The Billionaire Behind ChatGPT Is Selling His Home for a Staggering $49 Million: Here’s an Inside Look

Sam Altman attends the eleventh annual Breakthrough Prize Ceremony at The Barker Hangar in Santa Monica, California, USA, 05 April 2025.
CAROLINE BREHMAN/EPA-EFE / Shutterstock / CAROLINE BREHMAN/EPA-EFE / Shutterstock

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Billionaires like Jeff Bezos and Elon Musk may get all the attention, but Sam Altman, the controversial CEO of the artificial intelligence company OpenAI (parent of ChatGPT), is having his pricey day in the sun — literally. Or rather, he’s inviting others to do so by selling his Hawaiian home for $49 million — a staggering sum to the average person, but pocket change for his fellow billionaires.

A Hawaiian Idyll

Altman purchased the property in July 2021, and married his husband, Oliver Mulherin, on the property in January 2024, which Realtor.com describes as a “compound” in the Kailua-Kona area of the Big Island. Sitting on 21.8 acres, with 10 bedrooms and 11.5 bathrooms, at first glance you’d think the home was actually a resort. It certainly could pass for one, surrounded by palm trees and featuring a private pool to name just a few of its amenities.

The Amenities

The billionaire tech mogul was clearly willing to pay any expense for amenities and privacy. The secluded property is situated oceanfront with “sweeping views of Kailua Bay and the Pacific Ocean,” which “create a refined island experience,” according to Realtor.com. It’s more than a single house, as well, but several, with a main house, a guest house and a beach “bungalow” — a place more than suited to host family and friends.

Inside, it’s constructed in a flowing open plan style that allows outdoors and indoors to feel seamlessly connected. The lucky millionaire who buys the property will find multiple living spaces, a movie theater, kitchen and breakfast bar, to name a few features.

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Outdoors lovers will enjoy what it has to offer, as well, namely the view: The estate offers unparalleled oceanfront views and provides instant access to the beach, where many different water sports can be enjoyed either in the private marina or in the heated gunite pool with built-in spa. Realtor.com reported that the secretive listing shows images of people on a paddle board to the ocean directly from the private marina. There are also basketball and tennis courts.

Beyond Basic Needs

Billionaires don’t buy homes built for necessity, they build homes of grandiosity and luxury, places to entertain and pamper, homes that are nicer than most of the hotels the average person can afford.

While the listing itself is not easily accessible except through exclusive realtor websites, it also contains some details you surely won’t find at a regular home, like a private marina with its own man-made beach and a helipad.

It’s no surprise that Altman and his husband chose to hold their wedding on the property, reportedly hosting guests on one of the sheltered outdoor lanai (porch).

Buyer Beware

This sumptuous property can be yours for the tidy sum of $49 million — but buyer beware, the taxes on this property are equally enormous. Realtor.com reported that based on records they have access to, Altman will owe $631,454 in property taxes for 2025 alone.

If you have the millions to spare, however, what could be more idyllic than a home in paradise?

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