Elon Musk's tweet 'No more AI… SI is better': What does it mean for .ai domains and .si potential?
At 4:40 AM ET on Sunday, October 4, 2026, Elon Musk wrote just three words on his X platform: "No more AI. SI. It's better" — no more artificial intelligence, super intelligence, it's better. Twenty-seven minutes later, when a follower asked if he would change his company's name from SpaceXAI to SpaceXSI, he replied with one sentence: "Yes, we will make that change". He then added three minutes later: "SpaceX is a super intelligence company."
This was not a passing tweet. Within hours, US President Donald Trump reposted a screenshot of the tweet on Truth Social without comment. The tweet was a direct extension of an executive order Trump signed on September 29, 2026, directing federal agencies to replace the terms "artificial intelligence" and "AI" with "Super Intelligence" and "SI" on government websites, policy documents, and press releases.
Background: From xAI to SpaceXAI to SpaceXSI in less than a year
To understand the magnitude of the event, remember the naming sequence: SpaceX acquired xAI in February 2026 in a deal that valued the merged entity at about .25 trillion. In May, Musk announced the dissolution of xAI as a separate company, and on July 6, the division adopted the name SpaceXAI with a new logo. Now, less than three months later, Musk confirms a second change to SpaceXSI — making SpaceXAI one of the shortest-lived names in his company portfolio.
Musk did not specify a timeline, nor did he clarify whether the change is legal or just a brand update, nor the fate of the name Grok or the @SpaceXAI account on X. But history teaches us that Musk's tweets often turn into executive decisions.
What does this mean for the domain market?
1. Is the value of .ai domains collapsing?
The balanced answer: No, not in the near term. The .ai extension is the country code for Anguilla, and its value is built on years of actual adoption: thousands of startups, and record deals like the sale of AI.com for 0 million in 2026. Terms do not change in the market overnight even if they change in government documents.
But the signal is important: when the US President and the richest man in the world adopt a new term on the same day, it is not passing noise. It is a potential start of a long-term linguistic shift.
2. What about the .si extension?
.si is the country code for Slovenia, and it has been available for registration for years at low prices. If the term SI truly takes root, .si could turn into what .ai was years ago: a small country extension that becomes the identity of an entire sector. This is exactly what happened with .ai (Anguilla), .io (British Indian Ocean Territory), and .tv (Tuvalu).
The historical lesson is clear: those who bought good .ai domains before the 2022-2023 wave achieved exceptional returns. But the warning is also clear: for every successful .ai, there are dozens of extensions that were promoted and never took off.
3. How should you act as an investor?
- Do not panic sell strong .ai domains. Demand for them is based on actual use, not a government term.
- Watch, don't bet everything. If you want exposure to the SI hypothesis, a small portion of short and meaningful .si domains is enough as a speculative option — not as a portfolio pillar.
- Use data, not tweets. Compare actual sales prices in the domain sales record before any purchase decision.
- Evaluate what you own first. Use the domain appraisal tool to find out the value of your current domains before considering redistribution.
Conclusion
Musk's tweet is not the end of the .ai era, but it could be the beginning of the .si story. Markets reward those who move early with data, not those who chase noise or panic from it. Follow our blog to stay updated on this story, and subscribe to the newsletter at the bottom of the page to receive our weekly analysis of the domain market.
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