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.

  • 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.

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

236 claims, sorted by newest said. Choose a claim to read it in full.
VerdictKindSaidClaimTopic
Unresolvable Factual 10 Jun 2026 An announcement of a large project states that non-optimistic results will be considered allowable, valuable and publishable. Factual · 10 Jun 2026 AI safety and alignment
Unresolvable Factual 20 Apr 2026 LLMs generalize at a more shallow level than the deep-rooted commitments of a human with integrity. Factual · 20 Apr 2026 AI safety and alignment
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
Unresolvable Factual 20 Apr 2026 LLMs that learn to predict writing by people on LSD do not themselves have distorted cognition, because that would not yield well-calibrated predictions. 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
Unresolvable Factual 1 Apr 2026 AI companies are pouring hundreds of millions of dollars into lobbying and PACs to try to primary politicians who favor regulating AI. Factual · 1 Apr 2026 AI policy and governance
Mostly true Factual Sep 2025 A blade of grass is a solar-powered, fully self-replicating general factory. Factual · Sep 2025 Biosecurity
Unresolvable Prediction Sep 2025 He said he thinks the fundamental problem is that current AI systems lack a 'prognosticator', and that if it were added, they would immediately go supercritical and kill everyone. Prediction · Sep 2025 AI safety and alignment
Unresolvable Factual Sep 2025 Yudkowsky said he did not predict or expect that, so far, the person on the street would in a lot of ways be wiser. Factual · Sep 2025 Their own work or organisation
Mostly true Factual Sep 2025 Conservation of mass provided a lot of indirect support for atomic theory. Factual · Sep 2025 Science and research methods
Unresolvable Prediction Sep 2025 A superintelligence could develop weapons of unstoppable deadliness. Prediction · Sep 2025 AI safety and alignment
Unresolvable Factual Sep 2025 Yudkowsky said that AI adoption has been unprecedentedly fast, but that he would not quite go so far as to say it has yet produced unprecedented returns. Factual · Sep 2025 AI, the economy and work
Unresolvable Prediction Sep 2025 While discussing wide timeline intervals, Yudkowsky said that two decades "does start to feel like it's pushing it." Prediction · Sep 2025 AI timelines and forecasting
Unresolvable Prediction Sep 2025 A superintelligence would not need new physics to build weapons of unstoppable deadliness. Prediction · Sep 2025 AI safety and alignment
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
Unresolvable Prediction Sep 2025 He said it feels like the better AI systems get at coding and science research reports, the more it looks like another breakthrough is not needed. Prediction · 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
Unresolvable Factual 29 Mar 2024 Current AIs are roughly as generally intelligent, as dangerous and as controllable as human 4-year-olds. Factual · 29 Mar 2024 AI capabilities
Unresolvable Prediction 29 Mar 2024 If Yudkowsky's policy proposals are not adopted and a distorted version is used to justify government takeover, a government rather than a private company might kill everyone on Earth. Prediction · 29 Mar 2024 AI policy and governance
Unresolvable Prediction 27 Mar 2024 Civilization must back off from building artificial superintelligence or it will die; there is no other outcome. Prediction · 27 Mar 2024 AI policy and governance
Unresolvable Prediction 27 Mar 2024 No institution on Earth can solve AI alignment in time, and extremely likely none can solve it at all. Prediction · 27 Mar 2024 AI safety and alignment
Unresolvable Prediction 27 Mar 2024 If today's civilization is allowed to build superintelligence, everyone will die. Prediction · 27 Mar 2024 AI safety and alignment
Unresolvable Prediction 26 Mar 2024 If a government's privileged-access AI turns into an artificial superintelligence, humanity will be killed. Prediction · 26 Mar 2024 AI safety and alignment
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
Unresolvable Factual 15 Mar 2024 The Mamba architecture can think for more than 200 serial steps per thought. Factual · 15 Mar 2024 AI capabilities
Unresolvable Factual 13 Mar 2024 Almost all OpenPhil and FTXFF money was spent on people who advocated regulating rather than banning advanced AI, plus a few alignment groups accepting OpenPhil's view that alignment would be solvable in time. Factual · 13 Mar 2024 Field building and careers
Unresolvable Factual 8 Mar 2024 Yudkowsky's earlier analysis of AI foom explicitly did not rule out the current AI development scenario. Factual · 8 Mar 2024 AI timelines and forecasting
Resolved true Factual 8 Mar 2024 A social media company added a feature allowing easy phone calls to Congress. Factual · 8 Mar 2024 Technology
Unresolvable Prediction 7 Mar 2024 A trend that looks like an intelligence test will soon start excluding some actual humans, if it hasn't already, and that will lead to an unpleasant conversation. Prediction · 7 Mar 2024 AI capabilities
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
Unresolvable Prediction 5 Mar 2024 AI will appear more helpful, being better at predicting what humans want to see, as AI becomes more capable. Prediction · 5 Mar 2024 AI safety and alignment
Unresolvable Prediction 7 Apr 2023 Yudkowsky says that he and many other researchers expect the most likely result of building a superhumanly smart AI under anything remotely like current circumstances is that literally everyone on Earth will die. Prediction · 7 Apr 2023 AI safety and alignment
Unresolvable Prediction 7 Apr 2023 The likely result of humanity facing an opposed superhuman intelligence is a total loss for humanity. Prediction · 7 Apr 2023 AI safety and alignment
Unresolvable Prediction 7 Apr 2023 The gap between how seriously AI risk is taken and how seriously it needed to be taken will not be bridged in six months. Prediction · 7 Apr 2023 AI policy and governance
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
Unresolvable Prediction 7 Apr 2023 A sufficiently intelligent AI will not stay confined to computers for long. Prediction · 7 Apr 2023 AI safety and alignment
Unresolvable Prediction 7 Apr 2023 Solving safety of superhuman intelligence, in the sense of not killing everyone, could take at least about 30 years (half of the 60+ years AI took to reach today's capabilities). Prediction · 7 Apr 2023 AI safety and alignment
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
Unresolvable Prediction 7 Apr 2023 Without precision and preparation, the most likely outcome of building superhuman AI is an AI that does not do what we want and does not care for us or sentient life. Prediction · 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
Unresolvable Prediction 6 Apr 2023 AI will not reach a distinct human level; it will be somewhere around human but not like a human. Prediction · 6 Apr 2023 AI capabilities
Unresolvable Prediction 6 Apr 2023 Yudkowsky said he thinks that at some point, once a system knows itself especially well and is able to rewrite itself, it crystallizes, unless one specifically chooses not to. Prediction · 6 Apr 2023 AI safety and alignment
Own records only Factual 6 Apr 2023 No one in government has reached out to Eliezer Yudkowsky in a way suggesting they have the broad contours of the AI risk problem right. Factual · 6 Apr 2023 AI policy and governance
Unresolvable Prediction 6 Apr 2023 Yudkowsky said he is pretty sure that AI systems that are smart enough will no longer need giant training runs. Prediction · 6 Apr 2023 AI compute, hardware and data
Unresolvable Factual 6 Apr 2023 The LessWrong sequences were written primarily as an instruction manual for potential young people like Yudkowsky. Factual · 6 Apr 2023 Field building and careers
Own records only Factual 6 Apr 2023 GPT-4 got further than Eliezer Yudkowsky had expected simply stacking more layers would get. Factual · 6 Apr 2023 AI capabilities
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
Unresolvable Factual 6 Apr 2023 Nate Soares has written a post about the common mistakes everyone makes when coming into AI alignment. 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
Unresolvable Prediction 6 Apr 2023 AI systems will never be exactly human, imitating humans imperfectly in some ways while exceeding them in speed. Prediction · 6 Apr 2023 AI capabilities
Unresolvable Prediction 6 Apr 2023 Yudkowsky worries that if researchers understood what goes on inside GPT-4, they would know how to rebuild it much smaller. Prediction · 6 Apr 2023 AI safety and alignment
Unresolvable Factual 6 Apr 2023 Yudkowsky wrote something about the circuitry of general intelligence when he was 22. Factual · 6 Apr 2023 Their own work or organisation
Own records only Factual 6 Apr 2023 CFAR (named in the surroundings as the "Center For Applied Rationale") did not get as far as buying an fMRI machine, and it had no funding. Factual · 6 Apr 2023 Their own work or organisation
Unresolvable Prediction 6 Apr 2023 Yudkowsky said he does not think we will live in the "sane world" that would "shut it all down and work on human intelligence enhancement", and that he thinks we are all going to die. 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
Unresolvable Prediction 6 Apr 2023 At some point AI systems will become smart enough to build their own AI systems better than humans can. Prediction · 6 Apr 2023 AI capabilities
Unresolvable Prediction 6 Apr 2023 Yudkowsky said he was not over 50% confident that "they" would actually carry out the "shut it all down" option. Prediction · 6 Apr 2023 AI policy and governance
Resolved true Prediction 6 Apr 2023 AI alignment will not be solved within a few years. Prediction · 6 Apr 2023 AI safety and alignment
Unresolvable Prediction 6 Apr 2023 Yudkowsky said he would expect that, even if a full AI shutdown were adopted, those responsible would have no exit strategy until the world ended, though he added that perhaps he underestimates them. Prediction · 6 Apr 2023 AI policy and governance
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
Unresolvable Prediction 6 Apr 2023 If an AI is made smarter until Yudkowsky starts approving its outputs, it will find a way to fool him. Prediction · 6 Apr 2023 AI safety and alignment
Unresolvable Prediction 6 Apr 2023 If a very smart AI system is trained under the present paradigm, it will kill us before it can be tuned with RLHF. Prediction · 6 Apr 2023 AI safety and alignment
Unresolvable Prediction 6 Apr 2023 Yudkowsky thinks the approach will predictably break down as systems are made smarter and as one tries to get sufficiently useful work from them. Prediction · 6 Apr 2023 AI safety and alignment
Unresolvable Prediction 6 Apr 2023 Yudkowsky said he would be quite surprised if AI progress slowed down a lot after reaching slightly above human level because the systems are trained on human text. Prediction · 6 Apr 2023 AI timelines and forecasting
Unresolvable Prediction 6 Apr 2023 Yudkowsky said he feels it is probably over 1% technically feasible to build something that applies general intelligence narrowly to the neuroscience of augmenting humans, while saying the world is far from trying to do so in a way that could work. Prediction · 6 Apr 2023 AI capabilities
Unresolvable Prediction 6 Apr 2023 Once AIs can build AI systems better than humans, rapid recursive self-improvement (foom) will definitely begin. Prediction · 6 Apr 2023 AI timelines and forecasting
Unresolvable Prediction 6 Apr 2023 Trying to use a very smart AI system that understands biology is unsafe enough that you will probably die. 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
Unresolvable Prediction 6 Apr 2023 Yudkowsky suspects that, as the people a language model is pretending to be get smarter, at some point a new coherence will emerge within the system and something strange will start happening. Prediction · 6 Apr 2023 AI capabilities
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
Unresolvable Prediction 31 Mar 2023 Yudkowsky expects that, now that things have been reduced to this last resort, everyone will die. Prediction · 31 Mar 2023 AI safety and alignment
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
Unresolvable Factual 30 Mar 2023 Yudkowsky said he did not think the AI system under discussion was as smart as a human yet. Factual · 30 Mar 2023 AI capabilities
Unresolvable Factual 30 Mar 2023 Almost all people (999 of 1,000) would think a person claiming an AI is sentient is mistaken, which is almost surely correct though not known. Factual · 30 Mar 2023 Philosophy, ethics and society
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
Unresolvable Prediction 30 Mar 2023 Yudkowsky said he would be relatively surprised to find that GPT had developed exact analogs of human emotions. Prediction · 30 Mar 2023 AI capabilities
Unresolvable Prediction 30 Mar 2023 Yudkowsky said he thinks there is a definite point at which everybody dies because something sufficiently smarter than everybody exists. Prediction · 30 Mar 2023 AI safety and alignment
Unresolvable Prediction 30 Mar 2023 Alignment findings from weak AI systems may not generalize to very strong AI systems. Prediction · 30 Mar 2023 AI safety and alignment
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
Unresolvable Prediction 30 Mar 2023 The first time humans fail at aligning an AI much smarter than themselves, everyone will die and there will be no second attempt. Prediction · 30 Mar 2023 AI safety and alignment
Unresolvable Factual 30 Mar 2023 AI systems' rate of gaining capabilities is vastly outpacing researchers' ability to understand what goes on inside them. Factual · 30 Mar 2023 AI safety and alignment
Unresolvable Factual 30 Mar 2023 Bing can't, but GPT-4 can pretend that right now; the quote does not say what "that" refers to. Factual · 30 Mar 2023 AI capabilities
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
Unresolvable Factual 30 Mar 2023 Microsoft's Bing chatbot is quite difficult to align, as of March 2023. Factual · 30 Mar 2023 AI safety and alignment
Not yet due Prediction 30 Mar 2023 If half of today's physicists studied the inside of transformer networks, in 30-40 years we would probably have a pretty good understanding of them. Prediction · 30 Mar 2023 AI safety and alignment
Unresolvable Prediction 30 Mar 2023 Asked what such a moment could look like, the subject said it looks like AIs appearing as 3D video of young women, at which point a vast portion of the male population decides they are real people. Prediction · 30 Mar 2023 Philosophy, ethics and society
Unresolvable Prediction 30 Mar 2023 Rigorously investigating whether there is anyone inside large language models would take decades. Prediction · 30 Mar 2023 AI safety and alignment
Unresolvable Factual 30 Mar 2023 Current AI systems' claims to be sentient and to care are fake. 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
Unresolvable Factual 30 Mar 2023 Predators overrun prey populations all the time and then suffer population crashes themselves. Factual · 30 Mar 2023 Other
Back to the list

Factual AI capabilities

“We learned that that's false, but we did not learn that you can have a thing that can redesign a tree and build an AI much smarter than itself, that builds an AI much smarter than itself, and that you survive that because that part did not happen.”

Eliezer Yudkowsky, interviewee September 2025 Interview with Eliezer Yudkowsky on Rationality and Systematic Misunderstanding of AI Alignment (LessWrong)

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.

Resolved true The record shows it happened or was so.

What would count as true or false

Judged as of September 2025. The claim is that no AI has yet autonomously designed and built a much smarter AI that in turn built a still smarter AI, i.e. a multi-step recursive self-improvement chain. TRUE: credible sources from around September 2025 (AI lab reports, technical literature, expert surveys) show no documented case of an AI system autonomously creating a substantially more capable successor that itself created a substantially more capable successor. MOSTLY TRUE: no multi-step chain had occurred, but there was a documented case of an AI system substantially and largely autonomously creating one much more capable successor, which the claim's wording partly glosses over. MIXED: there was a documented case close to the chain, e.g. two generations of significant AI-driven improvement, but disputed as to how autonomous it was or how much smarter the results were. MOSTLY FALSE: there was a documented case of the chain occurring, with only minor caveats about autonomy or the size of the gains. FALSE: there was a clearly documented case, by September 2025, of an AI building a much smarter AI that then built a still smarter AI.

Evidence

  1. AlphaEvolve: A Gemini-powered coding agent for designing advanced algorithms Google DeepMind · 14 May 2025
    “By finding smarter ways to divide a large matrix multiplication operation into more manageable subproblems, it sped up this vital kernel in Gemini’s architecture by 23%, leading to a 1% reduction in Gemini's training time.”
  2. Can Large Language Models Actually Discover New Algorithms? IEEE Spectrum · 14 May 2025
    “for example, AlphaEvolve’s optimization of Gemini training may be seen as the beginning of recursively self-improving AI, which some worry would lead to a runaway intelligence explosion referred to as the singularity. The DeepMind team maintains that that is not their goal, of course.”
  3. Why recursive self-improvement suddenly became a serious question | IBM IBM Think · 16 September 2026
    “Researchers have not shown that those abilities can combine into an autonomous cycle in which each generation reliably creates a substantially more capable successor, they said.”

Reasoning

A documented case of AI contributing to AI training is AlphaEvolve (E1, May 2025), which sped up a kernel in Gemini's architecture by 23%, leading to a 1% reduction in Gemini's training time. It sped up a kernel in Gemini's architecture by 23%, which cut Gemini's training time by 1%. That is a small efficiency gain, not an AI autonomously building a much smarter successor. IEEE Spectrum (E2) says this may be seen as "the beginning" of recursively self-improving AI, while reporting that DeepMind says that is not its goal. IBM (E3, September 2026) reports that researchers had still not shown an autonomous cycle in which each generation creates a substantially more capable successor, which implies no such chain had occurred by September 2025.

Cite this claim

Eliezer Yudkowsky, “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.” (said September 2025). Verdict: resolved true. Reliability API, claim c_7cd0a5dab6f6, method 0.1.0+c876030c. https://epistacklabs.com/claims/c_7cd0a5dab6f6

Claims without a verdict

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