ClaimsSam Altman

“There is no nuclear facility.”

Sam Altman, CEO of OpenAI, interview answer 18 March 2024 Transcript for Sam Altman: OpenAI, GPT-5, Sora, Board Saga, Elon Musk, Ilya, Power & AGI (Lex Fridman)

Factual Their own work or organisation

Asked whether OpenAI's compute was in the same nuclear facility, Altman said there is no nuclear facility.

Mostly true True in substance, wrong in a detail.

Factual: Statements about the present or the past, checked against the record: did they hold up?

The second judge would not resolve this claim; the verdict shown is the first judge's.

Said for an organisation they lead or work for; it counts on both records.

What would count as true or false

Judge as of 2024-03-18. True: as of that date, OpenAI had no nuclear facility (no nuclear power plant, reactor or secret nuclear site) that it owned, operated or was building for its compute or data centres. Mostly true: no OpenAI nuclear facility existed, but there were unrelated or indirect links (e.g., Altman's personal investments in nuclear companies such as Oklo or Helion, which are not OpenAI facilities). Mostly false: OpenAI had a concrete agreement or project for a dedicated nuclear facility tied to its compute, though not yet built. False: OpenAI did have or operate a nuclear facility at that time.

Set before the research began.

Evidence (7)

  1. E1 On Lex Fridman's Second Podcast with Altman — LessWrong LessWrong (personal blog post by Zvi Mowshowitz, 'Don't Worry About the Vase') · 25 March 2024

    “Also says no secret nuclear facility, but it would be nice.”
  2. E2 On Lex Fridman's Second Podcast with Altman — LessWrong LessWrong (personal blog post by Zvi Mowshowitz, 'Don't Worry About the Vase') · 25 March 2024

    “Still believes in fusion, and fission.”
  3. E3 On Lex Fridman’s Second Podcast with Altman LessWrong (post by Zvi, 'Don't Worry About the Vase') · 25 March 2024

    “Also says no secret nuclear facility, but it would be nice.”
  4. E4 The AI industry is pushing a nuclear power revival — partly to fuel itself NBC News · 7 March 2024

    “In rural southeastern Idaho, Oklo is working to build a small-scale nuclear powerhouse that could fuel data centers like the ones OpenAI and its competitors need.”
  5. E5 AI bigwigs want to go all-in on nuclear. They also happen to be behind nuclear companies | CNN Business CNN · 24 December 2024

    “No, it’s not OpenAI, the artificial intelligence company he co-founded and now runs as CEO.”
  6. E6 Who’s got enough power for OpenAI’s 5-gigawatt data center plans? | Fortune Fortune · 27 September 2024

    “To support its ambitions to develop AI systems that would be as intelligent as people, OpenAI wants the U.S. government to help streamline the construction of massive data centers that would suck up as much power as major American cities.”
  7. E7 ChatGPT’s boss claims nuclear fusion is the answer to AI’s soaring energy needs. Experts say not so fast | CNN CNN · 26 March 2024

    “Altman himself has invested hundreds of millions in fusion and in recent interviews has suggested the futuristic technology, widely seen as the holy grail of clean energy, will eventually provide the enormous amounts of power demanded by next-gen AI.”

Reasoning

None of the independent coverage from around and after 2024-03-18 describes a nuclear facility that OpenAI owned, operated or was building. Instead, it ties nuclear projects to Altman's personal ventures. E4 describes Oklo building a small reactor in Idaho that "could fuel data centers like the ones OpenAI ... need[s]". E5 distinguishes a nuclear company linked to Altman from OpenAI ("not OpenAI"), and E7 refers to Altman's personal investments in fusion. These links are indirect and unrelated to any OpenAI facility, which fits the "mostly true" criterion; E1 records Altman's denial only as a summary of his own words.

Cite this claim

Sam Altman, “Asked whether OpenAI's compute was in the same nuclear facility, Altman said there is no nuclear facility.” (said 18 March 2024). Verdict: mostly true. Reliability API, claim c_cfa255d39401, method 0.1.0+c876030c, dataset release v1.1.2. https://epistacklabs.com/claims/c_cfa255d39401

This claim is in dataset release v1.1.2, with the same verdict.

Reply to this claim

For Sam Altman, or someone speaking for them: a correction or counter-evidence. Replies are read before anything is shown; an approved reply shows your name, role, date, statement and link. Your email address is never shown and is deleted 30 days after the decision (privacy).

More factual claims by Sam Altman

  1. Mostly true Factual 4 September 2026
    “The very end of 2015, we announced it, and then the first day of work was like January of 2016.”

    Altman said OpenAI was announced at the very end of 2015 and that its first day of work was around January 2016.

  2. Resolved true Factual 4 September 2026
    “I was always an AI nerd. I was a real sci-fi nerd as a kid.”

    Sam Altman was a sci-fi and AI enthusiast as a child.

  3. Mostly true Factual 11 September 2025
    “he later decided that we weren’t on a trajectory to be successful and he didn’t want to.”

    Elon Musk later decided OpenAI was not on a trajectory to succeed, told its founders it had a zero percent chance of success, and stopped participating.

  4. Resolved true Factual 11 September 2025
    “He helped us start OpenAI.”

    Elon Musk helped start OpenAI.

  5. Resolved true Factual 14 August 2025
    “When we started, it was four and a half years before we had our first product and it was very uncertain.”

    When OpenAI started, it took four and a half years before it had its first product.

All of them

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