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Is AI a Bubble? Not So Fast.
It’s far too early to say if AI is a bubble. But the technology’s power to transform society means that believing it’s a bubble can be something of a security blanket.
By Tyler Cowen
11.18.25 — Tyler Cowen Must Know
“It is premature to write off current AI valuations as a bubble,” writes Tyler Cowen. (Image via Wellcome Collection)
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For more on this subject, read Niall Ferguson on why the AI sector may be headed for a crash after all.

Last week, Warren Buffett’s Berkshire Hathaway announced it had bought more than 17.8 million shares of Alphabet, Google’s parent company, at a total price of $4.3 billion.

How can that be? Isn’t AI supposed to be the world’s biggest bubble? Wouldn’t that mean that Google, which is increasingly becoming an AI-focused company, would be a poor investment? After all, Google will soon release their much-heralded Gemini 3.0 model. And the prices of Google shares are already nearing all-time highs.

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Tyler Cowen
Tyler Cowen is Holbert L. Harris Professor of Economics at George Mason University and also Faculty Director of the Mercatus Center. He received his PhD in economics from Harvard University in 1987. His book The Great Stagnation: How America Ate the Low-Hanging Fruit of Modern History, Got Sick, and Will (Eventually) Feel Better was a New York Times best-seller. He was named in an Economist poll as one of the most influential economists of the last decade and Bloomberg Businessweek dubbed him "America's Hottest Economist." Foreign Policy magazine named him as one of its "Top 100 Global Thinkers" of 2011. He co-writes a blog at www.MarginalRevolution.com, hosts a podcast Conversations with Tyler, and is co-founder of an online economics education project, MRU.org. He is also director of the philanthropic project Emergent Ventures.
Tags:
Investing
Economics
Artificial Intelligence
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