Transcript of Demis Hassabis + Google Co-Founder Sergey Brin: AGI by 2030?

Does scale solve all problems, or does it not? So I want to ask you, in terms of the improvement that’s available today, is scale still the star, or is it a supporting actor?

DEMIS HASSABIS: I think I’ve always been of the opinion you need both. You need to scale to the maximum the techniques that you know about. You want to exploit them to the limit, whether that’s data or compute scale. And at the same time, you want to spend a bunch of effort on what’s coming next, maybe six months, a year down the line, so you have the next innovation that might do a 10x leap in some way to kind of intersect with the scale. So you want both, in my opinion. But I don’t know, Sergey, what do you think?

SERGEY BRIN: I mean, I agree. It takes both. You can have algorithmic improvements and simply compute improvements. Better chips, more chips, more power, bigger data centers. I think that historically, if you look at things like the n-body problem and simulating just gravitational bodies and things like that, as you plot it, the algorithmic advances have actually beaten out the computational advances, even with Moore’s law. If I had to guess, I would say the algorithmic advances are probably going to be even more significant than the computational advances. But both of them are coming up now. So we’re kind of getting the benefits of both.

The Future of Data Centers

ALEX KANTROWITZ: And, Demis, do you think the majority of your improvement is coming from building bigger data centers and using more chips? Like, there’s talk about how the world will be just wallpapered with data centers. Is that your vision?

DEMIS HASSABIS: Well, no. Look, I mean, we’re definitely going to need a lot more data centers. It’s amazing that, you know, it still amazes me, from a scientific point of view, we turn sand into thinking machines. It’s pretty incredible. But actually, it’s not just for the training. Now we’ve got these models that everyone wants to use. And actually, we’re seeing incredible demand for 2.5 Pro. And I think Flash, we’re really excited about how performant that is for the incredible sort of low cost.

I think the whole world’s going to want to use these things. And so we’re going to need a lot of data centers for serving. And also for inference time compute. Giving, you know, you saw DeepThink today, 2.5 Pro DeepThink. The more time you give it, the better it will be. And certain tasks, very high value, very difficult tasks, it will be worth letting it think for a very long time. And we’re thinking about how to push that even further. And again, that’s going to require a lot of chips at runtime.

The Power of AI Reasoning

ALEX KANTROWITZ: OK, so you brought up test time compute. We’ve been about a year into this reasoning paradigm. And you and I have spoken about it twice in the past, as something that you might be able to add on to traditional LLMs to get gains. So I think this is like a pretty good time for me to be like, what’s happening? Can you help us contextualize the magnitude of improvement we’re seeing from reasoning?

DEMIS HASSABIS: No, well, we’ve always been big believers in what we’re now calling this thinking paradigm. If you go back to our very early work on things like AlphaGo and AlphaZero, our agent work on playing games, they will all have this type of attribute of a thinking system on top of a model.

And actually, you can quantify how much difference that makes if you look at a game like chess or Go. You know, we had versions of AlphaGo and AlphaZero with the thinking turned off. So it was just the model telling you its first idea. And you know, it’s not bad. It’s maybe like master level, something like that. But then if you turn the thinking on, it’s way beyond world champion level. You know, it’s like a 600 Elo plus difference between the two versions. So you can see that in games, let alone for the real world, which is way more complicated. And I think the gains will be potentially even bigger by adding this thinking type of paradigm on top.

Of course, the challenge is that your models, and I talked about this earlier in the talk, need to be a kind of world model. And that’s much harder than building a model of a simple game, of course. And you know, it has errors in it, and yet those can compound over longer term plans. So, but I think we’re making really good progress on all that, all those fronts.

SERGEY BRIN: Yeah, look, I mean, as Demis said, I mean, DeepMind really pioneered a lot of this reinforcement learning work. And what they did with AlphaGo and AlphaZero, as you mentioned, showed, as I recall, something you would take 5,000 times as much training to match what you were able to do with still a lot of training, and the inference time compute that you were doing would go. So it’s obviously a huge advantage.

And obviously, like most of us, we get some benefit by thinking before we speak. And although—

DEMIS HASSABIS: Not always.

SERGEY BRIN: Not always. I always get reminded to do that. But I think that the AIs, obviously, are much stronger once you add that capability. And I think we’re just at the tip of the iceberg right now, in that sense. It’s been less than a year than these models have really been around. Especially, we think about, obviously, with an AI, during its thinking process, it can also use a bunch of tools, or even other AIs, during that thinking process to improve what the final output is. So I think it’s going to be an incredibly powerful paradigm.

Deep Think and the Path to AGI

ALEX KANTROWITZ: Deep think is very interesting. I’m gonna describe it. I’m trying to describe it right. It’s basically a bunch of parallel reasoning processes working and then checking each other. And then it’s like reasoning on steroids. Now, Demis, you mentioned that the industry needs a couple more advances to get to AGI. Where would you put this type of mechanism? Is this one of those that might get the industry closer?

DEMIS HASSABIS: I think so. I think it’s maybe part of one. Shall we say? And there are others too, that we need to, maybe this can be part of improving reasoning. Where does true invention come from, where you’re not just solving a math conjecture, you’re actually proposing one, or hypothesizing a new theory in physics. I think we don’t have systems yet that can do that type of creativity. I think they’re coming. And these types of paradigms might be helpful in that, things like thinking.

And then probably many other things. I mean, I think we need a lot of advances on the accuracy of the world models that we’re building. I think you saw that with VO, the potential VO3 of how, it amazes me, like how it can intuit the physics of the light and the gravity. Having someone who, I used to work on computer games, not just the AI, but also graphics engines in my early career. And remember having to do all of this by hand, and program all of the lighting and the shaders and all of these things. Incredibly complicated stuff we

ALEX KANTROWITZ: I saw you shared an image of a frying pan with some onions and some oil. I hope you all like that. There was no subliminal messaging about that?

SERGEY BRIN: Not really, just maybe a subtle message.

Defining AGI

ALEX KANTROWITZ: So we’ve said the word AGI, or the acronym AGI a couple times. There’s, I think, a movement within the AI world right now to say, let’s not say AGI anymore. The term is so overused as to be meaningless. But Demis, it seems like you think it’s important. Why?

DEMIS HASSABIS: Yeah, I think it’s very important, but I think, I mean, maybe I need to write something about this also with Shane Legg, who’s our chief scientist, who was one of the people who invented the term 25 years back. I think there’s sort of two things that are getting a little bit conflated. One is like, what can a typical person do, an individual do? And we can, you know, we’re all very capable, but we can only do however capable we are. There’s only a certain slice of things that one is expert in, right?

And, or, you know, you could say, what can you do, what like 90% of humans can do? That’s obviously going to be economically very important. And I think from a product perspective, also very important. So it’s a very important milestone. So maybe we should say that’s like, you know, typical human intelligence.

But what I’m interested in, and what I would call AGI is really a more theoretical construct, which is what is the human brain as an architecture able to do, right? And that’s, the human brain’s an important reference point, because it’s the only evidence we have, maybe in the universe, that general intelligence is possible. And there, it would have to be able to, you’d have to show your system was capable of doing the range of things, even the best humans in history were able to do with the same brain architectures. Not one brain, but the same brain architecture. So what Einstein did, what Mozart was able to do, what Marie Curie, and so on. And that, it’s clear to me, today’s systems don’t have that.

And then the other thing that, why I think it’s sort of overblown the hype today on AGI, is that our systems are not consistent enough to be considered to be fully general yet. They’re quite general, so they can do, you know, thousands of things. You’ve seen many impressive things today. But every one of us have experience with today’s chatbots and assistants. You can easily, within a few minutes, find some obvious flaw with them. Some high school math thing that it doesn’t solve, you know, some basic game it can’t play. It’s not very difficult to find that, those holes in the system.

And for me, for something to be called AGI, it would need to be consistent, much more consistent across the board than it is today. It should take like a couple of months for maybe a team of experts to find a hole in it, an obvious hole in it. Whereas, you know, today it takes an individual minutes to find that.

Will One Company Win the AGI Race?

ALEX KANTROWITZ: Sergey, this is a good one for you. Do you think that AGI is going to be reached by one company and it’s game over? Or could you see Google having AGI, OpenAI having AGI, Anthropic having AGI, China having AGI?

SERGEY BRIN: Wow, that’s a great question. I mean, I guess I would suppose that one company or country or entity will reach AGI first. Now, it is a little bit of a, you know, kind of a spectrum. It’s not like a completely precise thing. So it’s conceivable that there will be more than one roughly in that range at the same time.

After that, what happens, I mean, I think it’s very hard to foresee, but you could certainly imagine there’s going to be multiple entities that come through. And in our AI space, you know, we’ve seen whatever, when we make a certain kind of advance, like other companies are quick to follow and vice versa. When other companies make certain advances, it’s a kind of a constant leapfrog. So I do think there’s an inspiration element that you see, and that would probably encourage more and more entities to cross that threshold.

ALEX KANTROWITZ: Demis, what do you think?

DEMIS HASSABIS: Well, I think we probably do. I think it is important for the field to agree on a definition of AGI. So maybe we should try and help that to coalesce. Assuming there is one, you know, there probably will be some organizations that get there first. And I think it’s important to, that those first systems are built reliably and safely.

And I think after that, if that’s the case, you know, we can imagine using them to shard off many systems that have safe architectures sort of built under, you know, sort of provably underneath them. And then you could have, you know, personal AGI’s and all sorts of things happening. But it’s, you know, it’s quite difficult. As Sergey says, it’s pretty difficult to predict, sort of see beyond the event horizon to predict what that’s going to be like.

Emotion and AGI

ALEX KANTROWITZ: Right, so we talked a little bit about the definition of AGI. And a lot of people have said AGI must be knowledge, right, the intelligence of the brain. What about the intelligence of the heart? Demis, briefly, does AI have to have emotion to be considered AGI? Can it have emotion?

DEMIS HASSABIS: I think you will need to understand emotion. I don’t know if, I think it will be a sort of almost a design decision if we wanted to mimic emotions. I think there’s no, I don’t see any reason why it couldn’t in theory. But it might be different or it might be not necessary or in fact not desirable for them to have the sort of emotional reactions that we do as humans.

So I think, again, it’s a bit of an open question as we get closer to this AGI timeframe and, you know, sort of events, which I think is more on a five to 10 year time scale. So I think we have a bit of time, not much time, but some time to research those kinds of questions.

Self-Improving AI Systems

ALEX KANTROWITZ: When I think about how the timeframe might be shrunk, I wonder if it’s going to be the creation of self-improving systems. And last week, I’m almost fell out of my chair reading this headline about something called Alpha Evolve, which is an AI that helps design better algorithms and even improve the way LLMs train. So, Demis, are you trying to cause an intelligence explosion?

DEMIS HASSABIS: No, not an uncontrolled one. Look, I think it’s an interesting first experiment. It’s an amazing system, a great team that’s working on that, where it’s interesting now to start pairing other types of techniques, in this case evolutionary programming techniques, with the latest foundation models, which are getting increasingly powerful. And I actually want to see, in our exploratory work, a lot more of these kind of combinatorial systems and sort of pairing different approaches together.

And you’re right, that is one of the things, the self-improvement, someone discovering a kind of self-improvement loop would be one way where things might accelerate further than they’re even going today. And we see that before with our own work, with things like AlphaZero, learning chess and Go and any two-player game from scratch within less than 24 hours, starting from random with self-improving processes.

So we know it’s possible, but again, those are in quite limited game domains, which are very well described. So the real world is far messier and far more complex. So it remains to be seen if that type of approach can work in a more general way.

Sergey’s Return to Google

ALEX KANTROWITZ: Sergey, we’ve talked about some very powerful systems and it’s a race. It’s a race to develop these systems. Is that why you came back to Google?

SERGEY BRIN: I mean, I think as a computer scientist, it’s a very unique time in history. Like, honestly, anybody who’s a computer scientist should not be retired right now and should be working on AI. That’s what I would just say. I mean, there’s just never been a greater sort of problem and opportunity, a greater cusp of technology.

So I wouldn’t say it’s because of the race, although we fully intend that Gemini will be the very first AGI, to clarify that. But to be immersed in this incredible technological revolution, I mean, it’s unlike, you know, I went through sort of the web 1.0 thing. It was very exciting. And we had mobile, we had this, we had that. But I think this is scientifically far more exciting. And I think ultimately the impact on the world is

SERGEY BRIN: …going to be even greater. And as much as the web and mobile phones have had a lot of impact, I think AI is going to be vastly more transformative.

ALEX KANTROWITZ: So what do you do day to day?

SERGEY BRIN: I think I torture people like Demis. It was amazing, by the way. He tolerated me crashing this fireside. I’m across the street pretty much every day. And there are people who are working on the key Gemini text models, on the pre-training, on the post-training. Mostly those, I periodically delve into some of the multimodal work. VO3 is something you’ve all seen. But I tend to be pretty deep in the technical details. And that’s a luxury I really enjoy, fortunately, because guys like Demis are minding the shop. And yeah, that’s just where my scientific interest is. It’s deep in the algorithms and how they can evolve.

Google’s Approach to AI Agents

ALEX KANTROWITZ: OK, let’s talk about the products a little bit, some that were introduced recently. I just want to ask you a broad question about agents, Demis. Because when I look at other tech companies building agents, what we see in the demos is usually something that’s contextually aware, has a disembodied voice, is often interacted with on a screen. When I see DeepMind and Google demos, oftentimes it’s through the camera. It’s very visual. There was an announcement about smart glasses today. So talk a little bit about, if that’s the right read, why Google is so interested in having an assistant or a companion that is something that sees the world as you see it.

DEMIS HASSABIS: Well, it’s for several reasons, several threads come together. So as we talked earlier, we’ve always been interested in agents. That’s actually the heritage of DeepMind, actually. We started with agent-based systems in games. We are trying to build AGI, which is a full general intelligence. Clearly, that would have to understand the physical environment, the physical world around you. And two of the massive use cases for that, in my opinion, are a truly useful assistant that can come around with you in your daily life, not just stuck on your computer or one device. It needs to… We want it to be useful in your everyday life for everything. And so it needs to come around you and understand your physical context.

And then the other big thing is I’ve always felt for robotics to work, you sort of want what you saw with Astra on a robot. And I’ve always felt that the bottleneck in robotics isn’t so much the hardware, although obviously there’s many, many companies working on fantastic hardware and we partner with a lot of them, but it’s actually the software intelligence that I think is always what’s held robotics back. But I think we’re in a really exciting moment now where finally, with these latest versions, especially 2.5 Gemini, and more things that we’re going to bring in, this kind of VO technology and other things, I think we’re going to have really exciting algorithms to make robotics finally work and realise its potential, which could be enormous.

So I think there’s… And then in the end, AGI needs to be able to do all of those things. So for us, and that’s why you can see we always had this in mind, that’s why Gemini was built from the beginning, even the earliest versions, to be multimodal. And that made it harder at the start because it’s harder to make things multimodal than just text only. But in the end, I think we’re reaping the benefits of those decisions now, and I see many of the Gemini team here in the front row, of the correct decisions we made. They were the hardest decisions, but we made the right decisions. And now you can see the fruits of that with all of what you’ve seen today, actually.

Lessons from Google Glass

ALEX KANTROWITZ: Sergey, I’ve been thinking about whether to ask you a Google Glass question.

SERGEY BRIN: Oh, fire away.

ALEX KANTROWITZ: What did you learn from Glass that Google might be able to apply today, now that it seems like smart glasses have made a reappearance?

SERGEY BRIN: Wow, yeah, great question. I learned a lot. I mean, I definitely feel like I made a lot of mistakes with Google Glass, I’ll be honest. I am still a big believer in the form factor, so I’m glad that we have it now. And now it looks like normal glasses, doesn’t have the thing in front. I think there was a technology gap, honestly. Now in the AI world, the things that these glasses can do to help you out without constantly distracting you, that capability is much higher.

There’s also just, I just didn’t know anything about consumer electronics supply chains, really, and how hard it would be to build that and have it be at a reasonable price point, managing all the manufacturing, so forth. This time we have great partners that are helping us build this. So that’s another step forward. What else can I say? I do have to say, I missed the airship with the wing-suiting skydivers for the demo. Honestly, it would have been even cooler here at Shoreline Amphitheater than it was up in Moscone back in the day, but maybe we’ll have to, we should probably polish the product first this time. We’ll get it ready and available, and then we’ll do a really cool demo.

DEMIS HASSABIS: So that’s probably a smart move. Yeah, what I will say is, I mean, look, we’ve obviously an incredible history of glass devices and smart devices, so we can bring all those learnings to today. And I’m very excited about our new glasses, as you saw. But what I’m always talking to our team and Sharam and the team about is that, I mean, I don’t know if Paseko would agree, but I feel like the universal assistant is the killer app for smart glasses. And I think that’s what’s going to make it work, apart from the fact that the hardware technology has also moved on and improved a lot. I feel like this is the actual killer app, the natural killer app for it.

Video Generation and Model Quality

ALEX KANTROWITZ: OK. Briefly on video generation, I sat in the audience in the keynote today and was fairly blown away by the level of improvement we’ve seen from these models. And I mean, you had filmmakers talking about it in the presentation. I want to ask you, Demis, specifically about model quality. If the internet fills with video that’s been made with artificial intelligence, does that then go back into the training and lead to a lower quality model than if you were training just from human-generated content?

DEMIS HASSABIS: Yeah, look, there’s a lot of worries about this so-called model collapse. I mean, video is just one thing, but in any modality, text as well. There’s a few things to say about that. First of all, we’re very rigorous with our data quality management and curation. We also, at least for all of our generative models, we attach SynthID to them. So there’s this invisible AI-actually-made watermark that is pretty very robust, has held up now for a year, 18 months since we released it. And all of our images and videos are embedded with this watermark. So we can detect, and we’re releasing tools to allow anyone to detect these watermarks and know that that was an AI-generated image or video. And of course, that’s important to combat deepfakes and misinformation, but it’s also, of course, you could use that to filter out, if you wanted to, whatever was in your training data.

So I don’t actually see that as a big problem. Eventually, we may have video models that are so good, you could put them back into the loop as a source of additional data. Synthetic data, it’s called. And there, you’ve just got to be very careful that you’re actually creating from the same distribution that you’re going to model. You’re not distorting that distribution somehow. The quality is high enough. We have some experience of this in a completely different way with things like AlphaFold, where there wasn’t actually enough real experimental data to build the final AlphaFold. So we had to build an earlier version that then predicted about a million protein structures. And then we selected, it had a confidence level on that, we selected the top three, 400,000 and put them back in the training data.

So there’s lots of, it’s very cutting-edge research to like mix synthetic data with real data. So there are also ways of doing that. But in terms of the video sort of generator stuff, you can just exclude it if you want to, at least with our own work. And hopefully other gen media companies follow suit and put robust watermarks in. Also, obviously first and foremost to combat deepfakes and misinformation.

ALEX KANTROWITZ: Okay, we have four minutes. I got four questions left. We now move to the miscellaneous part of my questions. Let’s see how many we can get through and as fast as we can get through them. Let’s go to Sergey with this one. What does the web look like in 10 years?

SERGEY BRIN: I mean, boy, I think 10 years because of the rate of progress in AI is so far beyond anything we can see. Not just the web. I mean, I don’t know. I don’t think we really know what the world looks like in 10 years.

ALEX KANTROWITZ: Okay, Demis?

DEMIS HASSABIS: Well, I think that’s a good answer. I do think the web, I think in nearer term, the web is going to change quite a lot if you think about an agent-first web. Does it really need to, it doesn’t necessarily need to see renders and things like we do as humans using the web. So I think things will be pretty different in a few years.

ALEX KANTROWITZ: Okay, this is kind of an under-over question. AGI before 2030 or after 2030?

SERGEY BRIN: 2030, boy, you really kind of put it on that fine line. I’m going to say before.

ALEX KANTROWITZ: Before?

SERGEY BRIN: Yeah.

ALEX KANTROWITZ: Demis?

DEMIS HASSABIS: I’m just after.

ALEX KANTROWITZ: Just after?

DEMIS HASSABIS: Yeah.

ALEX KANTROWITZ: Okay. No pressure, Demis.

DEMIS HASSABIS: No, exactly. I have to go back and get working harder.

SERGEY BRIN: I can ask for it. He needs to deliver it.

DEMIS HASSABIS: Yeah, exactly. Stop sandbagging.

SERGEY BRIN: We need that this week.

DEMIS HASSABIS: That’s true. I’ll come to the review.

Using AI in Job Interviews

ALEX KANTROWITZ: All right, so would you hire someone that used AI in their interview? Demis?

DEMIS HASSABIS: Oh, in their interview? Depends how they used it. I think using today’s models, tools, probably not. But I think that would be, well, it depends how they would use it, actually. I think it’s probably the answer.

ALEX KANTROWITZ: Sergey?

SERGEY BRIN: I mean, I never interviewed at all, so. I don’t know. I feel it would be hypocritical for me to judge people exactly how they interview.

DEMIS HASSABIS: Yeah, I haven’t either, actually. So just a snap on that. I’ve never done a job interview.

Are We Living in a Simulation?

ALEX KANTROWITZ: Okay. So, Demis, I’ve been reading your tweets. I put a very interesting tweet up where there was a prompt that created some sort of natural scene. Oh, yeah. Here was the tweet. “Nature to simulation at the press of a button does make you wonder,” with a couple of emojis. And people ran with that and wrote some headlines saying, Demis thinks we’re in a simulation. Are we in a simulation?

DEMIS HASSABIS: Not in the way that, you know, Nick Bostrom and people talk about. I think, I do think, though, this, so I don’t think this is some kind of game, even though I wrote a lot of games. I do think that, ultimately, underlying physics is information theory. So I do think we’re in a computational universe, but it’s not just a straightforward simulation. I can’t answer you in one minute. But I think the fact that these systems are able to model real structures in nature is quite interesting and telling. And I’ve been thinking a lot about our work we’ve done with AlphaGo and AlphaFold and these types of systems. I’ve spoken a little bit about it. Maybe at some point I’ll write up a scientific paper about what I think that really means in terms of what’s actually going on here in reality.

ALEX KANTROWITZ: Sergey, you want to make a headline?

SERGEY BRIN: Well, I think that argument applies recursively, right? If we’re in a simulation, then by the same argument, whatever beings are making the simulation are themselves in a simulation for roughly the same reasons, and so on and so forth. So I think you’re going to have to either accept that we’re in an infinite stack of simulations or that there’s got to be some stopping criteria.

ALEX KANTROWITZ: And what’s your best guess?

SERGEY BRIN: I think that we’re taking a very anthropocentric view. Like when we say simulation in the sense that some kind of conscious being is running a simulation that we are then in and that they have some kind of semblance of desire and consciousness that’s similar to us, I think that’s where it kind of breaks down for me. So I just don’t think that we’re really equipped to reason about sort of one level up in the hierarchy.

ALEX KANTROWITZ: Okay, well, Demis, Sergey, thank you so much. This has been such a fascinating conversation. Thank you.

DEMIS HASSABIS: Thank you all.

ALEX KANTROWITZ: All right. Thank you.

DEMIS HASSABIS: Pleasure.

SERGEY BRIN: Thank you.

Related Posts

• Why eSIMs Are the Smart Choice for Mobile Businesses
• Transcript: Elon Musk and Jensen Huang Talk AI at U.S.-Saudi Investment Forum – 11/19/25
• The Minds of Modern AI: Jensen Huang, Geoffrey Hinton, Yann LeCun & the AI Vision of the Future (Transcript)
• Transcript: NVIDIA CEO Jensen Huang’s Keynote At GTC 2025
• Mo Gawdat: How to Stay Human in the Age of AI @ Dragonfly Summit (Transcript)