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Sean Green Built the Gallery World’s First CRM. Now He’s Building Its First A.I. Agents.

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14.07.2026

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Sean Green Built the Gallery World’s First CRM. Now He’s Building Its First A.I. Agents.

ARTERNAL is betting that agentic A.I. can help galleries reclaim bandwidth, protect margins and let humans focus on the relationships that drive the art market.

When ARTERNAL founder Sean Green, whose background is in computer science and software engineering, wanted to make inroads into the art world, he started by simply talking with its people. He never stopped. Today, you’ll often find him at art fairs around the world, now deeply familiar with the industry’s machinations but still reaching for an even greater understanding of where the market is moving and how he can support its next chapter. “We believe that if you’re building software, you have to be an anthropologist—you have to study human behavior,” Green tells Observer, when we catch up with him to learn about the latest A.I.-powered implementation of ARTERNAL, his gallery and collection management software.

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This new iteration of ARTERNAL is the culmination of more than a decade of work that was nurtured in New Inc, the New Museum’s incubator. That’s where the company started developing what Green describes as the art world’s first true CRM. “A lot of people don’t know this, but we commercialized those three letters—client relationship management—in the art world. ARTERNAL started with this idea of CRM,” he says. “People knew about inventory management and databases and address books, but they didn’t know about CRM. They would say, ‘Oh, I have a database,’ or ‘I have a database and an address book.’ But that’s not CRM. You have to build workflows that allow people to turn their relationships into revenue.”

The challenge was simple: galleries were constantly building relationships with collectors, artists, advisors and institutions but had no reliable way to track and reactivate them. Dealers, he says, would overestimate their ability to remember buyers and relationships across thousands of contacts, especially in an industry built through fairs, travel, dinners and informal exchanges. “At the end of the day, the art market is about making friends and helping those friends fill their walls with beautiful things. It’s very simple. I know this from flying everywhere—Art Basel, London, Hong Kong. You’re building these relationships,........

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