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Published · transcript-backed

Alessio Fanelli: uncertainty

6 Feb 2025 Latent Space Agent Engineering with Pydantic + Graphs — with Samuel Colvin

“All right. So the first one I saw this new I don't know if it's like a product you're building the Pydantic that run, which is a Python browser sandbox.”

— Alessio Fanelli

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Speaker
Alessio Fanelli
Attribution
Verified speaker
Claim type
uncertainty
Recorded
6 Feb 2025
Publisher
Latent Space

Transcript context

…So to be clear, LogFire is co-sourced. So Pydantic and Pydantic AI are MIT licensed and like properly open source. And then LogFire for now is completely closed source. And in fact, the struggles that Sentry have had with licensing and the like weird pushback the community gives when they take something that's closed source and make it source available just meant that we just avoided that whole subject matter. I think the other way to look at it is like in terms of either headcount or revenue or dollars in the bank. The amount of open source we do as a company is we've got to be open source. We're up there with the most prolific open source companies, like I say, per head. And so we didn't feel like we were morally obligated to make LogFire open source. We have Pydantic. Pydantic is a foundational library in Python. That and now Pydantic AI are our contribution to open source. And then LogFire is like openly for profit, right? As in we're not claiming otherwise. We're not sort of trying to walk a line if it's open source. But really, we want to make it hard to deploy. So you probably want to pay us. We're trying to be straight. That it's to pay for. We could change that at some point in the future, but it's not an immediate plan. All right. So the first one I saw this new I don't know if it's like a product you're building the Pydantic that run, which is a Python browser sandbox. What was the inspiration behind that? We talk a lot about code interpreter for lamps. I'm an investor in a company called E2B, which is a code sandbox as a service for remote execution. Yeah. What's the Pydantic that run story? So Pydantic that run is again completely open source. I have no interest in making it into a product. We just needed a sandbox to be able to demo LogFire in particular, but also Pydantic AI. So it doesn't have it yet, but I'm going to add basically a proxy to OpenAI and the other models so that you can run Pydantic AI in the browser. See how it works. Tweak the prompt, et cetera, et cetera. And we'll have some kind of limit per day of what you can spend on it or like what the spend is. The other thing we wanted to be able to do was to be able to when you log into LogFire. We have quite a lot of drop off of like a lot of people sign up, find it interesting and then don't go and create a project. And my intuition is that they're like, oh, OK, cool. But now I have to go and open up my development environment, create a new project, do something with the right token. I can't be bothered. And then they drop off and they forget to come back. And so we wanted a really nice way of being able to click here and you can run it in the browser and see what it does. As I think happens to all of us, I sort of started seeing if I could do it a week and a half ago. Got something to run. And then ended up, you know, improving it. And suddenly I spent a week on it. But I think it's useful. Yeah.…

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