The Ledger
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Franceschi: Bolting AI Onto Legacy Workflows Fails Compared to Ground-Up Redesign
“And I think that the biggest discontinuities in a positive way that we've had were when we said, hey, let's keep this old way here, keep putting it in a corner. And like, how would we design it if we started the company today from scratch? And then just doing …”
Brex Data: SF and NY Drive Token Consumption and Faster Growth
“When you look into the sort of ten-mile radius we're in now and maybe you include New York tons of token consumption and you could probably argue, and we see in the data also faster revenue growth.”
Franceschi: Failing to Minimize Product Surface Area Signals the Wrong Problem
“I always tell people, like, I think if you don't, if you can't minimize your surface area and solve the problem with a very clear set of boundaries, you haven't found the right problem to solve.”
Brex Uses AI Agents to Automatically Fix Other Agents' Bugs
“Whenever someone has a conversation with the agent that is the flags an issue or a bug or something that feels like the conversation didn't go as smoothly, that creates a bug. That bug triggers an agent that's going to go and modify the code base and the promp…”
Franceschi: Companies Must Separate Code, Customer, and Roadmap AI Agents
“You should separate the agent that, and the systems that are actually emitting code from the system that is talking to customers and the system that is reasoning about the conversations with customers and translating into product roadmap. Basically three separ…”
Franceschi: Synthetic Customer Models Only Work When Deep Knowledge Already Exists
“We did a lot of exploration with like synthetic customers and building customer world models and things like that. And those are really valuable once you know a lot about the customer, but when you don't know enough yet, I think there's this like very basic th…”
Garry Tan: Brex is YC's Deepest AI Enterprise Adopter
“Brex has gone deeper on AI than almost any enterprise company we know.”
Brex was originally admitted to Y Combinator pitching a VR headset
“I funded them to do a VR headset thing, and I was a credit card company. And they, I was, I interviewed them, I was their group partner, I was their main contact through the whole thing.”
Brex Open-Sourced Crab Trap to Secure Autonomous AI Agents
“We build this thing called Crab Trap, which we open sourced probably about two months ago, which is actually the way we use to secure agents at Braxton production.”
Franceschi: Zero-Cost AI KYC Pushes Risk Qualification to the Lead Stage
“When you have KYC for free, you can KYC a lead versus the customer. So you start to have risk orientation up in your funnel and that changes who you even target.”
Brex Built Magbuy to Track Internal and Product Token Spend
“On Brex, we ended up building our internal version of this. We call it Magbuy, where the idea is you can effectively, you know, every dollar of token spend in the company, you can attribute to a product we have to customers, an internal tool that we use to ser…”
Brex Is Building a Customer World Model Ingesting Every User Touchpoint
“One of the things that We do at Brax now is building this customer world model is a similar idea where we're trying to get every single touch point that the customer has of us. Like literally like what, how many times they click a button to the dashboard all t…”
Brex's AI Recruiting Agent Auto-Passes 98% of Security Checks
“We have like a recruiting agent at Brax called Jim. We have a policy for Jim. And you know, all the traffic goes to that same policy and 98% requests go through automatically, two percent use an LLM.”
Franceschi: Extracting Unspoken Signals Is the Hardest Part of Startups
“I think one of the most, one of the hardest things of building a company is talking to customers and not, not just having the conversation, but how to extract the sort of unspoken signal from these conversations.”
Brex's Sales Team Now Runs on an Internal Customer World Model Agent
“Our client sales team. Now runs on our customer role model.”
The founders of Brex entered Y Combinator working on a VR startup
“There were the Brex founders, who I think were working on, like, a VR startup at the time.”
Epstein: Early Brex lacked user account creation, requiring manual password emails
“Brex, you know, which was, sorry, I was a credit card for startups. They didn't even have a way to create user accounts. Like you just like emailed them your password and that's how they set up the account for you.”
Alströmer: Brex recruited its first 10 customers from its YC batch
“When Brex was in Wicomner in winter of 2017, they recruited the first 10 customers directly from the YC batch.”
Alströmer: Brex co-founder Henrique Dubugras onboarded every early customer personally
“Customers just had a virtual credit card and Enrique from Brex actively onboarded every one of the customers himself.”
Epstein: Stripe, Coinbase, and Brex are three top-10 YC companies
“It also turns out that three of the YC top 10 are transactional businesses too. So these are companies like Stripe, Coinbase, and Brex.”