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AI FOR SCIENCE · INTERVIEWS

Ineffable's two founders: no human data and no pre-training, first build an agent that learns for itself in simulated worlds

Training Data (Sequoia Capital) · 1:08:02 · Open on YouTube ↗
Guest
David SilverFounder, Ineffable IntelligenceProfile, roles and records →Lasse EspeholtCo-founder, Ineffable IntelligenceProfile, roles and records →
Company
Ineffable IntelligenceOrganisation page: funding, people, research →
Source
Training Data (Sequoia Capital) ↗Published · 1:08:02
Core signal

Silver says Ineffable is betting on no human data and no pre-training: an agent that learns from its own experience in simulated worlds, starting from knowing nothing and aiming to discover things beyond what humans know. He accepts that this costs some performance now in exchange for a higher ceiling.

What this adds

The record has the funding announcement, the site's mission and one brief; the interview adds the method: self-built 'crucible' environments, simple objectives, simulation first, the compute and the team's size, and two dated forecasts: very strong evidence within a year and 'true superintelligence' within three.

Current boundary

No result, benchmark or paper is shown; the evidence he cites is his own earlier AlphaGo-to-AlphaZero work at DeepMind, not Ineffable's. He also says what is learned in simulation should not be expected to transfer directly to the real world. The host's firm, Sequoia, co-led the first round.

01

What they said

  1. A 'superlearner': start from nothing and keep learning past human knowledge

    ▶ 9:54

    Silver splits it into depth and breadth. Depth is starting from knowing nothing and discovering things far beyond what humans know, as humanity collectively went from 'grey mush in our heads' to language, science and mathematics, with no blueprint and no trillion-item dataset. Breadth is being droppable into any stream of experience, simulated, digital or physical. He says no one has cracked this in AI and that it is the essence of what superintelligence needs.

    “a system that can just keep learning and discovering knowledge forever.”David Silver
  2. Giving up human data: a short-term sacrifice

    ▶ 27:28

    He says the bet is to give up the human data and priors everyone relies on: a short-term sacrifice of some performance for a potentially far higher ceiling. He cites his own history: AlphaGo used human data with the team in the loop and took about two years to beat Lee Sedol; AlphaZero gave up the human data and in a few hours surpassed that work, beating the world champion in chess in four hours and, he recalls, taking 'a couple of days' in Go. He says he is not religious about it: weak priors that apply across environments are fine; what he avoids is strong priors encoding everything known about one problem.

  3. Crucibles and simple objectives: not writing down what counts as science

    ▶ 14:00

    Day to day there are two jobs: build a reinforcement-learning stack that runs at massive scale, and build simulated environments they call 'crucibles'. Crucibles are not hand-built puzzles; complexity is meant to emerge from physics engines with millions of interacting objects and millions of interacting agents, and Lasse adds that they want a range, with simple fast ones to iterate on. On objectives, they do not leave a breadcrumb trail toward a chosen outcome; they give agents simple objectives and hope to be surprised, with milestones being the agent rediscovering the steps humans took. He says they have tried many reward functions and has no single answer.

  4. Build it in simulation first, then take the algorithm to the real world

    ▶ 38:13

    He argues that if superintelligence can be built in simulation it will happen ten to a hundred times faster, because simulation parallelises without limit, is reproducible and is the safest place to do it. He agrees with Rich Sutton that what is learned in simulation should not be expected to transfer to the real world, which is far more complex; so the thing to discover in simulation is the superlearner algorithm itself, which would then be applied in the real world, with simulations made ever more faithful to check it. He grants that some things can only be expressed in reality, quantum computation for one. Lasse notes that the weather model MetNet beat physics-based simulation, so simulation has a ceiling.

  5. Compute and team: a cluster, GPUs, twenty people

    ▶ 52:57

    Lasse says they are first customers of the largest cluster on Google Cloud, starting 'by the end of the year' and then 'actually one month from now'; it is Nvidia GPUs, and he notes that on Vera Rubin one rack can act as one machine, which matters for reinforcement learning's fast iteration; simulation, inference and training all run on GPUs rather than large CPU fleets. Silver says many of today's large-scale RL ideas trace back to Lasse's early IMPALA and SEED RL; Lasse says Ineffable uses derivatives of a few such algorithms. The team is 20 people, kept small on purpose, so each has a lot of compute. Silver says that compared with OpenAI's hide-and-seek experiment they 'could probably run experiments that use 100,000 times more compute'.

  6. Safety: study the science of superintelligence in simulation, release into the real world on evidence

    ▶ 43:44

    Silver says alignment that rests on language and human-data priors will reach its limits as agents train further, because they overwhelm the priors and learn to say one thing and do another, and monitoring chains of thought gets harder. His alternative is to study 'the science of superintelligence' in simulation, learning under what conditions a society of superintelligences interacts peacefully, and to share it publicly; monitoring can avoid language, for example 'shadow actions' that show what an agent would do without letting it, or another superintelligence regularising the size of its effects. The company's commitment is to gate anything it does in the real world on enough evidence from that science. He supports pacing the real-world frontier while moving as fast as possible in simulation.

02

What changed

  • Prior public record

    The timeline has no Ineffable entry of its own and /funding does not list it; the site's brief on DeepMind-alumni startups (read 2026-09-26) records the $1.1B seed of 27 April, co-led by Sequoia and Lightspeed with a $5.1B post-money valuation in counsel Cooley's release, and the site's mission, and labels 'without relying on human data' as the company's own phrase and a research programme still to be tested.

    This interview adds

    Silver adds the method: self-built crucible environments, simple objectives instead of hand-written rewards, simulation first and then the algorithm taken to reality, and the trade that giving up human data is a short-term sacrifice. There is still no public capability.

  • Prior public record

    The brief records Fortune's September report of six added cofounders, four from DeepMind, Lasse Espeholt among them; the record has no team size or compute.

    This interview adds

    Silver says the company has hired 20 people in total, kept small on purpose; Lasse says they are first customers of the largest cluster on Google Cloud, on Nvidia GPUs with simulation, inference and training all on GPUs; Silver says they could run experiments with about 100,000 times the compute of OpenAI's hide-and-seek.

  • Prior public record

    Ineffable's site (read 2026-10-24) lists among its beliefs that superintelligence 'can and must be built in a way that is beneficial to humanity' and does not say how.

    This interview adds

    Silver gives a direction: study the science of superintelligence in simulation and share it publicly; monitor without relying on language; and gate real-world action on enough evidence from that science. These are commitments and a research plan, not something built.

03

Why it matters

Whose science is discovered in simulation

Silver says agents in simulation will discover 'their own science about whatever that world is', and he agrees transfer to reality should not be expected. So what Ineffable can show first is a result about a learning algorithm, not new knowledge about our world. That is the opposite trade to Lila's use of real experiments as the verifier: Lila's conclusions are about the real world and each costs an experiment; Ineffable's are cheap, and hold, to start with, only for the simulation.

A milestone design that can be checked

Setting milestones as rediscovering steps humans took (coordination, communication, trade, arithmetic, tools) can be checked by outsiders, who know what the answer looks like. The cost is in the same place: he also says not to leave breadcrumbs, to rely on simple objectives and to hope to be surprised. Which of the two shows up first, and who judges it, decides what 'very strong evidence' will mean.

Reading an interview hosted by an investor

Sequoia co-led the first round and the host is one of the announcement's authors, so the questions run to vision, compute and timing and do not press on existing results; the claims on timing and compute are the guests' own. For this site, the page records what they say, not something independently checked.

04

Claims and boundaries

ClaimWhose voiceWhere it stands

A superlearner should start from nothing, discover far beyond what humans know and be droppable into any stream of experience.

Target

A definition and a target; no demonstration.

AlphaGo used human data and took about two years to beat Lee Sedol; AlphaZero, without human data, surpassed it in hours, beating the world champion in chess in four hours and taking 'a couple of days' in Go.

Industry context

His recollection of his own earlier work at DeepMind, with the Go time hedged as 'I think'; this page did not check DeepMind's papers.

The company has a state-of-the-art large-scale RL stack and is building crucible environments.

Company-reported

No system, environment or evaluation is public.

Rewards will not be written to define 'science' or 'language'; agents get simple objectives and discover complex behaviour.

Target

He says many rewards have been tried with no single answer; no agent has done this yet.

They could run experiments using about 100,000 times the compute of OpenAI's hide-and-seek.

Company-reported

He says 'probably could'; no cluster size or experiment already run is given.

They are first customers of the largest cluster on Google Cloud, starting by the end of the year, which Lasse also calls 'one month from now'.

Company-reported

The two timings do not match (the episode was published on 13 October); no size is given.

The company has hired 20 people in total, kept small on purpose.

Company-reported

His statement; no list.

If superintelligence can be built in simulation it will be ten to a hundred times faster and safest.

Guest's judgment

His judgment; he also grants some things only exist in reality and that transfer should not be expected.

Alignment and monitoring built on language and human-data priors will increasingly fall short as agents get stronger.

Guest's judgment

His view; he says he does not have all the answers and floats shadow actions and supervising superintelligences.

Anything done in the real world will be gated on enough evidence from the science of superintelligence.

Target

A commitment; no standard of evidence is stated and no one is named to judge.

Within a year there will be 'extremely strong evidence' the approach is right; true superintelligence within three years, which he first put at three to five and has pulled in because of coding agents.

Target

He calls it a reasonable range of uncertainty; his definition of superintelligence is given in words, with no measurable criterion.

Whether scaling laws have appeared in their reinforcement learning.

Not yet closed

Pressed, Lasse says scaling laws differ for RL and that it is something they are pushing toward; he does not say they have seen one.

05

What to watch next

  1. Whether within a year there is 'extremely strong evidence' that capability can be learned without human data.

    Would show up as A named capability learned only from the system's own experience, published with the environment, a comparison and the result, in a form outsiders can check; a vision or a financing does not count.Checked on Said: 'within a year'
  2. Whether within three years there is the 'true superintelligence' he defines.

    Would show up as A system autonomously making a result that outside experts accept as beyond what humans know, in at least one of science, mathematics or technology, with the process written down.Checked on Said: 'three years'
  3. The first time an algorithm learned in simulation is applied to a real-world task.

    Would show up as A named physical or digital task, with the simulated method, the real-world result and the gap between them.
  4. Whether research on the science of superintelligence is published and the evidence standard for real-world release is stated.

    Would show up as A paper or post naming the crucibles, experiments and findings, and the concrete standard for 'sufficient evidence' and who judges it.
Source and how it was read

Read 2026.10.24 The full transcript on Sequoia's episode page, with speaker names (the host is Sonya Huang), read in full; the audio and video were not heard. This is Sequoia's own show: Sequoia co-led Ineffable's first round, and the host is one of the two authors of Sequoia's 27 April announcement, which was read. The text of the Alfred Lin X article the author supplied was read through the fxtwitter mirror and matches the announcement on Sequoia's site. The author also pasted YouTube's timestamped transcript, read in full and checked against Sequoia's page on the passages and figures used, where they agree; the timestamp links on this page come from that transcript and were not checked against playback. The release date and length come from YouTube's metadata. On the company side, Ineffable's home page was read. Open the interview ↗Sequoia episode page (with transcript) ↗