.si vs .ai
Which domain extension should you choose? Here's how the two compare — and when each one is the better pick.
Side by side
| .si | .ai | |
|---|---|---|
| What it is | Slovenia's ccTLD | Anguilla's ccTLD |
| Runs the registry | Academic and Research Network of Slovenia (ARNES) | Government of Anguilla |
| In the root zone since | Early ccTLD (date not recorded) | Early ccTLD (date not recorded) |
| Popular meaning | superintelligence — the AI-era ending after .ai | artificial intelligence |
| Search geotargeting | Signals Slovenia to search engines | Signals Anguilla to search engines |
| DNSSEC-signed | Yes | Yes |
| Name servers (IPv6) | 6 (6) | 6 (6) |
Choose .si if…
- AI labs, agents and research projects built around "superintelligence" (SI)
- Short brands that missed out on the .ai land rush
- Slovenian businesses, and Spanish or Italian wordplay ("sí" means yes)
Watch out for
- Outside the AI crowd, .si still reads as Slovenia, not "superintelligence"
- Popular short names are being picked up fast as the term spreads
- Pair it with your .com or .ai so email and word of mouth don't go astray
A sharp, short pick for AI and research brands that want "superintelligence" in the name — open to registrants worldwide and run by a stable public registry. Just remember most people still read it as Slovenia first.
Choose .ai if…
- AI products, agents, model labs and data companies
- Short brandable names with an obvious "AI" story
- Product sub-brands (yourbrand.ai alongside yourbrand.com)
Watch out for
- Prices are higher than .com, and premium names are common
- The registry has historically required multi-year registrations
- Hype cycles move — make sure the name still works if "AI" stops being the headline
Worth it if you're building in AI and the name is clean — but expect to pay more than for a .com, and buy for multiple years.
.si vs .ai FAQ
Is .si better than .ai?
Neither is better across the board. A sharp, short pick for AI and research brands that want "superintelligence" in the name — open to registrants worldwide and run by a stable public registry. Just remember most people still read it as Slovenia first. Worth it if you're building in AI and the name is clean — but expect to pay more than for a .com, and buy for multiple years.
Does .si or .ai rank better on Google?
Google doesn't give either ending a ranking bonus. What differs is geotargeting: .si is signals slovenia to search engines, and .ai is signals anguilla to search engines. Content and links matter far more than the TLD.
Can I use both .si and .ai?
Yes, and many brands do: register both, pick one as the main site, and redirect the other to it so links and email never go astray.