Google NotebookLM’s Raiza Martin and Jason Spielman on Creating Delightful AI Podcast Hosts and the Potential for Source-Grounded AI

NotebookLM from Google Labs has become the breakout viral AI product of the year. The feature that catapulted it to viral fame is Audio Overview, which generates eerily realistic two-host podcast audio from any input you upload—written doc, audio or video file, or even a PDF. But to describe NotebookLM as a “podcast generator” is to vastly undersell it. The real magic of the product is in offering multi-modal dimensions to explore your own content in new ways—with context that’s surprisingly additive. 200-page training manuals become synthesized into digestible chapters, turned into a 10-minute podcast—or both—and shared with the sales team, just to cite one example. Raiza Martin and Jason Speilman join us to discuss how the magic happens, and what’s next for source-grounded AI. Hosted by: Sonya Huang and Pat Grady, Sequoia Capital

Speaker names marked ? are inferred from speaking time and the show’s known hosts — they are not voice-verified.

• 0:00Speaker 00

  Hey everyone, we're here on Training Data.

• 0:02Speaker 01

  It's great to be here. I'm a longtime listener and fan of Sequoia Capital.

• 0:06Speaker 00

  Pretty exciting to have us, the hosts of another podcast, join as guests.

• 0:10Speaker 01

  Yeah, I really just want to say a huge, huge thank you. Thanks for having us on the show.

• 0:15Speaker 00

  Yeah, seriously. Thank you to Sonya and Pat for having us.

• 0:18Speaker 01

  I mean, it sounds like we're on the show because we've had lots of listeners ourselves, listeners of Deep Dive.

• 0:22Speaker 00

  Oh yeah, we've made a ton of audio overview since we launched, so it's nice to get to talk about it.

• 0:26Speaker 01

  Definitely a cool experience getting to be here.

• 0:28Speaker 00

  And exciting to share what we're going to do next.

• 0:30Speaker 01

  Exactly. We'll keep learning and getting better for you.

• 0:34Speaker 00

  We're glad you're along for the ride.

• 0:36Speaker 01

  So yeah, keep listening.

• 0:37Speaker 00

  Keep listening and stay curious. We promise to keep diving deep and bringing you even better options in the future.

• 0:45Speaker 01

  Stay curious.

• 1:03Speaker 02

  Two weeks ago, a mysterious experimental product from Google became the talk of the town. Notebook LM, an AI-powered research tool that went viral for its ability to create staggeringly and hilariously realistic podcasts from any sorts of material. Today, we're excited to feature Raiza Martin and Jason Spielman, the product and design leads on Notebook LM at Google. We talked to Raiza and Jason about the inspiration for the product, the development process for a project like this inside a large organization like Google, the surprising use cases that have emerged, and what's next for Notebook LM.

• 1:39Speaker 02

  Raiza, Jason, thank you so much for joining us today, and we're glad that we could get you on today before your AI podcast hosts take over the podcasting world and put us out of a job. So thank you for joining us. Thank you for having us. I'd love to start by asking, you know, people are calling Notebook LM "Google's ChatGPT moment." It was an experimental product, kind of in preview mode, and just went virals. The GPUs are going brrr. You guys are, you know, the talk of the town. Do you agree with that take?

• 2:08Speaker 03

  I mean, ChatGPT was was pretty big for me. And so to imagine the comparison there for me feels a little bit like, whoa, is it? But I think what we're seeing from a lot of people is that it's having a similar impact of like, wow, this is AI, this is what AI can do. So that's been really cool.

• 2:25Speaker 04

  Yeah, and I think I would agree in some sense that the first time I listened to an audio overview, you know, when that second host came on, it really was like a mind blowing experience. But I think it's also like at the underlying layer, like the fact that we have Gemini 1.5 Pro, digesting all this really complicated information and spitting it out in a way that's pretty concise. I think like the combo of those to me is definitely like a pretty unbelievable moment.

• 2:52Speaker 02

  Just for everyone who's listening, what what is Notebook for anybody that hasn't played with the products yet?

• 2:56Speaker 03

  Yeah, Notebook is an AI powered research and writing tool. But I think nowadays it's more commonly known as upload a source and then it will generate an audio overview for you or a podcast.

• 3:08Speaker 02

  And did that happen by accident? Like, did you start out wanting to build a, you know, a podcast host killer? Or did that did that come out by accident somehow?

• 3:17Speaker 03

  I think, you know, honestly, we were always working on the different modalities for output. I think voice was the next one and we chose dialogue. Did we know that it was going to be a killer? I'd say no. I think I thought it was pretty magical, but the way that it's really landed with people has been delightful and surprising.

• 3:36Pat Grady?

  Boy, and I know you guys have been working on Notebook LM for a while. Can you take us back to the beginning of the project? You know, what was the initial idea? How did it come to be?

• 3:44Speaker 03

  Yeah, I mean, I remember I was working on AI Test Kitchen and this was last year. And Notebook actually started as a 20% project. We had one engineer who had been working on something called Talk to Small Corpus. And super funny. Super catchy.

• 4:03Pat Grady?

  Great consumer brand.

• 4:04Speaker 03

  I was like, what is a corpus? But then I would chat with him and he was like, hey, you know, it's really the idea that you can use LLMs to talk to your data, try to extract stuff from it. And I was like, oh, that's super interesting. Started thinking about, okay, what are the practical use cases here? And I actually went to school as an adult learner. And to me, I was like, wait a second. If I could use an LLM and I understood what LLMs could do, and I could use this maybe to talk to something like a textbook. Oh, this is pretty exciting. I could see how that could change my life. It could change lots of lives. And that's when we started really revving on like, hey, what do we build to introduce the first version of this to people? And, you know, it was in May of 23 that we introduced Project Tailwind.

• 4:49Speaker 03

  And it was just that. You uploaded a source, a PDF, you can chat with it.

• 4:53Speaker 04

  Yeah, I think that the fact that we are source grounded is what makes the product so unique. I think even when I started thinking about this project, I didn't realize that everything in my life that I create often has some sort of prior artifact or document that I use to create something new. And so I think, you know, right now, at least, I would call this like a source grounded tool. But we're really becoming a source grounded tool for creation and a bunch of other stuff as well.

• 5:21Speaker 02

  Are there any stats you can share about Notebook LM?

• 5:24Speaker 03

  I think what I'll share is that we were on a steady growth path before audio overviews. But since we launched it, it's sort of rapidly accelerated. And that's been really exciting. It's been a really good hook to bring people into the product. I think the other thing I'll say is that while it brings people in, people generally stay for the rest of the features. And that's been also really interesting to see in terms of like what people are trying to get out of a tool like Notebook.

• 5:51Speaker 02

  So the podcast or the audio overview experience is absolutely magical. Can you tell us a little bit about how it works behind the scenes? Like, how did you make it so lifelike? How did you make it? How do you make the dialogue so good and engaging? It just draws you in. Like, how do you do it?

• 6:05Speaker 03

  Yeah, I mean, first I'll tell you, it was a lot of work. There was a lot of teamwork. There is a lot of craftsmanship that really went into it. But at the heart of it is really Google's models. You've got Gemini 1.5, which is such an incredible model in terms of taking all of that data that you give to Notebook LM and then producing something new out of it. And then you have the voice models, the audio models that back Notebook LM. I'd say the real sort of powerhouse between those two is something we've built called Content Studio. And that's really what brings to life sort of the editorial, right? Between you bringing your content and then coming out with the podcast, there's some editorial liberty that we take with the studio.

• 6:48Speaker 02

  And so in the future, do you see yourself exposing the studio out to people? You know, make this, make this one funnier, make, make this one more serious?

• 6:56Speaker 03

  So I think that we hear a lot, like particularly because so many people are using it. So many people are delighted by it. I think the next step is then people want the knobs, right? They want to be able to control it. And this is where, you know, my gut reaction was, okay, let's ship the knobs. But I'm trying to have a little bit more discipline in thinking that, hey, you know, people fell in love with it because it was delightful, it was magical. How do I ship delightful and magical knobs?

• 7:25Speaker 04

  Totally.

• 7:26Speaker 03

  You know, there's only so much I can do, but, but I think there's a way. And so I'm very interested in doing that.

• 7:32Speaker 04

  I actually do think part of the explosion of audio reviews was the fact it was a simple one click experience. You know, I was on the phone with my grandma, trying to explain to her how to use it. And it actually didn't take any explanation, you know? I'm like, okay, drop in a source. She's like, oh, I see, I click this button to generate it. I think that the, the ease of creation really actually is what catalyzed so much explosion. And so I think when we, as we think about adding these knobs, I think we want to do it in a way that's very intentional.

• 8:01Speaker 03

  Also, just like fun.

• 8:03Speaker 02

  You mentioned people come for the podcast and then stay for everything else. What are some of the best use cases you've seen for the everything else?

• 8:10Speaker 03

  I think I'd say one of the most surprising ones, I talked a little bit about the educational use case. It was very personal to me and I saw a lot of students and a lot of educators using Notebook LM, but what's been surprising is to see the amount of people that are using Notebook LM at work. So one good example is we run, we ran a pilot case study inside of Google. And so within the ads team, we have a lot of ad sellers, ad specialists, and I didn't know this, but for these ad sellers, a lot of their sales training and documentation are hundreds of pages long. I was just like, how does anybody learn this, right? And then the stuff changes all the time. And so it's very hard to keep track of how something works, you know, well enough such that you can sell it.

• 8:56Speaker 03

  And what the sales teams normally do, or before Notebook LM, what they would do is they would ping each other. They'd be like, hey, Joe, right? How does this thing work? How do I position it for this client? You wait for Joe to respond and then you're like, okay, let me copy paste this into an email, fit a little bit, and that was it. But it turns out, people like Joe, who have a lot of that knowledge and read all of this documentation, they build the notebooks and then they distribute it to their sales associates. And then that's hundreds of people automatically that are using the notebook because now they don't have to ping Joe. And that's really interesting to me because I was like, oh, it's like a really simple use case. And then there's so much more that you can really build on top of that.

• 9:38Speaker 04

  Totally. Actually, just here, I was talking to a friend who's in sales, who was like, dude, it's great. I made this whole notebook and I, when I'm on calls, I don't have to answer, I can quickly ask and get a response. And so I think that this idea of knowledge distribution is really helpful for large sales team or data, data centers and stuff. I think another use case that I also think is really interesting that actually you may align with is I have a lot of friends who work in venture and PE. And this idea of a confidential information memorandum, a SIM, you know, I had never heard of this before. But I have a friend who, he's like, this is my whole job is basically going through these packets of information. And so what I do is I take these, you know, these documents I receive or slides, I put it in a notebook.

• 10:22Speaker 04

  And I'm able to now way faster than before, go through all this fairly complex information. And I think that he was, you know, he was telling me he like 10x'd his job speed, you know, which is great. And it's just, this is empowering him to be faster.

• 10:36Speaker 02

  Podcast host and venture capital, you are really going after our jobs.

• 10:41Speaker 04

  We're helping out your jobs. I don't think, yeah.

• 10:44Speaker 02

  What have been the moments that have surprised you the most? For me, it was, you know, the moment where the AI hosts kind of realized that they're AI. That was like, it's really cool moments, but what have been the moments along the way that have surprised you the most?

• 10:56Speaker 03

  I mean, I'll, I'll start. I was, I was going to bed. This was last weekend, I think, or just several days ago. And I was on Twitter, probably not healthy to be doing this before bed, but I was checking.

• 11:08Speaker 02

  Twitter is fire, by the way.

• 11:11Speaker 03

  I was scrolling through and I saw the poop fart one. If folks haven't heard it, I also now I'm just like.

• 11:19Speaker 04

  This is a very important mention, by the way. Like, if you haven't heard it, you really do need to understand how magical this one is.

• 11:24Speaker 03

  Okay, if folks have not heard the poop fart one, somebody decided. Somebody decided they were going to upload a document where the only words in the doc were poop and fart over and over and over and over again. So it was a pretty lengthy doc, but it was just those two words. And I saw that's what they had done with it. They described it and I was like, oh, man. Should I listen now? It's 11 o'clock. If I tap this and it's a safety flag, I'm not going to be able to go to bed. Right? Because I'm going to have to open a bug. I'm going to ping the engineers. It's like, hey, we got this thing going on. I was like, all right, I'll just listen. And it's actually unbelievable.

• 12:00Speaker 04

  I also, like, I saw it and I was like, oh, like, we, let's, let's, let's see what this is going to be.

• 12:05Speaker 03

  Yeah.

• 12:06Speaker 04

  And you listen, you're like, oh, this is, this is fantastic. Like, this is even better than I could have ever imagined.

• 12:11Speaker 03

  It was one of those ones where I was like, well done, Notebook LM.

• 12:13Speaker 04

  Yeah.

• 12:13Speaker 03

  You've got a good little guy.

• 12:14Speaker 04

  We're solving the right problems.

• 12:17Speaker 03

  Amazing. What design choices have you made that, that have made Notebook work so well and so intuitive for people?

• 12:25Speaker 04

  You know, I think that, I clarify, we're still making those decisions. I think right now, we're very much in the process of, you know, launching quickly and then working closely with our users to understand what's best and what they want. You know, tech is evolving so fast right now that it's really hard to know what's even possible. And so I think that we're really pushing for this model where we launch quickly and then work kind of alongside our users to build the best product. But to answer your question more specifically, I think that one thing that we've done that I think was almost a happy accident in a way was make that left source panel really clear. I think that we are a source grounded project and we need to make that clear, that you're talking to the sources that you've uploaded.

• 13:09Speaker 04

  And so I think that having those sources there on the left is like a pretty crucial part of this project. I do also think, though, as I was mentioning earlier, audio overviews, being one click, seem to actually pay off, that it would be like really leaned into the simple experience. But that being said, there's a lot more coming and we're actively working with users to improve the project, product.

• 13:31Speaker 03

  I think one thing that I'll, I'll chime in in terms of like design choices and really, I think on the product prioritization sort of side of things, is really thinking through, what does it take to make something new intuitive? And it's really hard, especially something as nuanced as like, oh, first you have to upload a source. Like, users generally like balk at that step of like, why? Right? Like, I don't have to upload a source to ChatGPT. I don't have to upload a source to Gemini. It just works. And so I think we still have a lot of work to do around the it just works category.

• 14:07Speaker 02

  What do you think are the biggest challenges remaining as you kind of bring people on to this new AI native experience?

• 14:14Speaker 04

  Yeah, I think that we're kind of in this quote unquote skeuomorphic era of AI design. And I think to explain skeuomorphism, it's when a virtual object reflects a real world object. And that was seen in early iOS, when the Notes app had a leather bounding at the top and the pad was yellow. And that was made to kind of ease users into this virtual world from the physical world. I think now we're seeing something similar with AI, where we need to build UIs that help meet users where they are. And I think right now, we're doing our best to kind of be really creative and think about these new kind of crazy experiences, while also understanding that many of these users, this is their first time interacting with artificial intelligence.

• 14:57Speaker 02

  How do you think about, you know, one thing I think Midjourney has done extremely well is just making it easy to, you know, get over the blank wall prompt problem. And so like, to me, that's something that Midjourney has done extremely well. Are there any other applications that have kind of approached some of these UI challenges that you admire?

• 15:16Speaker 03

  I have one recently. I just tried Pika. And I really love the Pika effects, where you can see exactly what's going to happen to your image if you if you upload one. Because Pika is similar in the to the extent that you have to upload something and that you have to maybe write a prompt to choose an effect. And I think it was really well done, where it's like, hey, here's a preview, right? It will squish the thing. I was like, oh, this is fascinating. And of course, I uploaded, there was like, one that was like cake. I uploaded a drink, a picture of a drink. And I was like, make it cake. And just like the anticipation of the drink is going to become cake. I was like, come on, come on, come on. I was like, should I pay for it now? It was like my first generation, too. I was ready to pay for it. That's how I knew. It's like, oh, like, there's definitely

• 16:01Speaker 03

  something there about show the user what's on the flip side, that I think really incentivizes the user to not only, you know, give you the image, but like, they're really excited to see what happens. And then, you know, if you're me, you're like, take my $10. So it's really effective.

• 16:19Speaker 04

  You know, I think for me, I love Claude artifacts. I think they've done such an amazing job of co-creation. We've talked a lot about writing co-creation. And it was awesome to see kind of others in the space thinking about that as well. I think that right now, as I was just briefly mentioning, like, we're in this space where we want to equal the hierarchy between, you know, AI and human. And I think we definitely don't want to take your jobs. We just want to help support your jobs, you know? And I think that Claude artifacts was like a perfect example of that in my mind, which was, cool, you can talk to the chat, but also start building out something on this right side as well.

• 16:55Speaker 02

  How do you think your product kind of, you know, compare and contrast to the approach that Claude has taken? Like, do you think it's, you know, similar things that you're going after? Or how do you think about the differences?

• 17:05Speaker 04

  I mean, I think first and foremost, right now, at least, we're a source grounded tool, which kind of immediately makes us a bit different. That being said, I think we're thinking a lot about creation broadly, utilizing the sources that you've uploaded.

• 17:19Speaker 03

  Well, I think, I think to that point, like, the contextualization of your LLM interactions is really powerful. And I think it creates like a stickier user experience. I think that, you know, if I had to guess, like, the folks at Claude probably know this, or the folks at Anthropic, the folks at OpenAI probably know this. Certainly, the people at Google know this. But I think there is a question of when to introduce it and what are the right surfaces? So I think this is where, for Notebook LM, I'm excited because we started there. Right? So there's like a little bit of, hey, as people catch on to the importance of like source grounded workflows, source grounded stories, this could be the tool that they're looking for.

• 17:59Speaker 03

  And if we just sprint at this, hopefully, we'll get farther along before, before everybody else who's juggling all of these other use cases.

• 18:07Speaker 02

  You mentioned earlier that, you know, chat is kind of the skeuomorphic interface for, for AI. And that you guys are experimenting with crazier things. Like, what, what might the crazier things look or feel like? Give us a taste.

• 18:19Speaker 04

  You know, I think that's at a high level. I'm super intrigued with these kind of dynamic UIs. I actually think Claude is an example of that, right? You see this artifact come in that wasn't originally there. I think we're thinking a lot about how to, you know, we're trying to do a lot here, right? Reading, writing, and I think there's only so much that you can do before a user gets overwhelmed. And so I think we're really exploring, how do we take advantage of what you're doing at that moment? While also not overwhelming you with all the other possibilities.

• 18:49Speaker 03

  I think for me, I think a lot about leaning more into new modalities, which is what does it mean from an input and an output side? And I do a lot of prototyping on my own and experiment with a lot of my own behaviors. And one of my favorite ones is sort of the idea that I can walk and talk with my LLM, right, or with like an AI sort of ecosystem. And one of my favorite recent examples is I started doing this with a daily journal, where instead of writing my journal, I just go back and forth and it creates the journal log for me. And then it creates a visualization of basically like, hey, you know, this week you had more bad days than good, or you had more good days than bad. Here are the things, right, that made you happy. Here are the things that made you upset.

• 19:33Speaker 03

  And I think there's a lot of richness there in interaction. Where I think about it, it's like, hey, source of grounded AI. Of course, there's like some really practical sort of work use cases there. There's some educational use cases, but the personal ones are also really compelling. And so I'm trying to think about how do we take these learnings and bring it back into Notebook LM? And, you know, probably in something like the mobile app, right? We might see more of that.

• 19:59Speaker 02

  So you now have, you know, you have lightning in the bottle with Notebook LM. Where do you hope to take it from here?

• 20:07Speaker 03

  I think honestly, just keep going. I just want to keep building more cool stuff. We want to deepen the experience for users. We want to make it really useful. I think there is a lot of magic right now, a lot of delight. And I think we want to deliver on the promise of that that initial hit and just show people like, hey, you can, you stick around, that's going to be great.

• 20:28Pat Grady?

  What do you think is the biggest thing missing from the product today?

• 20:32Speaker 03

  Oh, well, I'll say if I could, you know, rewind back in time and build more things as part of this launch, I would definitely build a better share experience. Just the amount of, you know, when I scroll on X and I see all the videos and visualizers that people use instead of like our native one, you know, as a, as a product lead, I'm like, oh, I'm missing out on counting this user here because they're on a different surface now. So I think for me, it's really the sharing and sort of collaboration around the audio overviews that's missing.

• 21:06Speaker 04

  And I think as we started talking about, I think I'm really excited about the addition of a writing experience. I think that we know that people are often doing Q and A and then taking that answer to then create something new. And so I'm just excited to help kind of fulfill that whole user journey.

• 21:23Speaker 03

  How do you make it like, are you prompt engineering to make it kind of like, do you tell it to be like, you know, conversational, funny? Like, what are you doing on the technology?

• 21:32Pat Grady?

  Yeah. How do you design the personalities? I'm really curious about that, too.

• 21:35Speaker 03

  So there's a lot that we do in the background. And I think you hit on some really good aspects of it, especially around, you know, the show is called Deep Dive. There's clearly two hosts. And what I'll say is that there's a lot more editorial liberty that the personas themselves take to generate that show. And I think that's where, you know, even for me, I am always interested to see where they're going to take the show based on the sources that are uploaded.

• 22:07Speaker 02

  Oh, interesting. So you've given each of the sources its own personality, its own how it approaches things, and then you let it create the podcast?

• 22:15Speaker 03

  Yeah. In a nutshell, I think like, that's the, that's the best explanation for what we've got going. And so when we think about the editing experience, right? It's like, oh, what are the controls for something like that? Of course, like, there's like basic stuff, which is maybe I don't want a deep dive. Maybe I want a different show. Maybe I want a different length. Maybe I want shorter. Maybe I want longer. Maybe I just want to specify, you know, specify a topic instead of like the whole thing because today it's like an overview based audio. So I think there's, there's a lot there that we can tweak, but the heart of it is really this editorial liberty around your sources and trying to give you an overview of it.

• 22:52Speaker 02

  And every time I have jokes that you're gonna take our jobs, you say, you say we're not. But I don't know if you're just saying that to be nice, because what you've generated is legitimately so good. And so the real question I have is, when you say that it's not good enough to replace real podcasts, like, why, why do you say that? Because it, to me, it feels good enough to replace a real podcast.

• 23:08Speaker 03

  I think, you know, I think that's like a, a good question, and one that I try to approach really carefully, particularly because, hey, if there's real risk, I wanna, I wanna look at it in the eye and say, okay, well, how do we, how do we address this? But from what I've seen, a lot of what people are making are not the same things that I feel like we would have a real podcast about, right? Like, do I want to listen, do I wanna take an article and make a podcast out of it that replaces, you know, one of my favorite podcasts, Lenny's? I listen to Lenny's all the time. It's like, no, I wanna listen to Lenny, I wanna listen to what he thinks about this particular topic. And then what's funny is, like, people are making audio overviews of things like their resumes, right? Their LinkedIn bio, or startup founders putting in their landing pages and trying to figure out,

• 23:53Speaker 03

  oh, was my messaging clear? Like, that stuff is really cool, because it's like, no one's ever gonna make a podcast of that. I mean, maybe not at this stage, right? But that's where I think, okay, this feels really good. It feels like we've created a space where personalized generation really is about meeting my needs exactly where I'm at, and there isn't an existing thing out there. And that's really special.

• 24:15Speaker 04

  It does almost feel like a different media type. Like, sure, it sounds like a podcast, but I think you give great examples to kind of prove all these random use cases people are using it for. But I think there's also a reason that reaction videos are so popular online. And people aren't just listening to this right now because of us, because they wanna hear from both of you who are in this space. And I think that's also important to remember when thinking about podcasts.

• 24:38Speaker 03

  I will say, like, one interesting thing about the dynamic is even though people are sharing the audio overviews that they're generating, they're very personal. It's like, I made this for me. I didn't make it for you to listen to my resume. It was me, I was delighted by the audio overview of my resume. Or there's this really cool TikTok of where this woman uploads her diary from 2004. It's like, it was interesting to listen to that together, but it was really her reaction to her diary that, you know, she wasn't going to listen to a podcast about that ever. One of my favorite use cases, actually, I don't know if this was in the Discord, but somebody recently took, they said over the weekend, their group chat with their college friends had blown up.

• 25:21Speaker 03

  And so they they didn't read the messages, but they took all of it and they copy pasted it into a doc and they're like, well, Monday morning, I'm gonna listen to what my college friend said on my drive to work. I was like, that's incredible. And I think that's what personalized generation is.

• 25:35Pat Grady?

  So in a world of chat boxes, where did the idea, hey, people want to listen to this, people want to consume this content in podcast form, like, where did that idea come from?

• 25:47Speaker 03

  Yeah, I mean, I think that it goes back a little bit to something Jason was saying, which is, how do we deliver new things in a recognizable format? Or in a way that's easy for people to understand, such that they would be willing to try it. And I think the combination of upload your source, generate a new voice thing, we're like, well, what are, what's the universe of voice things that we can generate? We have this really powerful voice model and we experimented, we were like, we could do a monologue, we could do a dialogue, we could give the user a switch, but it was really the dialogue that was resonating with people because it was like, oh, it's a podcast, right? It's not just like a text to speech, like, reading the output like we typically expect.

• 26:30Speaker 03

  And I think, once we saw how much that delighted people, we knew that was the thing to ship.

• 26:36Speaker 02

  Okay, so you now have this killer feature in the podcast and you have an incredibly general horizontal surface as well. Where do you go from here? Like, do you go deeper into the podcast thing? Or do you go build out?

• 26:47Speaker 04

  When are we getting YouTube videos?

• 26:49Speaker 03

  Yeah, yeah, I think, you know, that's just, that's a cost problem.

• 26:53Speaker 04

  You could drop those in now, as an input, but an output, yeah, I think we gotta, we gotta work on that a little bit.

• 26:58Speaker 03

  Yeah, I think it's exciting because the roadmap is, I don't want to say it's fairly straightforward, I feel like I'm gonna jinx myself and something's gonna happen tomorrow, but we know that we want to deliver on the promise of bringing in all the inputs that matter to you and letting you use the power of AI to create something new. And I think the podcasts are definitely one type of output that we want to go deeper on, especially because we've seen how much people care about them. So that's one part of it, but I think we want to deliver on the rest, like, the more practical things as well. Just because, like, everybody, everybody has a different preference, right? Even, even, I think, this was two days ago, someone was like, hey, can you just, like, output better code? It's like, the podcast is cool, but can you just output better code? And I was like, oh, that's

• 27:42Speaker 03

  a good idea. I mean, it was, it was on the roadmap, but I was like, yeah, for sure. We should just deepen the investment into, like, the outputs themselves.

• 27:49Pat Grady?

  Well, I'm gonna ask you a sensitive question.

• 27:52Speaker 03

  Okay.

• 27:53Pat Grady?

  Not sensitive in terms of like emotionally sensitive.

• 27:55Speaker 03

  Oh, okay then.

• 27:56Pat Grady?

  Yeah. I can ask you that too if you want. I'm here to help, actually. Possibly sensitive question. You guys, it seems like you have executed on this much the way you might see a startup execute on something, like pretty scrappy, lean team, move fast, a lot of user feedback, iterate in real time, you know, release something imperfect to the world and like, you know, kind of test it, you know, test in, you know, in production.

• 28:24Pat Grady?

  Which seems a bit different than what people might stereotypically expect of something coming out of Google. And so I guess the question is, in what ways has being part of Google helped with Notebook LM? And in what ways have you maybe broken the mold a bit with this project?

• 28:43Speaker 03

  I think that's such a good question. I think I'll start from the perspective of what's been great and what's been really special at Google, which is the two top things that I'll say, access to the models before, you know, they're fully ready and just being able to see the capabilities that are being planned, helps me to think about the way we build the product in a different way. Which is, okay, knowing that these capabilities are coming, how can I make this particular journey better? And that's been really, that's been really good. I'd say the second thing that's been really special is just really the people. Just really smart, really talented and really collaborative people that also just want to build cool things.

• 29:27Speaker 03

  And so having the combination of these two things is really, for me as a product builder is like, wow. Right? Like, this is it. This is all I need. And I can just like, all I have to do is execute. I just have to deliver. And if I keep going, like, we'll ship something interesting. I think on maybe the stuff that like, doesn't quite fit the mold, or maybe things that we've done a little bit differently, I'd say that

• 29:50Speaker 03

  coming into labs, I knew the most important thing for us to do would be to ship. And it's easier not to ship than it is to actually do it. Right? Especially, you know, from my experience at Google, I think there are many times that I second guessed myself. I was like, oh, how would it affect this or that? Like, there's so many considerations. But I think, once you change your orientation to know the P zero is to ship, and you have to do it at all costs. And now I'm about to say it on the podcast, and I hope our engineers aren't listening. Also create a lot of fake deadlines. And it's really funny. It's really funny because it works. I'll be like, guys, October 10th, we have to do it. It has to ship. And everyone's like, October 10th, that's in two weeks. It's like, yeah, what do we do?

• 30:35Speaker 03

  And they're like, all right, well, we've got to like, do it now. It's like, oh, yeah, I know. And so we just like, really crank on it. And it's, you know, I'm making light of it, but for the most part, people don't really ask. Like, what's happening on October 10th? And so it works. It worked for us. And it's worked for two years, so hopefully they really don't listen to this.

• 30:52Speaker 04

  Keep going, that's good. But I do also think right now, I do actually think there is a misconception that Google's slow. You know, in my seven years at Google, I've actually been surprised how quickly things move. But you just also have teams that are really big, that affect billions of users every day. I think we're in a sweet spot now where you have all the values of an incumbent, like a big company, like the scale and, you know, the data. But I do think also now, because we're a small team of, you know, about 10 people, we also can move quickly.

• 31:24Speaker 02

  We can't wait to see what you guys continue to build with the product. And hopefully don't put us out of a job too soon, but it really is delightful what you've built so far. Congratulations.

• 31:32Speaker 03

  Thank you. Thank you for having us on. This has been really fun.

• 31:35Speaker 04

  Thank you.