Sam Altman would like remind you that humans use a lot of energy, too

OpenAI CEO Sam Altman addressed concerns about AI’s environmental impact this week while speaking at an event hosted by The Indian Express. For one thing, Altman — who was in India for a major AI summit — said concerns about AI’s water usage are “totally fake,” though he acknowledged it was a real issue when “we used to do evaporative cooling in data centers.” “Now that we don’t do that, you see these things on the internet where, ‘Don’t use ChatGPT, it’s 17 gallons of water for each query’ or whatever,” Altman said. “This is completely untrue, totally insane, no connection to reality.” He added that it’s “fair” to be concerned about “the energy consumption — not per query, but in total, because the world is now using so much AI.” In his view, this means the world needs to “move towards nuclear or wind and solar very quickly.” There’s no legal requirement for tech companies to disclose how much energy and water they use, so scientists have been trying to study it independently. Data centers have also been connected to rising electricity prices. Citing a previous conversation with Bill Gates, the interviewer asked whether it’s accurate to say a single ChatGPT query currently uses the equivalent of 1.5 iPhone battery charges, to which Altman replied, “There’s no way it’s anything close to that much.” Altman also complained that many discussions about ChatGPT’s energy usage are “unfair,” especially when they focus on “how much energy it takes to train an AI model, relative to how much it costs a human to do one inference query.” Techcrunch event Save up to $300 or 30% to TechCrunch Founder Summit 1,000+ founders and investors come together at TechCrunch Founder Summit 2026 for a full day focused on growth, execution, and real-world scaling. Learn from founders and investors who have shaped the industry. Connect with peers navigating similar growth stages. Walk away with tactics you can apply immediately.Offer ends March 13. Save up to $300 or 30% to TechCrunch Founder Summit 1,000+ founders and investors come together at TechCrunch Founder Summit 2026 for a full day focused on growth, execution, and real-world scaling. Learn from founders and investors who have shaped the industry. Connect with peers navigating similar growth stages. Walk away with tactics you can apply immediatelyOffer ends March 13. Boston, MA | June 9, 2026 REGISTER NOW “But it also takes a lot of energy to train a human,” Altman said. “It takes like 20 years of life and all of the food you eat during that time before you get smart. And not only that, it took the very widespread evolution of the 100 billion people that have ever lived and learned not to get eaten by predators and learned how to figure out science and whatever, to produce you.” So in his view, the fair comparison is, “If you ask ChatGPT a question, how much energy does it take once its model is trained to answer that question versus a human? And probably, AI has already caught up on an energy efficiency basis, measured that way.” You can watch the full interview below. The conversation about water and energy usage begins at around 26:35. Topics AI, OpenAI, sam altman Anthony Ha Anthony Ha is TechCrunch’s weekend editor. Previously, he worked as a tech reporter at Adweek, a senior editor at VentureBeat, a local government reporter at the Hollister Free Lance, and vice president of content at a VC firm. He lives in New York City. You can contact or verify outreach from Anthony by emailing anthony.ha@techcrunch.com.

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