Elon Musk has publicly reversed his earlier dismissal of Anthropic, now calling it the world's fastest-growing AI startup with annualized revenue double that of OpenAI.
Amazon, which has committed $33 billion to Anthropic in exchange for the startup's commitment to spend $100 billion or more with AWS, stands to benefit substantially—both from Anthropic's cloud spending (which contributed to AWS's 37% year-over-year revenue growth last quarter) and from its estimated 10%-plus equity stake, potentially worth around $250 billion if Anthropic's reported IPO materializes later this year.
What happened
Elon Musk has admitted he was wrong about Anthropic's potential in AI, after calling the startup unlikely to lead a year ago. Anthropic is now the fastest-growing AI startup in the world, with annualized revenue estimated at double that of OpenAI. Amazon has invested over $10 billion in Anthropic and committed to a total of $33 billion, with Anthropic committing to spend $100 billion or more with Amazon Web Services (AWS) as its primary cloud provider.
Why it matters
AWS revenue grew 37% year over year last quarter to an annualized run rate of $169 billion, with much of this growth attributed to Anthropic. Amazon also holds an estimated equity stake of over 10% in Anthropic, which could be worth roughly $250 billion if Anthropic goes public in what is reportedly the largest initial public offering in history later this year. The deal sets a standard for how other AI startups and Fortune 500 enterprises will use cloud infrastructure, potentially driving further AWS growth.
What to watch
Amazon management believes AWS can eventually grow to $1 trillion in revenue, a milestone that may take a decade or longer. Anthropic's reported preparations for an IPO later this year will be a key catalyst for the valuation of Amazon's stake.
A year ago, Elon Musk publicly stated that Anthropic would never be a leader in artificial intelligence. Today, he has reversed that position, acknowledging that Anthropic is now the fastest-growing AI startup in the world—and that it has achieved annualized revenue estimated at double that of OpenAI, widely considered Musk's competitor in the AI space.
Amazon has positioned itself as the primary infrastructure partner for Anthropic's rise. The company made an early investment decision to back Anthropic, likely in response to Microsoft's infrastructure partnership with OpenAI. To date, Amazon has invested over $10 billion in Anthropic directly. More significantly, Amazon has committed to investing a total of $33 billion in the startup over time. In exchange for this capital commitment, Anthropic has agreed to use Amazon Web Services (AWS) as its primary cloud provider and to spend $100 billion or more with AWS—a massive long-term revenue commitment that underscores the depth of the partnership.
The financial impact on Amazon is already visible. Last quarter, AWS revenue grew 37% year over year to an annualized run rate of $169 billion. The article attributes much of this growth to Anthropic's cloud spending. Beyond the recurring cloud revenue, Amazon holds an equity stake in Anthropic estimated at over 10%, though the exact percentage is not publicly confirmed. If Anthropic proceeds with an IPO later this year—one the article describes as potentially the largest initial public offering in history—Amazon's stake could be worth approximately $250 billion, providing a substantial equity kicker on top of infrastructure revenue.
Amazon management has stated that AWS can eventually grow to $1 trillion in annualized revenue, a target that may take a decade or longer to achieve. Anthropic's demonstrated growth trajectory and its outsized cloud commitments suggest it could be a driver of that expansion. The article concludes that Amazon stock is worth buying on the strength of this relationship and the broader growth potential of AWS, without accounting for Amazon's e-commerce and advertising businesses.
Elon Musk's admission represents a significant credibility shift in how the AI industry assesses competitive dynamics. A year ago, Musk predicted Anthropic would not lead in AI; today the startup is the fastest-growing in the sector with revenue double that of OpenAI, the company most observers had crowned the AI leader. This reversal matters because it signals that the competitive landscape is far less settled than many assumed.
Amazon's early and aggressive bet on Anthropic—$33 billion committed, with Anthropic committing to spend $100 billion or more on AWS—was initially defensive, designed to match Microsoft's tie-up with OpenAI. But Anthropic's rapid growth has transformed that infrastructure deal into a potentially transformational revenue source. AWS grew 37% year over year last quarter to an annualized run rate of $169 billion, and much of that growth is attributed to Anthropic's cloud spending. If Anthropic maintains its trajectory and eventually clears $100 billion in annualized revenue, the cloud infrastructure revenue alone could be substantial for AWS. On top of that, Amazon's estimated 10%-plus equity stake in Anthropic represents optionality: if Anthropic's reported IPO materializes later this year as the largest in history, that stake could appreciate to roughly $250 billion. The combination of recurring cloud revenue from a fastest-growing customer and potential equity upside makes this one of Amazon's most consequential strategic bets in recent years.
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