apple).
- Deleting your X account does not delete your Grok account, and vice versa. See how to delete Grok history and your account.
- X Premium and SuperGrok are separate subscriptions with different billing. Our Is Grok free guide explains both.
- Public X posts can be used to train Grok unless you opt out in X’s privacy settings.
Who Runs Grok
| Person | Role |
|---|---|
| Elon Musk | Founder of xAI, CEO of SpaceX, controlling shareholder. The only xAI co-founder still at the company. |
| Michael Nicolls | President of xAI/SpaceXAI since April 2026 |
Most of xAI’s original co-founding team has left; the last other co-founder departed in March 2026.
What Grok Includes Today
“Grok” is now a family of products, all run by SpaceXAI:
| Product | What it is | Where |
|---|---|---|
| Grok chatbot | The main AI assistant for chat, search, writing and coding | grok.com, Grok app for iPhone and Android |
| Grok in X | The same assistant built into the X app and x.com | X |
| Grok Imagine | Image and short video generation | Grok app, grok.com and API. See our Grok Imagine video guide |
| xAI API | Grok models for developers, billed per token | xAI console |
| SuperGrok and X Premium | Paid plans with higher limits and newer models | Grok and X billing |
The free plan still exists with limits. Prices and limits for each plan are in our Is Grok free guide.
Controversies and Regulation
Ownership also shapes how Grok is moderated.
Grok has faced several public controversies, including antisemitic outputs in July 2025 and, from December 2025, misuse of its image tools to make non-consensual fake images of real people, which drew attention from regulators in several countries.
xAI has responded with policy and filter changes, and its API now marks generated text with a watermark by default.
For users, the practical point is simple: Grok’s rules are set by SpaceXAI under Musk’s control, and they can change quickly. Check the current terms before using Grok for work or sensitive content.
Can You Buy Grok Stock?
There is no separate “Grok” or “xAI” stock. Since SpaceX owns SpaceXAI outright, the only public way to own a piece of Grok is to buy SpaceX shares (SPCX) on Nasdaq through a brokerage that offers US stocks.
- SPCX also includes rockets, Starlink, X and Cursor, so it is not a pure AI investment.
- Be very careful of crypto tokens or “pre-IPO xAI shares” using the Grok name. They are not issued by xAI or SpaceX.
- This article is information only, not investment advice. Speak to a licensed adviser before investing.
Who Owns Grok vs ChatGPT, Gemini and Claude
| Chatbot | Made by | Owned by | Public? |
|---|---|---|---|
| Grok | SpaceXAI (xAI) | SpaceX, controlled by Elon Musk | Yes, via SpaceX (SPCX) |
| ChatGPT | OpenAI | OpenAI Group PBC, controlled by the OpenAI Foundation | No |
| Gemini | Google DeepMind | Alphabet | Yes (GOOGL) |
| Claude | Anthropic | Anthropic PBC | IPO scheduled for November 2026, per reports |
More detail: who owns ChatGPT and our ChatGPT vs Claude vs Gemini vs Grok comparison.
What the Ownership Means for Grok Users
- Your data: Grok data is handled by xAI/SpaceXAI under the xAI privacy policy. It is a US company.
- Tight X integration: because X and Grok share an owner, expect Grok features to keep showing up across X.
- Big compute plans: SpaceX says it wants to build space-based AI data centres powered by satellites, which could shape Grok’s future capacity.
- Developer tools: with Cursor in the same group, Grok models are likely to appear more in coding tools. Developers can already call Grok through the xAI API; see our Grok API Python tutorial.
My Take
The simple answer is “Elon Musk owns Grok”, and in practice that is right: he controls SpaceX’s vote, and SpaceX owns the company that makes Grok. The more accurate answer is that Grok is now part of a public company, so SpaceX shareholders own it collectively, while Musk holds the decisive votes.
The xAI name is fading. Expect to see “SpaceXAI” more often in news and legal pages from now on.
FAQ
Who owns Grok AI?
SpaceXAI (formerly xAI), a wholly owned subsidiary of SpaceX. Elon Musk controls SpaceX with about 82% of the voting power.
Is Grok owned by Elon Musk?
Effectively yes. He founded xAI and controls SpaceX, which owns it, though public shareholders also own part of SpaceX.
Is Grok owned by X (Twitter)?
No, it is the other way round. xAI bought X in March 2025, and both now sit under SpaceXAI.
Is xAI part of SpaceX?
Yes. SpaceX acquired xAI on February 2, 2026, and xAI was renamed SpaceXAI in July 2026.
Can I buy shares in Grok or xAI?
Not directly. You can buy SpaceX (SPCX) shares on Nasdaq, which include SpaceXAI. This is not investment advice.
Who created Grok?
Grok was created by xAI, founded by Elon Musk in March 2023. It launched in November 2023.
Does SpaceX own Cursor?
Yes. SpaceX completed its $60 billion acquisition of Cursor in August 2026 and placed it under SpaceXAI.
