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Boris Cherny

Published podcast speaker

Claims
24
Episodes
1
Shows
1
Named items
3

Books, apps, and tools

The evidenced stack.

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app / recommends

Claude desktop app

“For people that are just learning to use Cowork, the thing I recommend is, so, you download the Claude desktop app”

Lenny's Podcast · 19 Feb 2026

Evidence receipt · Source ↗

app / uses

Cowork

“Like, I use Cowork every day now to do all sorts of things that are just not related to coding at all, and just to do it automatically.”

Lenny's Podcast · 19 Feb 2026

Evidence receipt · Source ↗

book / recommends

Functional Programming in Scala

“I'm a big reader. I would start with a technical book. It is Functional Programming in Scala. This is the single best technical book I have ever read. It's very weird, because you're probably not going to use Scala. And I don't know how much this matters in the future now, but there's this just elegance to functional programming and thinking in types, and this is just the way that I code, and the way that I can't stop thinking about coding.”

Lenny's Podcast · 19 Feb 2026

Evidence receipt · Source ↗

Claim ledger

What Boris said.

24 transcript-backed records

01 / recommendation

Recommends Functional Programming in Scala.

“I'm a big reader. I would start with a technical book. It is Functional Programming in Scala. This is the single best technical book I have ever read. It's very weird, because you're probably not going to use Scala. And I don't know how much this matters in the future now, but there's this just elegance to functional programming and thinking in types, and this is just the way that I code, and the way that I can't stop thinking about coding.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

02 / belief

I think a lot of people just don't really understand what this is, because they haven't used an agent before, and it just feels very, very similar, to me, to Claude Code a year ago.

“I think a lot of people just don't really understand what this is, because they haven't used an agent before, and it just feels very, very similar, to me, to Claude Code a year ago.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

04 / uncertainty

In the early days of Claude Code, I had no idea that this thing would be useful at all, because even in February when we released it, it was writing maybe, like, I don't know, 20% of my code, not more.

“In the early days of Claude Code, I had no idea that this thing would be useful at all, because even in February when we released it, it was writing maybe, like, I don't know, 20% of my code, not more.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

06 / belief

I do think that there is a future where I think by the end of the year what we're going to start to see is these start to get even murkier where I think in some places the title software engineer is going to start to go away, and it's just going to be replaced by builder or maybe it's just everyone is going to be a product manager and everyone codes, or something like this.

“I do think that there is a future where I think by the end of the year what we're going to start to see is these start to get even murkier where I think in some places the title software engineer is going to start to go away, and it's just going to be replaced by builder or maybe it's just everyone is going to be a product manager and everyone codes, or something like this.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

07 / belief

I think in the short-term it'll persist, but one thing that we're starting to see is there's maybe a 50% overlap in those roles where a lot of people are actually just doing the same thing, and some people have specialties.

“I think in the short-term it'll persist, but one thing that we're starting to see is there's maybe a 50% overlap in those roles where a lot of people are actually just doing the same thing, and some people have specialties.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

08 / belief

My take is I think for people that are using Claude Code, that are using agents to code today, you still have to understand the layer under, but, yeah, in a year or two, it's not going to matter.

“My take is I think for people that are using Claude Code, that are using agents to code today, you still have to understand the layer under, but, yeah, in a year or two, it's not going to matter.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

10 / belief

We call this multi-Claude-ing. So, it's a little more native I think for folks that are not engineers, and really this is back to bringing the product to where the people are.

“We call this multi-Claude-ing. So, it's a little more native I think for folks that are not engineers, and really this is back to bringing the product to where the people are.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

11 / belief

Facebook Dating I think started in a pretty similar place. And I think the observation was if you look at profile views, so, people looking at each other's profiles on Facebook, 60% of profile views were people that are not friends with each other that are opposite gender.

“Facebook Dating I think started in a pretty similar place. And I think the observation was if you look at profile views, so, people looking at each other's profiles on Facebook, 60% of profile views were people that are not friends with each other that are opposite gender.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

12 / belief

We didn't know that it would start in a terminal, or anything like this. But, in some ways, it's just totally unsurprising, because this has been our belief as a company for a long time.

“We didn't know that it would start in a terminal, or anything like this. But, in some ways, it's just totally unsurprising, because this has been our belief as a company for a long time.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

13 / belief

We released Claude Code really early, because we wanted to study safety. And we actually used it within Anthropic for I think four or five months, or something before we released it, because we weren't really sure.

“We released Claude Code really early, because we wanted to study safety. And we actually used it within Anthropic for I think four or five months, or something before we released it, because we weren't really sure.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

15 / evaluation

So, Wandering Earth is one of the short story collections, and he just has some really, really amazing stories. And it's also just quite interesting to see Chinese sci-fi, because it has a very different perspective than western sci-fi, and the way that, at least, he, as a writer, thinks about it.

“So, Wandering Earth is one of the short story collections, and he just has some really, really amazing stories. And it's also just quite interesting to see Chinese sci-fi, because it has a very different perspective than western sci-fi, and the way that, at least, he, as a writer, thinks about it.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

16 / commitment

This is something we have to figure out as a society, this is something we have to figure out as an industry. And I think, for me, also this is one of the reasons, it feels very important and urgent to do this work at Anthropic, because I think we take this very, very seriously.

“This is something we have to figure out as a society, this is something we have to figure out as an industry. And I think, for me, also this is one of the reasons, it feels very important and urgent to do this work at Anthropic, because I think we take this very, very seriously.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

18 / evaluation

That's a weird way to design it, and that wasn't really the intention. But from the start I built it in a terminal, because for the first couple months it was just me.

“That's a weird way to design it, and that wasn't really the intention. But from the start I built it in a terminal, because for the first couple months it was just me.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

19 / prediction

The thing that happens is sometimes people try to use a less expensive model like Sonnet, or something like this, but because it's less intelligent, it actually takes more tokens in the end to do the same task.

“The thing that happens is sometimes people try to use a less expensive model like Sonnet, or something like this, but because it's less intelligent, it actually takes more tokens in the end to do the same task.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

20 / preference

That said, not everyone feels this way. So, for example, there's one engineer on the team, Lena, who was still writing C++ on the weekends by hand, because for her she just really enjoys writing C++ by hand.

“That said, not everyone feels this way. So, for example, there's one engineer on the team, Lena, who was still writing C++ on the weekends by hand, because for her she just really enjoys writing C++ by hand.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

21 / evaluation

Like, Facebook, Instagram, WhatsApp, all this stuff. And a lot of that was about productivity, because if you make the code higher quality, then engineers are more productive.

“Like, Facebook, Instagram, WhatsApp, all this stuff. And a lot of that was about productivity, because if you make the code higher quality, then engineers are more productive.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast

22 / evaluation

They fall in love with the product, and then they tell us about stuff that doesn't work, stuff that they want. And so, the only reason that it keeps improving is because everyone is using it, everyone is talking about it, everyone keeps giving feedback.

“They fall in love with the product, and then they tell us about stuff that doesn't work, stuff that they want. And so, the only reason that it keeps improving is because everyone is using it, everyone is talking about it, everyone keeps giving feedback.”
Speaker
Boris Cherny
Publisher
Lenny's Podcast
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