Fresh off of hitting billionaire status earlier this year, Sam Altman is vowing to give away most of his wealth.

The OpenAI CEO and his partner, Oliver Mulherin, recently signed the Giving Pledge.

"We would not be making this pledge if it weren't for the hard work, brilliance, generosity, and dedication to improve the world of many people that built the scaffolding of society that let us get here," they wrote in their pledge letter dated May 18. "There is nothing we can do except feel immense gratitude and commit to pay it forward, and do what we can to build the scaffolding up a little higher."

They will focus their giving on "supporting technology that helps create abundance for people, so that they can then build the scaffolding even higher," they continued.

Created in 2010 by Bill Gates, Melinda French Gates, and Warren Buffett, the pledge asks the world's wealthiest to "publicly commit to give the majority of their wealth to philanthropy either during their lifetimes or in their wills."

Other well-known pledge signatories include MacKenzie Scott, Reid Hoffman, Marc Benioff, Elon Musk, Larry Ellison, and Mark Zuckerberg and Priscilla Chan.

Altman has famously said he has no equity in OpenAI. The former Y Combinator president debuted on the Forbes and Bloomberg billionaires lists earlier this year, owing to a wide range of investments, including in companies like Reddit, Stripe, nuclear energy startup Helion, and longevity biotech startup Retro Biosciences. In addition, Altman also has stakes in YC funds and has been growing his real estate portfolio, according to Forbes.

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