Browserbase raises Series B led by Notable Capital
“We're announcing our series B fundraise, which was led by notable capital Glenn Solomon joining our board.”
Klein: Browserbase has raised $67.5M in total funding
“So all in, it's 67 and a half million, though I kind of wish we'd just raised the extra 500 K, so I didn't need that extra half.”
Browserbase offers Stagehand framework for LLMs to control cloud browsers
“And not only do we provide the browser infrastructure, browsers at scale in the cloud, but we also have this framework called stagehand, and it's the code interface for the browser, which gives developers and LLMs an easy way to programmatically control a brow…”
Klein automated his company's Delaware franchise tax filing using Browserbase
“A use case that I use Browsebase for recently was I had to file my Delaware franchise tax. And if you ever had to do that as a founder, it is a really annoying web form on the Delaware website. Where you go in, you fill in your cap table, and you correct some …”
Klein: DMVs and legacy government portals will not build AI APIs
“If you're going to, you know, try and renew your driver's license, the DMV is not going to have an MCP server, or some sort of API, or some sort of first-party AI integration. It's going to be this, you know, website that people have to interact with.”
Twilio founder Jeff Lawson is a Browserbase angel investor and advisor
“I'm very lucky to have Jeff Lawson, the CEO and founder of Twilio, as an angel investor, and he's been instrumental in the growth of this company and a big advisor to me.”
Vercel's Guillermo Rauch and Stripe's Patrick Collison backed Browserbase
“Guillermo from Vercel has also been a very inspirational person for us, and we're lucky to have them both as a customer and an investor. Patrick Callison from Stripe, another angel investor that we're really happy to have on board.”
Klein: Browserbase has crossed 1,000 customers
“We actually just crossed a thousand.”
Klein: Browserbase flew an airplane banner over San Francisco for Series A
“For the series A, we flew a plane over San Francisco and had a little banner.”
Klein: Sponsoring technical creators is high-ROI marketing that builds champions
“I think it's actually such a great use of, you know, marketing spend because then they become advocates. They end up giving you great feedback and hopefully you're building champions with the creators you work with.”
Klein: 15% of Browserbase signups come from AI model recommendations
“Yeah, I think 15% of our signups came from, well, AI told me about BrowserBase.”
Klein: Using an emoji as a brand logo puts it on keyboards
“You need to have an emoji that's recognizable with your brand. That way your logo is installed on everyone's keyboard.”
Klein: AI must navigate legacy web infrastructure rather than rebuilding it
“And I think that there's so much of this existing internet, there's so much of this existing infrastructure that people have to depend on and use every single day that we're probably not gonna rewrite all of it. We're not going to rebuild a new internet. We're…”
Klein: Browserbase is an infrastructure primitive, not an AI agent company
“So no, if you're watching this, we are not, we're not even really an AI company. We're an infrastructure company. We help companies use model, but people bring their own models on BrowserBase. Their models control our browsers, right? So we're more of a primit…”
Browserbase spent zero dollars on models during its AI Grant cohort
“Yes, we are the only AI company In AI grant that spent like zero dollars on models while we were in a grant.”
Founders of Okta, Clerk, Stytch, and WorkOS invested in Browserbase
“You know, one of our investors, Okta the founders of clerk, the founders of stitch, the founders of workOS, all investors in browser base.”
Browserbase launches Director.ai, a natural-language agent builder for browser automation
“So we're actually launching a new product today. Part of series B. First, first heard on sorcery. Breaking news. You know, and it's called director, director.ai.”
Browserbase's customer support team consists exclusively of software engineers
“For browser base, we've really invested a lot into our customer engineering team and they're not traditional like CS people that you might find on the street. Like they're actually the most educated people at browser base. Like one went to Columbia, they went …”
Klein: Browserbase Works In-Person Five Days a Week in San Francisco
“We have an office in San Francisco, the team is in person five days a week.”
Klein: Browserbase Employs Zero Product Managers by Design
“We also have no PMs, and that's by design. Like, the engineers drive the product requirements from the customer needs”
Klein: Browserbase plans to double headcount to 50 this year
“We're gonna double the team, so we're getting to 50 this year.”
Klein: Solo founders eliminate internal co-founder alignment friction
“As a solo founder, you remove this alignment step within co-founders where you have, we have several co-founders. Often the co-founders have to get aligned and then you get aligned to the rest of the company. So when you're a solo founder, It's just you and th…”
Klein: Starting tech businesses today is 'easy mode' compared to the 90s
“We have it on easy mode these days starting businesses. Like, I can go raise capital. I can go, you know, hire people. I can use the internet. I think it's, was so much harder to build great businesses in, like, the eighties and nineties”
Klein: Google Gemini will be the best AI model this month
“I think it's Gemini. I think the DeepMind lab has been doing a really fantastic job. I think it's really tough because I always see like these stats of like DeepMind engineers leaving to go to places, but the team really did a great job. You know, we have earl…”
Klein: Browserbase has early access to Gemini computer-use model
“You know, we have early access to the Gemini computer use model at BrowserBase, and it's very, very good.”
Klein: Browserbase grew to 20 people and Series A in year one
“Like, BrowserBase is actually pretty close to our first birthday, so we are one years old, and going from, you know, Starting a company as a solo founder to, you know, having a team of 20 people, you know, a series A, but also being able to support hundreds of…”
Klein: Browserbase spent zero dollars on AI in its AI Grant batch
“I'm in AI grant, you know, browsers was an AI grant, but we were the only company in that AI grant batch that used zero dollars on AI spend.”
Klein: Browserbase's PE-backed rival hasn't updated its dashboard in five years
“Our biggest competitor actually is partly owned by private equity, and they just jacked up their prices quite a bit, and the dashboard hasn't changed in five years”
Klein: Headless browsers are a core primitive for future LLM operating systems
“Browsers are a core primitive of infrastructure for the LLMOS that's going to exist in the future”
Klein: Browserbase briefly became the largest regional Fargate customer before moving lower-level
“We used to be a giant Fargate customer. Actually, the first version of BrowserBase was ECS and Fargate. And I unfortunately it's a great product. I think we were actually the largest Fargate customer in our region for a little while.”
Klein: Authentication, not CAPTCHAs, will be the biggest barrier for AI agents
“I actually think that off is the biggest thing that will prevent agents from accessing stuff, not captures.”
Klein: Authentication providers will offer dedicated login features for AI agents
“I think there'll be agent off in the future. I don't know if it's going to happen from an individual company, but actually authentication providers that have a You know, hidden login as agent feature, which will then you put in your email. You'll get a push no…”
Klein: Founders from Stytch, Clerk, and Okta Ventures invested in Browserbase
“And, you know, three from Stitch is an investor, Colin from Clark. Okta Ventures, all investors in BrowserBase because like, I hope they solve this because it'll make BrowserBase's mission more possible.”
Klein: AI apps requiring browser interactions need dedicated backend cloud infrastructure
“If you're building applications that rely on a browser and it's more part of a greater like AI app experience, you probably need something that's more like infrastructure, not a consumer app.”
Klein: Browser state branching and forking is on Browserbase's product roadmap
“And hopefully find the right answer and then say, okay, this was actually the right one and memorize that and go there in the future on the roadmap for sure.”
Klein: Stagehand is built for AI agent reliability, not dedicated web scraping
“If you're building a scraping company, StageChan's not your thing. You probably want something that's gonna, like, get HTML content, you know, convert that to Markdown, query it. That's not what StageChan does. StageChan's more, more about reliability.”
Klein: DOM-anchored agent actions are more reliable than vision-based coordinate clicking
“I think that using mouse click or mouse coordinates, I've seen that proved to be less reliable than I would like. And I just wonder if that's the right form factor. What we've done with our framework is Anchor it to the DOM itself. Anchor it to the actual item…”
Klein: Web scraping workflows should use a tiered waterfall architecture
“If you're building web scraping workflows, what you should do is have a waterfall. You should have the first request is a curl to the website. See if you can get it without even using a browser. And then the second request may be like a scraping specific API. …”
Klein: Complex developer primitives like web browsers require bespoke, dedicated infrastructure
“For tools and primitives with sufficient levels of complexity, you need to have a solution that's really bespoke to that primitive, you know, and I am sufficiently convinced that the browser is complex enough to deserve a primitive.”
Klein: Browserbase delivers 90% of computer-use functionality at 10% of OS cost
“BrowserBase can run browsers for way cheaper than you can if you're running a full-fledged OS with a GUI, you know, operating system. And I think that's just an advantage of the browser. It is like, browsers are like little OSs, and you can run them very effic…”
Klein: The future of software is software operating other software autonomously
“The future of software is software using software.”
Klein: Browserbase will be a billion-dollar company within five years
“I can predict that Browserbase will be a billion dollar company one day. So let's check back in five years.”
Klein: Having co-founders slows startup execution by adding an extra alignment layer
“If you want to move extremely fast as a company, one of the hard parts about having co-founders is that there's like, you have to do the co-founder alignment and then the company alignment. And then there's people on the team that probably tell things to one c…”
Klein: Browserbase operates fully in-person Monday to Friday from 10 to 6
“Culturally, like we're fully in-person. Maybe that's one crazy take that we do, but we're also like not too in-person. Like our first meeting's at 10 a.m. People leave around five or six. We work Monday to Friday in-person, and those like, that's the expectati…”
Klein: Former YC CTOs and ex-founders make the best early startup hires
“Culturally, we're a lot of like former YCCTOs and like ex-founders or future founders. And I've just found that those people tend to be just really great early hires for a company. They get it.”
Klein: Polarizing binary decisions make maintaining company culture easier to assimilate
“When you make people make a polarizing decision of like, I will come to an office five days a week, people then end up making more decisions that are aligned with the culture. So it's almost like if you can make your culture binary or you're in or out, It beco…”