No Priors Ep. 92 | With StackBlitz CEO and Co-Founder Eric Simons

No Priors Ep. 92 | With StackBlitz CEO and Co-Founder Eric Simons

No PriorsDec 6, 202438m

Sarah Guo (host), Eric Simons (guest)

What Bolt.new is and how it differs from generic codegen toolsWebContainer technology and running full dev environments in the browserStrategic open-sourcing of prompts, code, and the role of communityNon-technical users and the emergence of “software composers”Bolt as a real-world benchmark for new codegen modelsReal startup and product use cases built entirely with BoltWhy this generation of AI codegen surpasses traditional no-code platforms

In this episode of No Priors, featuring Sarah Guo and Eric Simons, No Priors Ep. 92 | With StackBlitz CEO and Co-Founder Eric Simons explores bolt.new turns ideas into full-stack apps, redefining software creation StackBlitz CEO Eric Simons discusses Bolt.new, an AI-powered browser-based tool that generates full-stack, production-grade web applications from natural language prompts. Built on StackBlitz’s WebContainer technology, Bolt runs dev environments entirely in the browser, avoiding backend setup, latency, and cloud costs. Simons explains why they open-sourced Bolt’s prompts and code, how community usage drives both product learning and model evaluation, and why this moment is fundamentally different from earlier no-code attempts. He also highlights real users launching profitable startups with massive cost and time savings, and predicts a rapid shift toward “software composers” directing powerful codegen systems.

Bolt.new turns ideas into full-stack apps, redefining software creation

StackBlitz CEO Eric Simons discusses Bolt.new, an AI-powered browser-based tool that generates full-stack, production-grade web applications from natural language prompts. Built on StackBlitz’s WebContainer technology, Bolt runs dev environments entirely in the browser, avoiding backend setup, latency, and cloud costs. Simons explains why they open-sourced Bolt’s prompts and code, how community usage drives both product learning and model evaluation, and why this moment is fundamentally different from earlier no-code attempts. He also highlights real users launching profitable startups with massive cost and time savings, and predicts a rapid shift toward “software composers” directing powerful codegen systems.

Key Takeaways

AI codegen has crossed a tipping point for real production apps.

Simons argues models like Claude 3. ...

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Running dev environments in the browser unlocks speed and scalability.

StackBlitz’s WebContainer OS executes full toolchains (Next. ...

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Open-sourcing prompts and glue code builds durable advantage via ecosystem.

Bolt’s team believes their moat is end-to-end product quality and growth, not secret prompts, so they open-sourced them to spur contributions, credibility, and widespread adoption rather than behaving like a fragile GPT-wrapper.

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Community is now essential to teaching people how to use AI tools.

Because AI outputs are non-deterministic and prompt quality matters, StackBlitz leans on power users to share workflows, tutorials, and best practices—reducing churn and making users often more expert than the creators themselves.

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Non-technical professionals can now realistically build and launch products.

Entrepreneurs and PMs who understand product requirements but not code are using Bolt to ship full apps—often replacing $5K–$30K dev quotes with $50–$200 subscriptions and compressing timelines from months to weeks.

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Bolt is emerging as a de facto benchmark for new codegen models.

Researchers and practitioners plug open-source models into Bolt Local to see if they can power realistic, complex app-building workflows—creating a practical “can it run Bolt? ...

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The future developer role shifts from coder to high-level software composer.

Simons predicts developers will increasingly direct AI agents with higher-level instructions, focusing on system design and hard problems while AI handles boilerplate, UI generation, and routine coding tasks.

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Notable Quotes

Bolt is kind of similar to ChatGPT or Claude, except you use it to build full-stack web applications.

Eric Simons

We’re not gonna win because of our system prompts. We’re gonna win by growing extremely quickly and building the best end-to-end product experience.

Eric Simons

It turns out, managing an AI is extremely similar to managing actual software developers.

Eric Simons

This is the most incredible arbitrage opportunity in web development ever.

Eric Simons (quoting a user tweet)

AI code gen models have gone over the tipping point of being good enough to really write real applications that are production grade.

Eric Simons

Questions Answered in This Episode

How will traditional web development agencies and freelancers adapt their business models as tools like Bolt compress cost and delivery times so dramatically?

StackBlitz CEO Eric Simons discusses Bolt. ...

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What safeguards or best practices are needed to ensure security and maintainability of AI-generated production code at scale?

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How might the definition of a “software developer” change as more non-technical users become effective software composers through tools like Bolt?

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Could the heavy optimization of models for code generation create blind spots or trade-offs in other capabilities, and how should labs balance that?

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What new types of products or business models become possible when the marginal cost of building a full-stack app approaches zero?

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Transcript Preview

Sarah Guo

(music plays) Hi, listeners. Welcome back to No Priors. Today, we're hanging out with Eric Simons, the co-founder of StackBlitz and the makers of Bolt.new, a new AI tool that enables everyone from developers to designers to non-technical folks to build full-stack, real applications entirely in their browser. Eric has spent the last decade and a half thinking about how to make development more accessible. And since its launch, Bolt has taken off like lightning. Is it over for site builders? We'll talk about AI code generation, creative community, and if everyone really wants to build websites. Eric, good to see you.

Eric Simons

Good to see you too, Sarah.

Sarah Guo

You have had a wild, uh, two months since you guys launched Bolt.new. Uh, can you explain what it is? Like, zero to 20 million of ARR? Uh, I have, I don't think, ever seen that sort of crazy growth.

Eric Simons

Yeah. I- I- I haven't either. Y- y- it's been kind of surreal. (laughs) It's kind of far beyond any of our expectations here.

Sarah Guo

So, for anybody who, uh, hasn't seen it yet, what is Bolt?

Eric Simons

Bolt is... It's kind of similar to, like, ChatGPT or Claude, except, uh, you use Bolt to build full-stack web applications. So you can come and just prompt if you want a landing page, a blog, or even like a f-... You know, any type of full-stack web app where you have authentication and you can log in. And, you know, you can use it effectively. Instead of going to, like, a web development agency or shop, you can come here, put in your idea, hit enter, and- and get a real production website for you. If you look at the world, there's, you know, 25 million developers, I think, globally. And, you know, to date, you know, we... Last week we had, you know, almost 200,000, uh, software composers, you know, we like to call them, that use Bolt to build web applications. And we think, we think that that number should be (laughs) 100 million. And, you know, and we- we- we're on this growth clip, um, that seems like, uh, you know, may- maybe we'll get there, um, sooner or later. Bolt is really enabling folks to, to build real software, not just kind of drag and drops or, uh, static sites, uh, you know, the- the previous era of how the web was made.

Sarah Guo

There's a lot of code generation tools out there. You can do this, you know, directly, um, in the core model products as well. What do you think people are finding special about Bolt?

Eric Simons

Yeah, totally. Yeah, what's special about Bolt, and it kind of comes to the origins of our company, but, you know, in short, we've written an operating system in WebAssembly that can, like, run in your browser. And that's really important, because if you want to run dev environments, uh, you need to be able to install arbitrary packages and run different tool chains, right, whether it's Next.js or Vite or anything else. It's very complicated, uh, and expensive to typically do this if you're going to use servers, so it's very valuable to, like, do it in the browser because it's extremely fast. There's no latency. You're not paying by the minute, you know, for some cloud. What we've done, um, is kind of marry these frontier models with this technology we've been making, um... And, uh, when you kind of look at the other stuff in the market, there, there's... Uh, you know, like, a Cloud Artifacts is, you know, probably one of the first things that, uh, that hit the market that did a really good job of this where you could say, "Hey, build me a UI," and it will, like, do it. The problem comes when you actually want to build stuff that's more meaningful. Like, it's very good if you're saying, "Hey, like, yeah, I use Zap-, you know, Claude, uh, you know, every week for just kind of generating graphs based on numbers or whatever." Very good for that sort of use case, but if you want to say, "Hey, create a landing page where people can log in and, like, do some type of functionality," you can't go npm install, you know, Firebase or Supabase or whatever have you, and plug all that up and actually deploy it. So that's what, uh, Bolt specifically is, you know, uniquely capable of doing without any other setup. Um, it's just all kind of baked in.

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