.ai is explicit category signaling
For companies whose identity is tightly connected to artificial intelligence, .ai can make the category obvious before a visitor reads the homepage.
.io is broader technology signaling
.io is widely used by software and developer-oriented companies and can feel less tied to one specific technology trend.
Choose for the company you expect to become
If AI is the enduring category, .ai can be a strong fit. If the product may expand beyond AI positioning, a broader extension or .com may offer more flexibility.