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Boris Cherny ( Boris Cherny ) created Claude Code, but few know his full career story. I interviewed him about how he grew as an engineer (episode dropping next week), we discussed: • Why every engineer needs "side quests" • Why being under leveled is a good thing •... show more

Ryan Peterman

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72,222 views • 9 months ago •via X (Twitter)

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Boris Cherny ( Boris Cherny ) created Claude Code, but few know his full career story. Today I'm sharing an interview with him about how he grew as an engineer, we discussed: • Why every engineer needs "side quests" • Why being under leveled is a good thing • The story behind his growth to Principal (IC8) at Meta • Technical book that had the biggest impact on him as an engineer • The most important principle in product engineering • Claude Code stories & competition in AI coding products You can find the full episode here: • YouTube: • Spotify: • Transcript: • Apple:

Boris Cherny ( Boris Cherny ) created Claude Code, but few know his full career story. Today I'm sharing an interview with him about how he grew as an engineer, we discussed: • Why every engineer needs "side quests" • Why being under leveled is a good thing • The story behind his growth to Principal (IC8) at Meta • Technical book that had the biggest impact on him as an engineer • The most important principle in product engineering • Claude Code stories & competition in AI coding products You can find the full episode here: • YouTube: • Spotify: • Transcript: • Apple:

Ryan Peterman

578,180 views • 9 months ago

Boris Cherny (Creator of Claude Code): "The one technical book I would recommend to everyone that has had the greatest impact on me as an engineer is functional programming in Scala. You're probably never going to use Scala day today, but the way it teaches you to think about coding problems is just such a change from the way that most people were in coding, either practically or in school. It's just. It's incredible. It's going to completely change the way that you code now. I think in types, when I code, the thing that matters in your code the most is the type signatures. This is more important than the code itself." Boris Cherny

Boris Cherny (Creator of Claude Code): "The one technical book I would recommend to everyone that has had the greatest impact on me as an engineer is functional programming in Scala. You're probably never going to use Scala day today, but the way it teaches you to think about coding problems is just such a change from the way that most people were in coding, either practically or in school. It's just. It's incredible. It's going to completely change the way that you code now. I think in types, when I code, the thing that matters in your code the most is the type signatures. This is more important than the code itself." Boris Cherny

Ryan Peterman

365,032 views • 5 months ago

Claude Code creator, Boris Cherny: "I'm not prompting my agents anymore. I'm building Loops that do it for me." In 10 minutes he explains how they do agentic engineering at Anthropic, and why they stopped prompting a long time ago. The one talk I'd send to every engineer I know Watch it, then read the full guide on Loops and Graphs below

Claude Code creator, Boris Cherny: "I'm not prompting my agents anymore. I'm building Loops that do it for me." In 10 minutes he explains how they do agentic engineering at Anthropic, and why they stopped prompting a long time ago. The one talk I'd send to every engineer I know Watch it, then read the full guide on Loops and Graphs below

Mahax

44,649 views • 9 days ago

David Singleton ( David Singleton ) was the CTO at Stripe for 7 years before he left to start /dev/agents. Prior to Stripe, he grew from a junior engineer to a VP at Google. I recently asked him about everything he knows about career growth and being an excellent engineering leader. We discussed: • How he grew from an IC to a VP at Google • How to hire at scale without Leetcode • Writing code as a senior leader • The story behind becoming Stripe’s CTO • The top book and habit that impacted his career Where to watch: • Youtube: • Spotify: • Apple Podcasts: What’s funny is in conversation I discovered that Philip Su (from a previous episode) and David were constantly battling for the top talent in London Philip was the London site director for Meta and David was his counterpart at Google. They grew close out of mutual respect and it’s why Philip spoke highly of David’s expertise If you haven’t seen the Philip episode I also recommend that one:

David Singleton ( David Singleton ) was the CTO at Stripe for 7 years before he left to start /dev/agents. Prior to Stripe, he grew from a junior engineer to a VP at Google. I recently asked him about everything he knows about career growth and being an excellent engineering leader. We discussed: • How he grew from an IC to a VP at Google • How to hire at scale without Leetcode • Writing code as a senior leader • The story behind becoming Stripe’s CTO • The top book and habit that impacted his career Where to watch: • Youtube: • Spotify: • Apple Podcasts: What’s funny is in conversation I discovered that Philip Su (from a previous episode) and David were constantly battling for the top talent in London Philip was the London site director for Meta and David was his counterpart at Google. They grew close out of mutual respect and it’s why Philip spoke highly of David’s expertise If you haven’t seen the Philip episode I also recommend that one:

Ryan Peterman

67,995 views • 1 year ago

Boris Cherny: "I don't write code anymore, I just prompt with Claude" he spent 57 minutes explaining exactly where this is all going here's what stood out: > Claude Code grew faster than anyone at Anthropic expected > AI agents are moving beyond coding into every industry > running 1,000 agents in parallel is already happening > SaaS may not survive the agent era if the Head of Claude Code prompts instead of codes, what does that tell you about the next 2 years? that's exactly why I put together an article on Claude features most people don't know exist it will change how you work with Claude completely you can find it below

Boris Cherny: "I don't write code anymore, I just prompt with Claude" he spent 57 minutes explaining exactly where this is all going here's what stood out: > Claude Code grew faster than anyone at Anthropic expected > AI agents are moving beyond coding into every industry > running 1,000 agents in parallel is already happening > SaaS may not survive the agent era if the Head of Claude Code prompts instead of codes, what does that tell you about the next 2 years? that's exactly why I put together an article on Claude features most people don't know exist it will change how you work with Claude completely you can find it below

Anatoli Kopadze

20,003 views • 4 months ago

Boris Cherny, the creator of Claude Code: "Most people use Claude Code as a chatbot. It was built to run an entire engineering team." In 30 minutes on stage, he explains how he now works by directing agents instead of writing code by hand. Watch full video, then save the exact setup below👇

Boris Cherny, the creator of Claude Code: "Most people use Claude Code as a chatbot. It was built to run an entire engineering team." In 30 minutes on stage, he explains how he now works by directing agents instead of writing code by hand. Watch full video, then save the exact setup below👇

darkzodchi

35,506 views • 3 months ago

Claude Code creator: "Loops are as big a step as move from source code to agents. Loops - step from agents to the next thing. 30% of my code is fully written by loops right now." in a 40-minute fireside chat, Boris Cherny reveals his actual working setup. Loops + dynamic workflows + routines, and more. Watch the full episode, then read the article on loop engineering below.

Claude Code creator: "Loops are as big a step as move from source code to agents. Loops - step from agents to the next thing. 30% of my code is fully written by loops right now." in a 40-minute fireside chat, Boris Cherny reveals his actual working setup. Loops + dynamic workflows + routines, and more. Watch the full episode, then read the article on loop engineering below.

Movez

379,160 views • 3 months ago

In software engineering we have so crossed the line. This is from Claude Code creator Boris Cherny (Boris Cherny ) "I don't write code; I prompt Claude. Actually, nowadays, what I'm mostly doing is having one Claude prompt other Claudes. So I don't even talk to Claude directly. I have a Claude that's talking to my other Claudes. I think in engineering, we've seen an explosion in the amount of leverage that a single person has. It's about how big of a business one person can build and how many products one person can support." ---- From "Alex Kantrowitz" (Alex Kantrowitz) YouTube channel, (full video link in comment)

In software engineering we have so crossed the line. This is from Claude Code creator Boris Cherny (Boris Cherny ) "I don't write code; I prompt Claude. Actually, nowadays, what I'm mostly doing is having one Claude prompt other Claudes. So I don't even talk to Claude directly. I have a Claude that's talking to my other Claudes. I think in engineering, we've seen an explosion in the amount of leverage that a single person has. It's about how big of a business one person can build and how many products one person can support." ---- From "Alex Kantrowitz" (Alex Kantrowitz) YouTube channel, (full video link in comment)

Rohan Paul

22,852 views • 2 months ago

Claude Code creator Boris Cherny: "Verification is the single most important part of closed-loop development" "Companies underinvest in it, and that is the biggest mistake" In a 26-minute talk, Boris breaks down real AI coding loops with Spotify's Chief Engineer: 00:00 - Closed-loop development 08:33 - Why one-shot code generation fails 10:02 - Agentic verifier and PR success rate 12:00 - Verification loops without humans in the loop 14:00 - Tests, skills, CLAUDE.md, and MCP as the loop infrastructure 20:11 - Why consistent codebases make agents work better This one video is worth more than 100 Claude coding setup tutorials Bookmark and watch it today Then read the full guide on loop engineering below

Claude Code creator Boris Cherny: "Verification is the single most important part of closed-loop development" "Companies underinvest in it, and that is the biggest mistake" In a 26-minute talk, Boris breaks down real AI coding loops with Spotify's Chief Engineer: 00:00 - Closed-loop development 08:33 - Why one-shot code generation fails 10:02 - Agentic verifier and PR success rate 12:00 - Verification loops without humans in the loop 14:00 - Tests, skills, CLAUDE.md, and MCP as the loop infrastructure 20:11 - Why consistent codebases make agents work better This one video is worth more than 100 Claude coding setup tutorials Bookmark and watch it today Then read the full guide on loop engineering below

rari

73,236 views • 2 months ago

Claude Code Creator: “90% of companies we work with don’t use verification loops - that’s their biggest mistake. more than 40% of my code is already written by "loops", and I’m sure this share will only grow.” in a 25-minute talk, Boris Cherny discusses the best coding workflows with Spotify’s Chief Engineer. This one video will replace 100 YouTube Claude coding setup tutorials. Watch it today, then read the full guide on loop engineering below.

Claude Code Creator: “90% of companies we work with don’t use verification loops - that’s their biggest mistake. more than 40% of my code is already written by "loops", and I’m sure this share will only grow.” in a 25-minute talk, Boris Cherny discusses the best coding workflows with Spotify’s Chief Engineer. This one video will replace 100 YouTube Claude coding setup tutorials. Watch it today, then read the full guide on loop engineering below.

Movez

107,620 views • 2 months ago

Joakim Recht (Uber Distinguished Eng) on tech leads: "Software engineers need to write code. If you're not writing code, you're not a software engineer." Joakim grew from a Senior Engineer to a Distinguished Engineer at Uber and I asked him what it took to get there. We covered: • The project that grew his career • What makes a great software engineer • Learnings from promo committees • When promos are unfair • Biggest technical mistake at Uber in hindsight • Advice for his younger self 𝗣𝗼𝗱𝗰𝗮𝘀𝘁 𝗹𝗶𝗻𝗸𝘀: • YouTube: • Transcript: • Spotify: • Apple:

Joakim Recht (Uber Distinguished Eng) on tech leads: "Software engineers need to write code. If you're not writing code, you're not a software engineer." Joakim grew from a Senior Engineer to a Distinguished Engineer at Uber and I asked him what it took to get there. We covered: • The project that grew his career • What makes a great software engineer • Learnings from promo committees • When promos are unfair • Biggest technical mistake at Uber in hindsight • Advice for his younger self 𝗣𝗼𝗱𝗰𝗮𝘀𝘁 𝗹𝗶𝗻𝗸𝘀: • YouTube: • Transcript: • Spotify: • Apple:

Ryan Peterman

72,321 views • 10 months ago

Claude Code cracked something open for us Every 🧱. Now I ship to codebases I barely know, every feature we ship makes the next one easier, and non-technical members of the team use the terminal. I’m genuinely grateful. So I brought its creators, Cat Wu (cat) and Boris Cherny (Boris Cherny) from Anthropic, on AI & I to say thank you—and to talk about everything they’ve learned from building Claude Code. We get into: • The workflows Anthropic’s smartest engineers use to push Claude Code to its limits. Why they pit subagents against each other to get cleaner results, how they turn past code into leverage, and the slash commands and MCPs they rely on most. • The product lessons behind one of the most loved AI agents in the world. How the team balances simplicity and power—building a tool that anyone can use, but that experts can bend to their will—and their philosophy of “unshipping,” or cutting back whenever there’s a simpler, more intuitive path to user intent. • A peek into the future of coding with AI. The new form factors they’re experimenting with to make Claude Code more autonomous, more reliable, and more accessible to non-technical users This is a must-watch for anyone—both technical and non-technical—who wants to learn how to use Claude Code like the people who built it. Watch below! Timestamps: Introduction: 00:01:26 Claude Code’s origin story: 00:02:25 How Anthropic dogfoods Claude Code: 00:07:03 Boris and Cat’s favorite slash commands: 00:14:06 How Boris uses Claude Code to plan feature development: 00:15:49 Everything Anthropic has learned about using sub-agents well: 00:21:53 Use Claude Code to turn past code into leverage: 00:26:16 The product decisions for building an agent that’s simple and powerful: 00:33:14 Making Claude Code accessible to the non-technical user: 00:36:38 The next form factor for coding with AI: 00:45:12

Claude Code cracked something open for us Every 🧱. Now I ship to codebases I barely know, every feature we ship makes the next one easier, and non-technical members of the team use the terminal. I’m genuinely grateful. So I brought its creators, Cat Wu (cat) and Boris Cherny (Boris Cherny) from Anthropic, on AI & I to say thank you—and to talk about everything they’ve learned from building Claude Code. We get into: • The workflows Anthropic’s smartest engineers use to push Claude Code to its limits. Why they pit subagents against each other to get cleaner results, how they turn past code into leverage, and the slash commands and MCPs they rely on most. • The product lessons behind one of the most loved AI agents in the world. How the team balances simplicity and power—building a tool that anyone can use, but that experts can bend to their will—and their philosophy of “unshipping,” or cutting back whenever there’s a simpler, more intuitive path to user intent. • A peek into the future of coding with AI. The new form factors they’re experimenting with to make Claude Code more autonomous, more reliable, and more accessible to non-technical users This is a must-watch for anyone—both technical and non-technical—who wants to learn how to use Claude Code like the people who built it. Watch below! Timestamps: Introduction: 00:01:26 Claude Code’s origin story: 00:02:25 How Anthropic dogfoods Claude Code: 00:07:03 Boris and Cat’s favorite slash commands: 00:14:06 How Boris uses Claude Code to plan feature development: 00:15:49 Everything Anthropic has learned about using sub-agents well: 00:21:53 Use Claude Code to turn past code into leverage: 00:26:16 The product decisions for building an agent that’s simple and powerful: 00:33:14 Making Claude Code accessible to the non-technical user: 00:36:38 The next form factor for coding with AI: 00:45:12

Dan Shipper 📧

57,619 views • 11 months ago

The person who built Claude Code just explained how he is using it "Now I just have an army of agents that are doing stuff" Only 18 minutes, the best Claude guide on the internet right now. Boris Cherny covered: > how Claude Code is moving beyond just engineers > routines for CI, code review, and daily workflows > why the loop is the next big leap > working with hundreds of agents at once everything is already running through agents, ignoring this is not an option that's exactly why I wrote a full guide on how to build one yourself with Claude Code article below

The person who built Claude Code just explained how he is using it "Now I just have an army of agents that are doing stuff" Only 18 minutes, the best Claude guide on the internet right now. Boris Cherny covered: > how Claude Code is moving beyond just engineers > routines for CI, code review, and daily workflows > why the loop is the next big leap > working with hundreds of agents at once everything is already running through agents, ignoring this is not an option that's exactly why I wrote a full guide on how to build one yourself with Claude Code article below

Anatoli Kopadze

16,858 views • 3 months ago

Fresh off the launch of Opus 5, Claude Code creator Boris Cherny (Boris Cherny) joins YC's Diana at Startup School 2026 to talk about what the newest models can do, how Claude Code came to be, and what it means to build products when the underlying capabilities keep accelerating. 00:07 — What Makes Opus 5 Different 02:06 — Solving Prompt Injection 03:21 — Why Claude Code Deleted 80% of Its System Prompt 06:37 — Press Delete on Your AI Product 07:20 — How to Rebuild Your System Prompt 10:30 — Product Overhang and “Unhobbling” AI 14:26 — Give Claude Harder Problems 19:32 — Prompt Engineering Is Changing 21:57 — The Two-Week Claude Code Prompt 24:42 — Running Thousands of AI Agents 30:15 — Coding Is (Almost) Solved 32:20 — What Every CS Student Should Still Learn Anthropic Claude

Fresh off the launch of Opus 5, Claude Code creator Boris Cherny (Boris Cherny) joins YC's Diana at Startup School 2026 to talk about what the newest models can do, how Claude Code came to be, and what it means to build products when the underlying capabilities keep accelerating. 00:07 — What Makes Opus 5 Different 02:06 — Solving Prompt Injection 03:21 — Why Claude Code Deleted 80% of Its System Prompt 06:37 — Press Delete on Your AI Product 07:20 — How to Rebuild Your System Prompt 10:30 — Product Overhang and “Unhobbling” AI 14:26 — Give Claude Harder Problems 19:32 — Prompt Engineering Is Changing 21:57 — The Two-Week Claude Code Prompt 24:42 — Running Thousands of AI Agents 30:15 — Coding Is (Almost) Solved 32:20 — What Every CS Student Should Still Learn Anthropic Claude

Y Combinator

85,554 views • 2 months ago

"How do people learn to use Claude Code like Boris?" Claude Code creator Boris Cherny (Boris Cherny ) was asked by Diana Hu ( Diana ) at Startup School 2026. Boris Cherny: "Maybe don’t listen to the LinkedIn influencers. The thing about the model is that everyone is looking for one weird trick to make it work, but that simply doesn’t exist. There is nothing like that. You have to approach the model empirically. Give it a task that is too hard. Give it the tools to verify its work, just as you would use those tools yourself if you were doing the task. See where it struggles, and then fix the problem with better prompting, a skill, or if the model is missing context, an MCP connection that allows it to retrieve the context it needs. That is basically it. It sounds very simple. I think people tend to overthink and overengineer it because, in many ways, that is how we had to build systems in the past." ---- From "Y Combinator" YouTube channel, (full video link in comment)

"How do people learn to use Claude Code like Boris?" Claude Code creator Boris Cherny (Boris Cherny ) was asked by Diana Hu ( Diana ) at Startup School 2026. Boris Cherny: "Maybe don’t listen to the LinkedIn influencers. The thing about the model is that everyone is looking for one weird trick to make it work, but that simply doesn’t exist. There is nothing like that. You have to approach the model empirically. Give it a task that is too hard. Give it the tools to verify its work, just as you would use those tools yourself if you were doing the task. See where it struggles, and then fix the problem with better prompting, a skill, or if the model is missing context, an MCP connection that allows it to retrieve the context it needs. That is basically it. It sounds very simple. I think people tend to overthink and overengineer it because, in many ways, that is how we had to build systems in the past." ---- From "Y Combinator" YouTube channel, (full video link in comment)

Rohan Paul

55,255 views • 2 months ago

Boris Cherny, the creator of Claude Code, just explained why the features most users never find are the ones that matter most in this podcast he breaks down not just how to use Claude, but what it all means for the next few years: > the right way to give Claude context before it starts working > why giving it too much information is just as bad as too little > how Claude Code is already changing how engineers build things > how the people who built Claude actually use it day to day based on this podcast and months of using Claude myself, I put together a guide on everything Claude can do that most people have no idea exists you can find it below

Boris Cherny, the creator of Claude Code, just explained why the features most users never find are the ones that matter most in this podcast he breaks down not just how to use Claude, but what it all means for the next few years: > the right way to give Claude context before it starts working > why giving it too much information is just as bad as too little > how Claude Code is already changing how engineers build things > how the people who built Claude actually use it day to day based on this podcast and months of using Claude myself, I put together a guide on everything Claude can do that most people have no idea exists you can find it below

Anatoli Kopadze

22,540 views • 4 months ago

Claude Code creator, Boris Cherny: "Every night I have hundreds, sometimes thousands of agents running in loops for 5, 10, 20 hours straight. This is just how engineering is done now." That's the shift that will define the rest of 2026. 53 minutes of pure insight from the creator of the tool every AI engineer now uses. Watch it, then read the full guide on loops below.

Claude Code creator, Boris Cherny: "Every night I have hundreds, sometimes thousands of agents running in loops for 5, 10, 20 hours straight. This is just how engineering is done now." That's the shift that will define the rest of 2026. 53 minutes of pure insight from the creator of the tool every AI engineer now uses. Watch it, then read the full guide on loops below.

Anatoli Kopadze

107,123 views • 3 months ago

Anthropic just dropped a 3-hour course on how to actually master Claude Code, taught by the engineer who built it: 00:07 – everything new in Claude Code 24:39 – Boris Cherny builds a full app live 55:38 – the complete prompting playbook 1:29:07 – the "thinking" lever almost everyone misses 1:52:58 – how to pick the right model for the job 2:24:22 – how Anthropic itself codes with Claude This 3-hour watch will replace 10 paid Claude Code courses on the internet. Watch it now, then read how to build an AI that codes while you sleep, in the article below.

Anthropic just dropped a 3-hour course on how to actually master Claude Code, taught by the engineer who built it: 00:07 – everything new in Claude Code 24:39 – Boris Cherny builds a full app live 55:38 – the complete prompting playbook 1:29:07 – the "thinking" lever almost everyone misses 1:52:58 – how to pick the right model for the job 2:24:22 – how Anthropic itself codes with Claude This 3-hour watch will replace 10 paid Claude Code courses on the internet. Watch it now, then read how to build an AI that codes while you sleep, in the article below.

Phosphen

103,295 views • 2 months ago

Boris Cherny (creator of Claude Code, Anthropic): "My entire CLAUDE.md is two lines. With every new model you need less instruction, not more, most people are over-engineering the one thing that should stay tiny." in a 7-minute interview, Boris Cherny breaks down why the smallest AI-coding setup wins, and the one moment you should delete your config and start from scratch most engineers do the opposite: they pile on rules, build scaffolding around the model… then the next model ships and makes all of it useless. what he actually keeps in those two lines, and why he tells his team to throw the rest away. Watch the talk, then read the article below. That’s worth more than a $800 course on agent engineering.

Boris Cherny (creator of Claude Code, Anthropic): "My entire CLAUDE.md is two lines. With every new model you need less instruction, not more, most people are over-engineering the one thing that should stay tiny." in a 7-minute interview, Boris Cherny breaks down why the smallest AI-coding setup wins, and the one moment you should delete your config and start from scratch most engineers do the opposite: they pile on rules, build scaffolding around the model… then the next model ships and makes all of it useless. what he actually keeps in those two lines, and why he tells his team to throw the rest away. Watch the talk, then read the article below. That’s worth more than a $800 course on agent engineering.

Prometheus

238,143 views • 3 months ago

Adam Ernst is a Distinguished Eng (IC9) at Meta who has built iOS infra that impacted the entire company. He's someone I've always looked up to ever since I first started at Meta. We discussed: • How to influence engineers • Why code review is undervalued • Projects that got him promoted • Learnings from a major failed project • Examples of engineers he admires • Advice for his younger self His style of influence is one of my favorites; he's the type of engineer that digs deep and solves problems others can't. He's an engineer who embodies "Talk is cheap. Show me the code." Hope you enjoy the episode and learn something new Where to watch: • YouTube: • Spotify: • Apple Podcasts: • Transcript:

Adam Ernst is a Distinguished Eng (IC9) at Meta who has built iOS infra that impacted the entire company. He's someone I've always looked up to ever since I first started at Meta. We discussed: • How to influence engineers • Why code review is undervalued • Projects that got him promoted • Learnings from a major failed project • Examples of engineers he admires • Advice for his younger self His style of influence is one of my favorites; he's the type of engineer that digs deep and solves problems others can't. He's an engineer who embodies "Talk is cheap. Show me the code." Hope you enjoy the episode and learn something new Where to watch: • YouTube: • Spotify: • Apple Podcasts: • Transcript:

Ryan Peterman

194,871 views • 7 months ago