CEOInterviews.AI
Start App
Erik Torenberg
General Partner; Host, The a16z Show, Andreessen Horowitz

Alex Atallah & Amjad Masad on Al's Multi-Model Future

📅 Oct 03, 2026 a16z 48 MIN 16763 VIEWS 57 SEGMENTS · 3 SPEAKERS
A16z’s Erik Torenberg sits down with OpenRouter’s Alex Atallah and Replit founder and CEO Amjad Masad to discuss why the future of AI may look less like one all-purpose model and more like an ecosystem of specialized models working together. Alex explains why OpenRouter is betting on “neurodiversity”: different models trained in different ways, routed and combined based on the job at hand. Amjad makes a similar case from inside the enterprise, where companies increasingly need to own their AI capabilities rather than depend entirely on a single model provider. They explore what happens when...

What Erik Torenberg said

Written from the verified transcript and checked against it. Every figure links to the moment it was said.

Erik Torenberg hosted Alex Atallah of OpenRouter and Amjad Masad of Replit, discussing OpenRouter's acquisition by Stripe, the future of AI models, and agent specialization. Atallah explained that Stripe approached OpenRouter in July, and the acquisition progressed quickly due to aligned missions of fostering new companies and avoiding vendor lock-in. He emphasized the importance of neurodiversity, using multiple models to avoid dependence on a single provider, and the role of marketplaces in driving down costs. Masad discussed Replit's shift toward on-premise deployment for enterprise data sovereignty and the trend of companies building similar agent loops. The conversation covered the risks of general agents, the need for specialized models, and the potential of decision models like Jev for alignment and policy enforcement. Both agreed that the future will see more diversity in AI models rather than a single AGI, with Masad predicting a cycle similar to the shift from dynamic languages to Rust, where specialized models become more common.

Key takeaways

  1. OpenRouter was acquired by Stripe after being approached in July, with the deal progressing quickly due to aligned missions.
  2. Masad predicts a cycle where AGI-like models are replaced by specialized models, similar to the shift from dynamic languages to Rust.
  3. Replit has spent the past year making its platform deployable on-premise for enterprise data sovereignty.
  4. Atallah suggests decision models like Jev could be used for alignment and policy enforcement in agent-to-agent communication.

Numbers and commitments

FigureWhat it refers toTypeAt
$30 trillion SpaceX S-1 valuation mentioned by Torenberg other 0:00
2x lower cost Cost reduction from OpenRouter's fusion model metric 45:12
40 to 50% of the cost Cost of frontier-level quality using fusion models at Replit metric 46:32

Chapters

  1. 0:00OpenRouter acquisition by Stripe
  2. 5:33OpenRouter's value proposition
  3. 9:08Enterprise adoption of open models
  4. 16:36Replit's on-premise shift
  5. 19:53General vs. specialized agents
  6. 26:32Agent-to-agent communication
  7. 28:36Alignment and decision models
  8. 31:13Models training replacements
  9. 40:01Specialized models and cost efficiency
  10. 43:25Future of AI diversity

Questions asked in this interview

9
  1. 7:15Otherwise, like you know, why lower my prices as a provider?
  2. 12:24It's like, what is the world GDP?
  3. 29:38Like what would a bad actor do?
  4. 33:01Like would that specific use case involve unstructured text generation or very like structured decision models?
  5. 34:13But if we can figure that problem out, then a smaller model, like will it be harder to align?
  6. 35:23And so you add pressure almost on the chain of thought and that kind of creates, and I think at some point for you to do proper alignment evals, you need to run it for like months, right?
  7. 38:42Would they be willing to pay 10x to get that much?
  8. 40:01We're like, oh my god, remember the days when computers did exactly what we told them to do?
  9. 45:12The thinking is that like if all these model labs are training on different sources of data, like why not pull from all of them?
Erik Torenberg 0:00 ↗
You saw the SpaceX S-1. It's like, oh, $30 trillion. It's like, what is the world GDP? 100 trillion.
Alex Atallah 0:06 ↗
Both Stripe and OpenRouter really want lots of new companies in the world. We don't want everyone to be a part of one giant company.
When the models get more intelligent, the risk actually will continue to get higher. And yet, no one new is taking responsibility.
Erik Torenberg 0:21 ↗
We're going to slowly realize how good we've had it with like deterministic code. Remember the days when computers did exactly what we told them to do.
Are we going to prevent the models from deceiving users during training runs predictably? Will like a model that's big enough and powerful enough suddenly stop deception and stop sandbagging?
Welcome to the a16z podcast. We're here with Amjad of Replit and Alex of OpenRouter. And this is the first podcast that Alex has done since the acquisition. So, we're really excited to have both of you.
Alex Atallah 0:57 ↗
Mhm. Thank you. Excited to be here.
Erik Torenberg 0:59 ↗
Alex, let's start with that actually. If you can briefly share, obviously, you know, massive acquisition. Amjad is an investor. We're also of course an investor, the biggest shareholder, but yeah, who's counting? Alex, why don't you give us a little bit of the backstory, like how does an acquisition like that even happen? Like do you get a DM from Patrick one day? What can you share?
Hey, how much for an OpenRouter?
Alex Atallah 1:32 ↗
I had talked to Will Gabrick, the Stripe president, a long time ago, a couple years ago when we were doing our Series A, and we just stayed in touch. We had like a lot of Stripe work streams going on with various teams at Stripe. So there were always sort of like things that we were doing with Stripe. We presented at Stripe Sessions, and so it always kind of felt close. And then yeah, just in July I believe, they reached out, wanted to chat, met both of them in person, and it kind of just progressed from there fairly quickly. They're very efficient and you know, they were very founder friendly about the experience. I was really impressed with the whole thing.
Erik Torenberg 2:34 ↗
Did you want to sell? Like, did it even cross your mind before they reached out?
Alex Atallah 2:41 ↗
No, we were not thinking about that at all. I did really respect the company, do really respect it today, and you know, of possible acquisition options for us, it was I think my top choice. And so it was like an interesting idea. And you know, as we kind of fleshed out the reasons why it would make sense for both companies, it got more and more interesting. It was really clear how aligned they were with us kind of having autonomy over the brand and roadmap and product and keeping OpenRouter doing what it's already doing, just much faster with a much more serious go-to-market plan, and then you know, some better together stories between the two products and the two companies.
And then culturally there were just, I think, very, in terms of mission and values and building like a neutral trusted platform that businesses can depend on and scale on top of, that's also really developer friendly with the best possible developer experience to encourage new companies to emerge. You know, that alignment was there, and there was a bigger picture kind of alignment too, where like you know, both Stripe and OpenRouter really want lots of new companies in the world. You know, we don't want everyone to be a part of one giant company. We want to create really good incentives and really sort of easy streamlined workflows for people to start new companies and grow them successfully, and you know, make both lifestyle and venture-backed businesses on top of really good reliable and price-efficient infrastructure and a marketplace that works. And you know, I really want that future, and Stripe demonstrated that they've been wanting it and building towards it for like many many years. And in many ways, like payments and inference are going to blend together for companies of the future.
Erik Torenberg 5:08 ↗
I'm curious. I understand why Stripe's incentive is to have you know, much more vibrant startup ecosystem. I understand the kind of moral argument and why you would want that. But why is that good for OpenRouter? Like, is your model for OpenRouter that it's like a network effects business? Is it like a network?
Alex Atallah 5:33 ↗
Well, for us, I think there's like a couple different problems OpenRouter solves. One is, you know, allowing you to build a company that uses AI or like augments intelligence with unique data and other services without model lock-in, without vendor lock-in, allowing you to kind of like be on the Pareto frontier continuously as the ecosystem grows. And to do that, it's a lot of work because there's all kinds of little lock-in that appears. We also, you know, we want companies to feel like the best way that they can add more than just prompts on top of a single model. There's like a lot more to building like unique intelligence, and I think a big component of that is neurodiversity. You really need the power of multiple models that are trained in different ways, including some of your own, to do more than ChatGPT or Claude would on the task.
Erik Torenberg 6:57 ↗
If like someone who is thinking about buying from you as a potential customer is wondering, well, what if I just use the model directly? Like, how do you really show that you are significantly better and able to build a business that matters?
Alex Atallah 7:15 ↗
And I think a lot of it will involve neurodiversity and blending like powers and good data from multiple models. Another component is like helping people get really good cost efficiency. Like there are a lot of businesses that just cannot emerge until they become cost effective, and like creating an environment where we can help drive down costs by building an efficient market is like crucial to making that happen. Otherwise, like you know, why lower my prices as a provider? We have a captive market. And like you know, I think that's like a key point of marketplaces that was just totally missing from AI before we showed up. There was just one player, OpenAI. It could have been like a very strange world. I'm not saying that we did all the work. Of course not. But like helping people like choose new models and explore new models and learn like what makes you know, a closed source or open weight model like actually good at your task involves like seeing what the whole ecosystem is doing and learning automatically. Like LLMs are not things where you can just enumerate all the features on a web page. It's impossible. You have to see how they're being used to know what they're good at.
Erik Torenberg 8:53 ↗
So, you started the company three years ago. I'm curious, what has surprised you the most about sort of the evolution of open and closed source models to the present, as it relates to model performance or just people's perspective on the variety of models they have available to them?
Alex Atallah 9:08 ↗
People have been more open-minded than I thought they would be towards open weight models. Like typically there's a lot of brand, especially in enterprise, typically there's a lot of like brand trust where like enterprises in general are like, oh, I don't really know how to tell the difference between these things, so I'm just going to like buy the one that all the other credible enterprises are buying. And there's a lot of like enterprise lock-in with like a mentality like that. And that just didn't happen that much. It did happen like a bit, but we saw a lot of enterprises want to explore new models. It was very much good for a marketplace. Enterprises wanted to diversify outside of just the proprietary frontier model labs, both for like cost reasons and for differentiation reasons. They wanted to like own their intelligence so they could, you know, I think like one, keep their talent, like have like an internal AI practice. Like AI is just like a huge strategy topic. It's not like you go to your board and you're like, oh yeah, you know, we fixed the AI problem, quarter complete. Like your board is like asking you every month like what's next for the internal AI team. And like every single enterprise now has just this internal AI team that they're developing where they need a strategy behind it. It's not just a like, you know, we check the feature off, we set up the database and we're done. And so I think that dynamic has resulted in just like a desire to explore and diversify, and a desire to kind of like figure out how to reduce costs and figure out how to do benchmarks for the first time in the company's life. I have been like surprised there hasn't been more benchmarking, like more companies creating more benchmarks. It's starting to happen, and I think like eventually we'll see a lot more of them to demonstrate like, oh yeah, like this thing is better than using you know, Claude direct. But like I think that's going to be like a bigger focus for this internal AI group at every company, evals. And I think like Jud's been doing that a lot at Replit for example, like you guys have done a lot of cost per task research. You guys have, and you know, you've made like a doom loop rescue. You've kind of been like experimenting with new ways of using agents like doom loop rescue and like helping bring those to developers. So like more of that kind of research I think is going to pop up internally everywhere, for all of those reasons.
Amjad Masad 12:24 ↗
Yeah, I think Satya, CEO of Microsoft, has been very, very, you know, prescient on this and also very articulate on why companies need to own their intelligence ultimately. In the same way that you know, we had dot-com companies and then every company became an internet company, like every company employs people that know how to like build websites and be on the internet. Similarly with software, every company has software engineers. Every company needs some AI practice, AI capability, and that will compound over time the knowledge, the intelligence inside the company, the use case model fits, like which models actually work for them, how do they save money. They need sort of that independence. The other thing that I think Alex Karp of Palantir has been talking about is that there's like a risk that when you work closely with the foundation model companies is that they're going to move into your business. And we've seen that, you know, with Figma, we've seen that with like now Harvey and OpenAI. And you know, it's really hard to partner with them because you know, they see the world as their potential market. Like I mean, when they talk to investors, they're like, you know, you saw the SpaceX S-1, it's like, oh, $30 trillion. It's like, what is the world GDP? 100 trillion. And so there is a sense in which these companies are different than other generations of companies. It's harder to partner with them because their ambition is such that they want to subsume a big part of the economy. And increasingly, like what we're thinking about at Replit is kind of in the similar vein to what Alex has sort of innovated, is Replit is becoming more of an independence layer inside enterprises where we create a layer of interaction between you and the models and we get you the best token at the cheapest price. But also we create an abstraction layer on top of the cloud as well because you know, you should be able to deploy to AWS and Azure and you should be able to use Databricks and Snowflake and so on. And so increasingly I think there is not just with AI, with all of technology, there needs to be more platforms that help companies gain independence.
Erik Torenberg 15:04 ↗
It seems like yeah, what OpenRouter did for their segment, you're doing for other areas of the business.
Amjad Masad 15:10 ↗
Yeah, this kind of reminds me of this tweet I saw the other day when somebody was like basically all companies are building the same thing now. Everybody's building an agent loop with like notifications and context, like third-party connectors and context management and memory and sandboxes, you know, agentic web search, computer use, and an always-on agent on top of it and notifications. And it's like this product is showing up everywhere.
Alex Atallah 15:51 ↗
Um, in a way, yeah, it is like showing up everywhere, but it also kind of feels to me like these are just the new table stakes primitives. It's kind of like a 2005 version of that tweet would be, oh, everybody's building the same thing. It's like a database, a users table, a sign-in page, a signup page, a profile page, a logout page. Like everything's the same. It's like there's like a lot of differentiation really. It's just there's table stakes needs for AI just like there are table stakes needs for the web.
Amjad Masad 16:36 ↗
Yeah. And I think as well like inside the enterprise, making these products actually do real work is still an unsolved problem. Like you can use Muse in your personal life and connect it to your credit card and bank accounts, and no one's connecting Muse to their enterprise data or even Grokbot and things like that. I think there's an even more emphasis on data sovereignty and security. So we spent the past year almost working on making Replit deployable on your own cloud, basically on-prem, like bring your own cloud. Like two years ago I would have thought I would never do this because you know, it's just like yeah, the cloud is the future, like software as a service, all of that. But now actually we've sort of reverted a little bit back to a world where companies are a little bit more protective because there's so many ways in which data can leak. Like all these agents that people are using. I mean, there's all these screenshots on Twitter. I don't know how true, where Instinct is like or Muse is like mixing people's data, starts to call you by a different name or something like that. And so yes, the kind of consumer stuff is kind of obvious, but on the enterprise, there's still a tremendous amount of work for the entire industry to do in order to actually get these things to be useful and productive at work.
Erik Torenberg 18:10 ↗
Are you doing any, like do you have like a custom personal agent other than Muse or Instinct that you use for like work stuff that you've been building?
Amjad Masad 18:22 ↗
Yeah, I mean I built something on Replit like a long time ago. I started as like a sort of a CRM agent initially. That was the main problem that I had, but slowly like we added features to it and it's sort of like doing more and more things. But what's really interesting is that the more I connected Replit to all my stuff, it sort of like started answering all the things for me. And so increasingly like the platform itself is like subsuming these sort of domain specific agents that I built. I do think that there is some, in some ways you want something that is sometimes like focused on one particular thing and you don't want it to be able to do everything. On the other hand, once you have your entire company's context in one place, it's really cool to join across totally different domains. Like when I ask it a question, it can like look at my sort of personal chat history, join it across the GitHub repo, across Salesforce. And so it says like it will link like random things. It's like, oh, you met this guy like a year ago at a conference. I see it on your calendar, and by the way, someone else from their team is in discussion with your sales team. And it creates all these different synergies. And when I go into a meeting, I like, you know, I've connected a lot of different threads and I make much more progress on a deal or something like that. So this is where it's sort of trending now.
Alex Atallah 19:53 ↗
Well, I think I'm like a little bit, I'll take the counter on that. I think the worst part about doing cross-domain joins with your personal agent is that the more work you give it to do, the more understanding of what's going on you're sacrificing. And yet no one new is taking responsibility for that sacrificed understanding. Like agents don't have any responsibility. You can't like, if there's a fixed level of cortisol that the whole company can tolerate between everybody, and you know, you like, I want to be like less stressed about some area if I'm going to be like sacrificing my understanding of it, someone else needs to take the cortisol, but the agent doesn't take on any of that responsibility. And like a universal agent that's doing all things, you know, I can't adjust how much I'm sacrificing in all the different things. It points me a little bit towards, you know, maybe like down the road like the sub-agents that people use will be like very vertically focused. Maybe we have like a chief of staff type agent that, you know, coordinates between them. But I feel like you do need like vertically focused agents where you're like, okay, like this agent is more responsible psychologically for these things. And like I want like quality checks that make sure it's doing those things correctly. And it doesn't need to focus on anything else. It just has one focus area. I wonder if that's going to like help people like at least get like a weird loose sense of responsibility on top of agents.
Erik Torenberg 21:57 ↗
Fascinating. So you're saying general agents create like a tragedy of the commons of sorts?
Alex Atallah 22:04 ↗
Kind of like I have a general agent that every day looks for things that need me and tries to figure out what to do. And it's just like impossible to improve this agent. Like every time I try to make an improvement, I end up like ignoring its output about a week later. It just feels like it doesn't really care about any of the specific things it's diving into. And like kind of imagine having a chief of staff where they're very good at, you know, like drafting all of your replies across the whole organization. And then compare that to something where you have like 10 chiefs of staff, each as competent as that one chief of staff, but they're all responsible for like individual sectors of what makes up your life. Like the latter I feel like gives you a way of tuning how much understanding you sacrifice compared to the gain you get from like basically I can like lean in more to the areas where the agent is failing for some areas and then have agents with very good competency like take over my understanding of other parts of my life.
Amjad Masad 23:36 ↗
Yeah. Interesting. It's sort of like almost rediscovering, you know, specialization, right? What's his name? The like the famous economist, Adam, like...
Alex Atallah 23:52 ↗
Adam Smith.

26 more exchanges in this transcript

Sign in free to read the rest of this interview. No card required.

Sign in to read the full transcript

Cite this transcript

APA, MLA, BibTeX
APA

Torenberg, E. (2026, October 3). Alex Atallah & Amjad Masad on Al's Multi-Model Future [Interview transcript]. a16z. CEOInterviews.AI. https://ceointerviews.ai/interview/3001899/

MLA

Erik Torenberg. "Alex Atallah & Amjad Masad on Al's Multi-Model Future." a16z, 3 Oct. 2026. Transcript, CEOInterviews.AI, https://ceointerviews.ai/interview/3001899/.

BibTeX
@misc{torenberg2026_3001899,
  author       = {Erik Torenberg},
  title        = {Alex Atallah \& Amjad Masad on Al's Multi-Model Future},
  howpublished = {Interview transcript, a16z. CEOInterviews.AI},
  year         = {2026},
  month        = {oct},
  url          = {https://ceointerviews.ai/interview/3001899/},
  note         = {Speaker-attributed transcript with timestamps}
}