Amazon's Anthropic stake is leading to a huge windfall

Then-Amazon Web Services CEO Adam Selipsky gestures toward Anthropic CEO Dario Amodei during a conference. Noah Berger/Getty Images for Amazon Web Services Amazon's stake in Anthropic is proving to be a massive boon to the world's largest online retailer.In its latest quarterly earnings report, Amazon reported non-operating pre-tax other income of $53.4 billion, "primarily from our investment in Anthropic."According to previous financial filings, Amazon has invested $13 billion in Anthropic with the potential for up to $20 billion more.In June, Anthropic announced that it confidentially filed for an initial public offering, taking the first step toward a highly anticipated IPO. In late May, Anthropic said that it had completed a Series H funding round that valued the company at $965 billion.Amazon isn't the only Big Tech name sharing in Anthropic's success.On Wednesday, Microsoft reported its investment in Anthropic had netted a $3.2 billion gain. Microsoft previously invested $5 billion in Anthropic.Anthropic has seen its valuation skyrocket as the popularity of its Claude family of models pushes the overall generative AI race. Read next Brent D. Griffiths Brent Griffiths is a senior reporter at Business Insider who covers AI and tech.Previously, he worked at the Washington Post as a researcher on Power Up and the Finance 202. He started his career at Politico where he worked on the web production team and covered breaking news. His passion for covering politics has only grown since he cut his teeth covering the presidential campaign as a student journalist. He's also contributed to the Almanac of American Politics. Amazon Anthropic