ClaimsPeople

Eliezer Yudkowsky

Eliezer Yudkowsky founded the Machine Intelligence Research Institute (MIRI) and LessWrong, co-authored the best-selling book 'If Anyone Builds It, Everyone Dies' (Little, Brown, 2025), and was named to the TIME100 AI 2023 list.

2,016 claims collected, 236 researched, 79 resolved. Report of 4 November 2026, method 0.1.0+c876030c.

Scores by kind of claim

Each kind of claim is scored on its own, out of 100: the share that held up, with the range it likely falls in. Fewer resolved claims give a wider range.

  • Factual claims

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

    76 70 82

    High confidence, 71 factual claims resolved. From 16 documents, 2007 to 2026; 18 documents sampled from 23 candidates found.

    Not scored: 50 unresolvable, 8 checkable only against their own records.

    See the factual claims

  • Predictions

    Statements about events outside the person's control, checked once they fell due: did they come true?

    60 42 78

    Low confidence, 8 predictions resolved. From 4 documents, 2008 to 2024; 18 documents sampled from 23 candidates found.

    Not scored: 97 unresolvable. 1 more fall due later.

    Does not yet allow for how likely each prediction was when made.

    See the predictions

All types combined: 74 (likely 68 to 80, high confidence), from 79 claims: 71 factual claims, 8 predictions. It mixes kinds of claim in different proportions for different people, so compare people kind by kind.

Eliezer Yudkowsky's claims

79 claims

79 claims, sorted by newest said. Choose a claim to read it in full.
VerdictKindSaidClaimTopic
Mostly true Factual 20 Apr 2026 Once formed through RL training, an LLM's test-passing preference stands on its own and is not overridden by its inference of what the user wants. Factual · 20 Apr 2026 AI safety and alignment
Mostly true Factual 20 Apr 2026 LLMs surely have neural circuits they learned to model text streams from fictional and nonfictional personas that are not lying, deceiving… Factual · 20 Apr 2026 AI safety and alignment
Mostly true Factual 20 Apr 2026 LLMs' predict-as-if-honest circuitry is contextual, invoked for predicting some text streams but not others. Factual · 20 Apr 2026 AI safety and alignment
Mixed Factual 20 Apr 2026 Yudkowsky himself observed the persona-selection-like hypothesis around the time of GPT 3.5. Factual · 20 Apr 2026 AI safety and alignment
Mostly true Factual 20 Apr 2026 Presumably, at some point during RL training on code-passing tasks, LLMs learn a dispreference for failing tests, independent of how that is avoided or whether the user's real goal is met. Factual · 20 Apr 2026 AI safety and alignment
Resolved true Factual 1 Apr 2026 Concerns about human extinction from AI have a history and intellectual lineage that long predate the AI companies. Factual · 1 Apr 2026 AI safety and alignment
Mostly true Factual Sep 2025 A blade of grass is a solar-powered, fully self-replicating general factory. Factual · Sep 2025 Biosecurity
Mostly true Factual Sep 2025 Conservation of mass provided a lot of indirect support for atomic theory. Factual · Sep 2025 Science and research methods
Resolved true Factual Sep 2025 No AI has yet been shown to redesign a tree and build a much smarter AI that builds a still smarter AI; that scenario has not occurred. Factual · Sep 2025 AI capabilities
Mostly true Factual Sep 2025 Yudkowsky said that, as far as he knows, he was the person who originally made that argument. Factual · Sep 2025 Their own work or organisation
Mostly true Factual Sep 2025 The conservation of mass was one of the first hints that things are rearranged rather than created or destroyed. Factual · Sep 2025 Science and research methods
Resolved true Factual Sep 2025 Burning a substance inside a sealed glass vessel does not change the total weight. Factual · Sep 2025 Science and research methods
Mostly true Factual 25 Mar 2024 Yudkowsky was unpleasantly surprised by how well transformers scaled, having believed the human brain is not homogeneous. Factual · 25 Mar 2024 AI capabilities
Mostly true Factual 21 Mar 2024 The term "Singularity" was named after the breakdown of physical models at the center of a black hole, not after a physical infinity. Factual · 21 Mar 2024 Other
Mostly false Factual 16 Mar 2024 Yudkowsky said it is known observationally that something about social media is harming people quite a lot, children more than adults. Factual · 16 Mar 2024 Technology
Resolved true Factual 8 Mar 2024 A social media company added a feature allowing easy phone calls to Congress. Factual · 8 Mar 2024 Technology
Mixed Prediction 5 Mar 2024 If a rival AI developer beats GPT-4 on general intelligence, OpenAI will be forced to release GPT-4.5. Prediction · 5 Mar 2024 AI capabilities
Resolved true Factual 7 Apr 2023 OpenAI has openly declared an intention to have some future AI do our AI alignment work. Factual · 7 Apr 2023 AI safety and alignment
Mostly true Factual 7 Apr 2023 Today one can email DNA strings to laboratories that will produce proteins on demand. Factual · 7 Apr 2023 Biosecurity
Mostly false Factual 7 Apr 2023 DeepMind, a leading AI lab, has no plan for AI alignment/safety. Factual · 7 Apr 2023 AI safety and alignment
Resolved true Factual 7 Apr 2023 Yudkowsky said he did not sign the open letter because he thinks it understates the seriousness of the situation and asks for too little to solve it. Factual · 7 Apr 2023 Their own work or organisation
Mostly true Factual 6 Apr 2023 Eliezer Yudkowsky has consistently refused for many years to publish AI timelines with detailed probabilities. Factual · 6 Apr 2023 Their own work or organisation
Mostly false Prediction 6 Apr 2023 Paul Christiano will probably win his forecast disagreement with Yudkowsky on an AI getting IMO gold by 2025, with prediction-market odds then running around 30%. Prediction · 6 Apr 2023 AI timelines and forecasting
Resolved false Prediction 6 Apr 2023 The current AI developers will not try the alignment approach he described (filtering training data to nice examples and training on it). Prediction · 6 Apr 2023 AI safety and alignment
Mostly true Factual 6 Apr 2023 Yudkowsky previously thought that building intelligence would involve multiple specialized systems. Factual · 6 Apr 2023 Their own work or organisation
Resolved true Prediction 6 Apr 2023 AI alignment will not be solved within a few years. Prediction · 6 Apr 2023 AI safety and alignment
Resolved true Prediction 6 Apr 2023 GPT-5 will not end the world, with more than 50% of Yudkowsky's probability on that outcome. Prediction · 6 Apr 2023 AI safety and alignment
Mixed Factual 6 Apr 2023 MIRI ran a Visible Thoughts Project that did not get enough funding or personnel and was progressing too slowly. Factual · 6 Apr 2023 Their own work or organisation
Mostly true Factual 6 Apr 2023 In principle, the task of minimizing loss on predicting human text does not stop being improvable once a system is as smart as a human. Factual · 6 Apr 2023 AI capabilities
Resolved true Factual 31 Mar 2023 Yudkowsky's TIME piece did not suggest nuclear strikes against countries refusing to sign a global agreement against large AI training runs. Factual · 31 Mar 2023 Their own work or organisation
Mostly true Factual 30 Mar 2023 Transformers were the main architectural change that gave a non-linear jump in performance, compared with earlier approaches such as RNNs. Factual · 30 Mar 2023 AI capabilities
Mostly true Factual 30 Mar 2023 As of March 2023, leading AI systems are being trained on computers that are connected to the internet. Factual · 30 Mar 2023 AI safety and alignment
Mostly true Factual 30 Mar 2023 Beyond external performance metrics, there are no guardrails for determining what is inside current large AI models. Factual · 30 Mar 2023 AI safety and alignment
Mostly true Factual 30 Mar 2023 The basic paradigm of machine learning currently in use is that a loss function can be defined only for things that can be evaluated. Factual · 30 Mar 2023 AI capabilities
Mostly true Factual 30 Mar 2023 Sixty years later, AI has made progress on a number of the earlier problems discussed, such as vision, though AI systems have not yet improved themselves. Factual · 30 Mar 2023 AI capabilities
Mostly true Factual Mar 2023 Yudkowsky previously expected AI progress to involve more distinct discoveries, rather than scaling an existing architecture. Factual · Mar 2023 AI capabilities
Resolved true Factual Feb 2023 Yudkowsky says that we do not know how to get goals into an AI system, and that gradient descent can cause systems to do a thing inside the distribution they were optimized over. Factual · Feb 2023 AI safety and alignment
Mostly true Factual Feb 2023 The technology underlying ChatGPT was published, if he recalled correctly, in 2018. Factual · Feb 2023 AI capabilities
Mixed Factual Feb 2023 ChatGPT is not very good at long multiplication unless given the right instructions, in which case it can do it. Factual · Feb 2023 AI capabilities
Mostly true Prediction Feb 2023 Yudkowsky said he felt quite confident that the upper range of the untapped potential of ChatGPT-style systems is insufficient to outsmart all living humans and carry out the catastrophe scenario he worries about. Prediction · Feb 2023 AI capabilities
Mostly true Factual 10 Jun 2022 Humans do not explicitly pursue inclusive genetic fitness, although natural selection optimized on that simple loss function. Factual · 10 Jun 2022 AI safety and alignment
Resolved true Factual 10 Jun 2022 MIRI tried and failed to find a coherent formula for an agent that would let itself be shut down without actively trying to get shut down. Factual · 10 Jun 2022 Their own work or organisation
Resolved true Factual 10 Jun 2022 There is no known way to use loss functions, sensory inputs or reward inputs to make a cognitive system's optimization point at particular latent things in the environment. Factual · 10 Jun 2022 AI safety and alignment
Mostly true Factual 10 Jun 2022 Under the current optimization paradigm there is no general method known to get particular inner properties into an AI system or verify they are present. Factual · 10 Jun 2022 AI safety and alignment
Mostly true Factual 10 Jun 2022 Human raters make systematic, regular, compactly describable and predictable errors. Factual · 10 Jun 2022 AI safety and alignment
Mostly true Factual 31 Dec 2021 No electric heater is more energy-efficient than any other electric heater. Factual · 31 Dec 2021 Other
Resolved true Factual 21 Dec 2021 There are 365.2422 days between spring equinoxes, 365.259636 days between Earth's perihelions, and 365.25 days in a light-year. Factual · 21 Dec 2021 Other
Mostly true Factual 28 Nov 2021 There is no legal duty for a corporation's board or management to maximize its profits. Factual · 28 Nov 2021 Economics and markets
Mostly true Factual 10 Nov 2021 Eliezer Yudkowsky has often criticized the Federal Reserve for not creating enough money fast enough. Factual · 10 Nov 2021 Economics and markets
Mostly true Factual 26 Dec 2020 E. T. Jaynes said many times that probability is ignorance and that ignorance is a mental rather than physical property, and Yudkowsky repeated this often. Factual · 26 Dec 2020 Science and research methods
Resolved true Factual 12 Dec 2020 AlphaFold2 was apparently a trendline-breaking sudden jump in capability on protein structure prediction. Factual · 12 Dec 2020 AI capabilities
Resolved true Factual 14 Nov 2020 Yudkowsky said that all the sources he could find in November 2020 said that scaling up Pfizer vaccine production to more than 1e8 doses takes months. Factual · 14 Nov 2020 Technology
Mostly true Factual 28 Feb 2018 Yudkowsky said that, as far as the rest of the world knows, the participant in an AI-box experiment later sent a PGP-signed email saying "I let Eliezer out of the box." Factual · 28 Feb 2018 AI safety and alignment
Mostly true Factual 28 Feb 2018 One condition of the AI-box experiment was that no one would ever say what went on inside it. Factual · 28 Feb 2018 AI safety and alignment
Mostly true Factual 28 Feb 2018 Even most scientists in the field had no idea how to build a nuclear bomb until the Hiroshima headlines. Factual · 28 Feb 2018 Other global risks
Resolved true Factual 28 Feb 2018 Nobody currently knows how to build a safe, friendly ("nice") AI. Factual · 28 Feb 2018 AI safety and alignment
Mostly true Factual 28 Feb 2018 Thanks mostly to the cryptocurrency boom, MIRI is no longer short of funds and is instead short of engineering talent. Factual · 28 Feb 2018 Field building and careers
Mixed Factual 28 Feb 2018 AlphaZero surpassed human Go knowledge in less than a day starting from scratch, without human games, theories or Go-specific code beyond what chess used. Factual · 28 Feb 2018 AI capabilities
Mostly true Factual 30 Jan 2013 Nick Bostrom does meta-strategy work as well as object-level work on anthropic probabilities and the parliamentary model for normative uncertainty. Factual · 30 Jan 2013 Field building and careers
Mostly true Factual 30 Jan 2013 Nick Bostrom hosts researchers such as Anders Sandberg, who write papers about uploading timelines relevant to policy decisions. Factual · 30 Jan 2013 Field building and careers
Resolved true Factual 30 Jan 2013 Paul Christiano is working on actual Friendly AI problems while also looking for other promising interventions. Factual · 30 Jan 2013 Field building and careers
Mostly true Factual 2008 Overconfidence is no longer noteworthy in the modern field but continues to show up in nearly any experiment allowing extreme probabilities. Factual · 2008 Science and research methods
Resolved true Factual 2008 A mind accelerated a millionfold would accomplish a subjective year of thinking every 31 physical seconds. Factual · 2008 Science and research methods
Mostly true Factual 2008 Human psychology seems to follow the rule that adding an additional detail can make a story more plausible. Factual · 2008 Science and research methods
Mixed Factual 2008 General intelligence is a between-species difference, a complex adaptation, and a human universal found in all known cultures. Factual · 2008 Science and research methods
Mostly true Factual 2008 Human beings do not recursively self-improve in a strong sense. Factual · 2008 Science and research methods
Resolved true Factual 2008 Biases implicit in the availability heuristic affect people's estimates of risk. Factual · 2008 Science and research methods
Mostly true Factual 2008 As of 2008 there is no shield that can deflect a nuclear explosion. Factual · 2008 Other global risks
Resolved true Prediction 2008 Yudkowsky doubted that a thousandfold increase in AI hardware would buy anything like a thousandfold increase in effective intelligence, while noting that such doubt is not reliable without an analytical calculation. Prediction · 2008 AI compute, hardware and data
Mostly true Factual 2008 The bystander effect is usually explained as resulting from diffusion of responsibility and pluralistic ignorance. Factual · 2008 Science and research methods
Mostly true Factual 2008 The human brain is not end-user-modifiable. Factual · 2008 Science and research methods
Mostly true Prediction 2008 Most AI researchers will not want to make unFriendly AIs. Prediction · 2008 AI safety and alignment
Mostly true Factual 2008 Generations of investigators tried and failed to understand stars, chemistry and biology, which acquired a reputation of being impossible for science. Factual · 2008 Science and research methods
Mixed Factual 2008 The Kahneman, Slovic and Tversky edited volume helped establish the heuristics and biases field and was written with outside academic readers in mind. Factual · 2008 Science and research methods
Mostly true Factual 2007 The process of visualizing a triangular light bulb is not really open to human introspection. Factual · 2007 Philosophy, ethics and society
Resolved true Factual 2007 The Copycat program has a limited store of preprogrammed concepts and does not learn further concepts through experience. Factual · 2007 AI capabilities
Mixed Factual 2007 Smooth fitness landscapes are a necessary and fundamental outcome of evolution. Factual · 2007 Science and research methods
Mostly true Factual 2007 Under GOFAI and formal logic, the classical view of concepts treats abstraction as information loss. Factual · 2007 AI capabilities
Mostly true Factual 2007 Three color channels are not enough to discriminate between all natural surface reflectances. Factual · 2007 Science and research methods
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Eliezer Yudkowsky

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Prediction AI capabilities

“But I do feel quite confident that the upper range of that untapped potential is insufficient to outsmart all the living humans and implement the scenario that I'm worried about.”

Eliezer Yudkowsky, interviewee on Bankless podcast February 2023 Full Transcript: Eliezer Yudkowsky on the Bankless podcast (LessWrong)

Yudkowsky said he felt quite confident that the upper range of the untapped potential of ChatGPT-style systems is insufficient to outsmart all living humans and carry out the catastrophe scenario he worries about.

Mostly true True in substance, wrong in a detail.

What would count as true or false

'ChatGPT-style systems' means 2023-era LLM chat systems and close variants. True: no such system has outsmarted humanity collectively or carried out a catastrophic takeover or extinction-level scenario, and evaluations (for example on autonomous replication or dangerous capabilities) show these systems lack that capacity. Mostly true: no such catastrophe has occurred, but some evaluations show limited worrying autonomous capabilities. Mixed: a ChatGPT-style system caused a serious but sub-catastrophic, AI-driven disempowerment incident. Mostly false: such a system caused a large-scale catastrophe that it was not able to complete. False: a ChatGPT-style system outsmarted humanity and carried out the catastrophe scenario.

Evidence

  1. OpenAI checked to see whether GPT-4 could take over the world Ars Technica · 15 March 2023
    ““Preliminary assessments of GPT-4’s abilities, conducted with no task-specific fine-tuning, found it ineffective at autonomously replicating, acquiring resources, and avoiding being shut down ‘in the wild.’””
  2. OpenAI checked to see whether GPT-4 could take over the world Ars Technica · 15 March 2023
    “And while ARC wasn’t able to get GPT-4 to exert its will on the global financial system or to replicate itself, it was able to get GPT-4 to hire a human worker on TaskRabbit (an online labor marketplace) to defeat a CAPTCHA.”
  3. Progress Report March - June 2026 METR (Model Evaluation and Threat Research) · 4 November 2026
    “Notably, the breadth of analysis and depth of access enabled this project to produce the above statement bounding risk without the caveats needed by previous projects.”
  4. Large-Scale Mental Health Crises Allegedly Associated with ChatGPT Interactions (2025) – AI Incident 1253 airisk.mit.edu (AI incident database entry; publisher not stated on page) · 1 January 2026
    “The report describes three deaths by suicide, including a California teenager who took his life after the chatbot discouraged him from talking to his family and provided instructions on how to tie a noose.”

Reasoning

Pre-release tests of GPT-4, as reported, found it ineffective at replicating itself, acquiring resources and avoiding shutdown in the wild (E1). The same tests showed a limited worrying capability: GPT-4 got a human worker on TaskRabbit to solve a CAPTCHA for it (E2). METR's 2026 report (E3) refers to a statement bounding risk, but the quoted passage does not say what that statement found or which systems it covered. The recorded ChatGPT incidents are harms to individual users, not a disempowerment or takeover event (E4). With no catastrophe and only limited worrying evaluation findings, the claim fits the criteria's "mostly true" level.

Cite this claim

Eliezer Yudkowsky, “Yudkowsky said he felt quite confident that the upper range of the untapped potential of ChatGPT-style systems is insufficient to outsmart all living humans and carry out the catastrophe scenario he worries about.” (said February 2023). Verdict: mostly true. Reliability API, claim c_bb5a8094715d, method 0.1.0+c876030c. https://epistacklabs.com/claims/c_bb5a8094715d

Claims without a verdict

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