What Is an AI Domain?

About the .ai Extension

.ai is the country-code top-level domain of Anguilla, a small Caribbean island. But since the letters match the acronym for artificial intelligence, it has quietly become the default extension for AI startups, research labs, and product teams.

OpenAI, Character.ai, Perplexity, x.ai and most of the names you read about every week run on .ai addresses. That visibility has pulled the extension into a different price tier than it sat in a few years ago.

A Quick History

.ai was assigned to Anguilla in 1995. For about two decades it stayed niche. The shift came when AI moved from research papers into product roadmaps; demand followed.

Roughly 60,000 .ai domains were registered at the end of 2022. By the end of 2025 that figure had passed 550,000 — more than eight times the volume in three years, an acceleration rare in the domain world.

Who Is Using It?

The biggest cluster is AI startups, but it doesn't end there. SaaS companies, machine-learning platforms, chatbot vendors, automation tools, and data-analytics firms have all been moving onto .ai.

Well-known examples include OpenAI's product portal, the Perplexity.ai search engine, and the Character.ai chat platform — and the list grows every month.

Why Buy a .ai?

• Your domain says what you do, before anyone clicks
• Short, memorable names are still available
• Two letters that read the same in every market
• A real asset class with rising valuations
• A relevance signal in AI-related searches

How to Register

You can register a .ai through any accredited registrar. The process takes a few minutes and requires no documents or extra verification.

We recommend Spaceship — competitive pricing, a clean control panel, and smooth transfers. Yearly cost sits in the $70–80 range.