Boris Cherny

20 statements across 2 episodes · 12 bullish · 1 bearish · 1 people on the record · first statement Feb 17, 2026 by Boris Cherny · said 7 times in 3 episodes since 2026 · across every show →

On the record as a speaker too: Boris Cherny's record, appearances and statements → this page counts the times other people say the name.

Mentions by year

brought up most by Jared Friedman (5), Garry Tan (2)

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2026 7 mentions in 3 episodes 2 per episode

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Everything said about Boris Cherny, oldest first

Feb 17, 2026 neutral
Assertion Not checkable as stated
Cherny: Claude Code wrote only 10 percent of his code at launch
“Even in February when we GA'd it wrote maybe like 10% of my code or something like that. I didn't really use it to write code. It wasn't very good at it. I still wrote most of my code by hand.”
Boris Cherny Feb 17, 2026 ▶ 2:03 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 bullish
Disclosure
Cherny uninstalled his IDE and lands 20 AI-written PRs daily
“For me personally, it's been a hundred percent for like since Opus 4.5. I just, I uninstalled my IDE. I don't edit a single line of code by hand. It's just a hundred percent quad code in Opus. And you know, I land, you know, like 20 pairs a day, every day.”
Boris Cherny Feb 17, 2026 ▶ 43:52 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 neutral
Disclosure
Cherny built Claude Code in the terminal to avoid building a UI
“Yes, because I didn't have to build a UI. So it was just me.”
Boris Cherny Feb 17, 2026 ▶ 4:28 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 neutral
Insight
Cherny: AI makes traditional senior engineering opinions less relevant
“In my old job at a big company, when I hired like architects and this kind of a type of engineer, you look for people that have a lot of experience and really strong opinions, but it actually turns out a lot of this stuff just isn't relevant anymore. And a lot…”
Boris Cherny Feb 17, 2026 ▶ 16:18 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 positive
Assertion Not checkable as stated
Claude 3.5 Sonnet wrote AppleScript unprompted to detect Cherny's playing music
“And I asked it, what music am I listening to? He wrote some, like, Apple script to script my Mac and look up the music in my music player. And this was sauna 3.5.”
Boris Cherny Feb 17, 2026 ▶ 5:15 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 positive
Disclosure
Claude Code stayed a CLI because graphical UIs obsolete too quickly
“And really, I think that's why we stayed in the CLI is because we felt there is no UI we could build that would still be relevant in six months because the model was improving so quickly.”
Boris Cherny Feb 17, 2026 ▶ 8:39 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 bullish
Opinion
Cherny claims recent Claude Opus models execute plans without babysitting
“And nowadays what I find with Opus 4.5, I think it started with 4.6, it got really good. Once the plan is good, it just stays on track, and it'll just do the thing exactly right almost every time.”
Boris Cherny Feb 17, 2026 ▶ 27:30 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 positive
Insight
Cherny: Dev tool startups should enable what AI models naturally attempt
“The way I would frame it is think about the thing that the model wants to do and figure out how do you make that easier? And that's something that we saw, you know, like when I first started hacking on Claude code, I realized like this thing just wants to use …”
Boris Cherny Feb 17, 2026 ▶ 31:12 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 neutral
Assertion Not checkable as stated
Anthropic employees revolted when Claude Code hid bash output
“I remember early on, this is maybe six months ago, I tried to get rid of bash output, just internally, just to, like, summarize it, because I was like, these giant long bash commands, I don't actually care. And then I gave it to anthropic employees for a day, …”
Boris Cherny Feb 17, 2026 ▶ 12:09 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 bullish
Assertion Not checkable as stated
Claude Code increased Anthropic engineer productivity by 150 percent
“And since Quad Code came out, productivity per engineer at Anthropic has grown a 150%.”
Boris Cherny Feb 17, 2026 ▶ 41:02 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026
Insight
Cherny: The most effective AI engineers are hyper-specialists or hyper-generalists
“When I look at engineers on the team that I think are the most effective, there's essentially two, it's very bimodal. There's one side where it's extreme specialists and so, like, I named Jared before, like, he's a really good example of this, and kind of the …”
Boris Cherny Feb 17, 2026 ▶ 18:53 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 neutral
Insight
Scaffolding gains get wiped out by next-generation AI models
“There's this other general principle that I think is maybe interesting where you can build for the model and then you can build scaffolding around the model in order to improve performance a little bit. And depending on the domain, you can improve performance,…”
Boris Cherny Feb 17, 2026 ▶ 8:10 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026
Disclosure
No code in the Claude Code codebase is over six months old
“All of CloudCode has just been written and rewritten and rewritten and rewritten over and over and over. We unship tools every couple weeks. We add new tools every couple weeks. There's no part of CloudCode that was around six months ago. It's just constantly …”
Boris Cherny Feb 17, 2026 ▶ 39:28 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 bullish
Assertion Not checkable as stated
Claude Code autonomously wrote a tool to debug a memory leak
“And quad code, like took the heap dump. It wrote a little tool for itself to like analyze the heap dump. And then it found the leak faster than I did.”
Boris Cherny Feb 17, 2026 ▶ 15:28 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Feb 17, 2026 positive
Assertion Not checkable as stated
Cherny: Anthropic operates as a research lab prioritizing models over product
“So one is it operates as a research lab. So the product org was teeny, teeny, tiny. It's really all about building a safe model. That's all that matters. And so this idea of just being very close to the model and being very close to development and being not t…”
Boris Cherny Feb 17, 2026 ▶ 42:36 Inside Claude Code With Its Creator Boris Cherny · Y Combinator
Jul 27, 2026 positive
Insight
Cherny: Only Add System Prompt Instructions When Models Repeatedly Stumble
“The thing that you want to do is you want to run it. And if it's like a custom agentic product that you're building, you want to kind of run the products. You want to see where it fails with the model. You want to see what it does well. If you're using quad co…”
Boris Cherny Jul 27, 2026 ▶ 7:55 Boris Cherny: We Cut 80% of Claude Code’s Prompt · Y Combinator
Jul 27, 2026 positive
Insight
Cherny: Claude Code Users Should Delete CLAUDE.md Scaffolding Every Six Months
“Every six months, delete your Cloud MD. Delete your skills. Delete your hooks. See what the model does, and it might surprise you. And actually for Opus Five, this is something we really do recommend, is just try deleting all of these things, because the model…”
Boris Cherny Jul 27, 2026 ▶ 6:56 Boris Cherny: We Cut 80% of Claude Code’s Prompt · Y Combinator
Jul 27, 2026 bullish
Assertion Not checkable as stated
Cherny: Modern models can rewrite essentially any codebase into another language
“One example is the model can now rewrite essentially any code base from one language to a different language.”
Boris Cherny Jul 27, 2026 ▶ 15:46 Boris Cherny: We Cut 80% of Claude Code’s Prompt · Y Combinator
Jul 27, 2026 positive
Insight
Cherny: Prompt modern models with high-level guardrails, not micromanaged steps
“And for modern models, that's actually really not the way to do it. You want to go a little bit higher level. You want to describe the task. You want to describe the guardrails. You want to describe, like, the exit criteria, and then just go with the model coo…”
Boris Cherny Jul 27, 2026 ▶ 15:14 Boris Cherny: We Cut 80% of Claude Code’s Prompt · Y Combinator
Jul 27, 2026 negative
Insight
Cherny: Veteran engineers fail with AI models by over-specifying tasks
“When I look at engineers that have been, you know, coding for a long time, you know, like for years or for decades, this is a really, really common failure mode is trying to over specify and it's trying to be overly specific and then, you know, get the model t…”
Boris Cherny Jul 27, 2026 ▶ 24:10 Boris Cherny: We Cut 80% of Claude Code’s Prompt · Y Combinator
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