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Boris Cherny says internally Anthropic uses the same models as everyone else, with some Mythos, which will eventually ship as a descendant to the public "there's no manually written code anywhere at the company" Internally, Claudes talk to each other all day over Slack, coding in loops, resolving unknowns... show more

Haider.

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208,247 views • 3 months ago •via X (Twitter)

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Anthropic’s Boris Cherny: - Internally, they use the same models as everyone else + a bit Claude Mythos, mainly Opus 4.7 - A toned-down version of Claude Mythos will be released in the foreseeable future (but that was to be expected).

Anthropic’s Boris Cherny: - Internally, they use the same models as everyone else + a bit Claude Mythos, mainly Opus 4.7 - A toned-down version of Claude Mythos will be released in the foreseeable future (but that was to be expected).

Chubby♨️

61,934 views • 3 months ago

Claude Code creator: "At Anthropic, 90% of our engineers are running agents with self-improving loops. in 3-6 months, everyone will be running /loops - this is the future of engineering" in a 1-hour podcast, Boris Cherny reveals the best tips for building Claude Code automations. Claude + loops + routines + dynamic workflows - that’s the secret. Watch the talk, then read how to apply and build the same setup in the article below.

Claude Code creator: "At Anthropic, 90% of our engineers are running agents with self-improving loops. in 3-6 months, everyone will be running /loops - this is the future of engineering" in a 1-hour podcast, Boris Cherny reveals the best tips for building Claude Code automations. Claude + loops + routines + dynamic workflows - that’s the secret. Watch the talk, then read how to apply and build the same setup in the article below.

Movez

269,612 views • 1 month ago

Boris Cherny: "Claude Code is 100% written by Claude Code, Cowork is 100% written by Claude Code" across all of Anthropic, 90% of code is written by Claude lawyers, designers, finance people are building real things with Claude Code right now with no CS degree, no background, nothing the people who built the tool use the tool to build the tool think about what that means for everyone else the guide on everything Claude can actually do is in the article below

Boris Cherny: "Claude Code is 100% written by Claude Code, Cowork is 100% written by Claude Code" across all of Anthropic, 90% of code is written by Claude lawyers, designers, finance people are building real things with Claude Code right now with no CS degree, no background, nothing the people who built the tool use the tool to build the tool think about what that means for everyone else the guide on everything Claude can actually do is in the article below

Anatoli Kopadze

90,364 views • 2 months ago

Anthropic CFO: "Right now within the company, 90% of our code is written by Claude Code. If we told our team they couldn't use our models, it would save us billions in revenue." in 1-hour podcast, Anthropic's CFO reveals how they use Claude Code internally to build a trillion company. Watch it today. Worth more than a $500 vibe-coding course

Anthropic CFO: "Right now within the company, 90% of our code is written by Claude Code. If we told our team they couldn't use our models, it would save us billions in revenue." in 1-hour podcast, Anthropic's CFO reveals how they use Claude Code internally to build a trillion company. Watch it today. Worth more than a $500 vibe-coding course

Codez

36,659 views • 2 months ago

Anthropic CEO Dario Amodei: "Some early companies got Mythos and told us this is a super weapon, please don't release it" On leaving OpenAI: "When you can't trust someone, and their values don't match what they say, it becomes very hard to stay" Boris Cherny, head of Claude Code: "90% of code at Anthropic is written by Claude, a lot of Claude Code is written by Claude Code" Then Dario says the quiet part even louder: 10–25% odds of civilizational collapse from AI 47 minutes Free Dario, Daniela, Boris Probably the deepest look inside Anthropic ever filmed Mythos Claude Code OpenAI split Superweapon models 90% AI-written code Bookmark it and watch ↓

Anthropic CEO Dario Amodei: "Some early companies got Mythos and told us this is a super weapon, please don't release it" On leaving OpenAI: "When you can't trust someone, and their values don't match what they say, it becomes very hard to stay" Boris Cherny, head of Claude Code: "90% of code at Anthropic is written by Claude, a lot of Claude Code is written by Claude Code" Then Dario says the quiet part even louder: 10–25% odds of civilizational collapse from AI 47 minutes Free Dario, Daniela, Boris Probably the deepest look inside Anthropic ever filmed Mythos Claude Code OpenAI split Superweapon models 90% AI-written code Bookmark it and watch ↓

rari

65,014 views • 1 month ago

Building with AI requires organizations to embrace a new mindset alongside new tools. In the next episode of Advanced Insights, Head of Claude Code at Anthropic Boris Cherny (Boris Cherny) joins Mark Papermaster for a conversation on how AI is accelerating workflows and the importance of fostering experimentation across teams. Full episode coming soon.

Building with AI requires organizations to embrace a new mindset alongside new tools. In the next episode of Advanced Insights, Head of Claude Code at Anthropic Boris Cherny (Boris Cherny) joins Mark Papermaster for a conversation on how AI is accelerating workflows and the importance of fostering experimentation across teams. Full episode coming soon.

AMD

70,434 views • 26 days ago

Creator of Claude Code: "At Anthropic, almost 100% of our engineers are running 100+ agents with self-improving loops self-improving loops help agents become better with each run." in a 1-hour podcast, Boris explains how they build agents loops from sratch. Claude + loops + routines + dynamic workflows - that’s the secret. Watch the talk, then read how to apply the same playbook to quant trading below.

Creator of Claude Code: "At Anthropic, almost 100% of our engineers are running 100+ agents with self-improving loops self-improving loops help agents become better with each run." in a 1-hour podcast, Boris explains how they build agents loops from sratch. Claude + loops + routines + dynamic workflows - that’s the secret. Watch the talk, then read how to apply the same playbook to quant trading below.

Movez

637,338 views • 1 month ago

Boris Cherny (Claude Code's creator): I deleted my IDE in November and hasn't opened it since. I writes more code than ever. his actual words on stage: I don't prompt Claude anymore. I have loops that are running. They're the ones prompting Claude. My job is to write loops. the progression he described: → a year ago: writing code by hand with autocomplete → then: running 5-10 Claudes in parallel, prompting each one → now: he doesn't prompt at all - he writes the loops that prompt Claude what it's already done inside Anthropic: • ~3x more code shipped per engineer (he says that number is already outdated and higher) • Cowork - a full product - built in ~8 days, 100% with Claude Code • designers, the finance guy, even the chief of staff now ship code his advice to founders: give everyone as many tokens as possible, and underfund every project on purpose - 2 engineers + a pile of tokens instead of 4. the roles are melting into one "builder." Watch this, than read the article below

Boris Cherny (Claude Code's creator): I deleted my IDE in November and hasn't opened it since. I writes more code than ever. his actual words on stage: I don't prompt Claude anymore. I have loops that are running. They're the ones prompting Claude. My job is to write loops. the progression he described: → a year ago: writing code by hand with autocomplete → then: running 5-10 Claudes in parallel, prompting each one → now: he doesn't prompt at all - he writes the loops that prompt Claude what it's already done inside Anthropic: • ~3x more code shipped per engineer (he says that number is already outdated and higher) • Cowork - a full product - built in ~8 days, 100% with Claude Code • designers, the finance guy, even the chief of staff now ship code his advice to founders: give everyone as many tokens as possible, and underfund every project on purpose - 2 engineers + a pile of tokens instead of 4. the roles are melting into one "builder." Watch this, than read the article below

Morty

136,663 views • 2 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

364,784 views • 3 months ago

Boris Cherny, the creator of Claude Code at Anthropic, just explained why most people aren't getting real results from Claude in this talk he breaks down exactly how most people skipped the setup entirely: - 90% of code at Anthropic is written by Claude itself - the 14% you lose to CLAUDE.md before typing a word - lawyers, designers, and finance people are building real things with it - no CS degree. no background. nothing Boris Cherny: "Claude Code is 100% written by Claude Code, Cowork is 100% written by Claude Code" if you've been using Claude for months and never configured a single thing, you skipped the 20 steps that change everything. probably 25 instead of another show tonight, watch this make sure to bookmark it before it gets lost in your feed my breakdown of all 25 features is below

Boris Cherny, the creator of Claude Code at Anthropic, just explained why most people aren't getting real results from Claude in this talk he breaks down exactly how most people skipped the setup entirely: - 90% of code at Anthropic is written by Claude itself - the 14% you lose to CLAUDE.md before typing a word - lawyers, designers, and finance people are building real things with it - no CS degree. no background. nothing Boris Cherny: "Claude Code is 100% written by Claude Code, Cowork is 100% written by Claude Code" if you've been using Claude for months and never configured a single thing, you skipped the 20 steps that change everything. probably 25 instead of another show tonight, watch this make sure to bookmark it before it gets lost in your feed my breakdown of all 25 features is below

Khairallah AL-Awady

182,466 views • 2 months ago

Claude Code is now included in the Claude Pro plan which means Pro plan subscribers can use their rate limits for Claude apps and Claude Code! To celebrate, here's a conversation with Claude Code's founding engineer, Boris Cherny, on: - how we use Claude Code at Anthropic - underrated tips for using it effectively - the future of coding tools - and more!

Claude Code is now included in the Claude Pro plan which means Pro plan subscribers can use their rate limits for Claude apps and Claude Code! To celebrate, here's a conversation with Claude Code's founding engineer, Boris Cherny, on: - how we use Claude Code at Anthropic - underrated tips for using it effectively - the future of coding tools - and more!

Alex Albert

123,756 views • 1 year ago

Creator of Claude Code: “80% of our engineers are using self‑improving loops. Now everyone is building agentic Graphs" in 3-6 months, we’ll all be building graphs to orchestrate self‑improving agents. No more prompting.” In a 40-minute podcast, Boris Cherny reveals the future of agentic coding with Claude at AMD. Worth more than a $500 agentic course. Watch this video, then read the article below on how to become a graph architect.

Creator of Claude Code: “80% of our engineers are using self‑improving loops. Now everyone is building agentic Graphs" in 3-6 months, we’ll all be building graphs to orchestrate self‑improving agents. No more prompting.” In a 40-minute podcast, Boris Cherny reveals the future of agentic coding with Claude at AMD. Worth more than a $500 agentic course. Watch this video, then read the article below on how to become a graph architect.

Movez

153,534 views • 9 days ago

Boris Cherny, Head of Claude Code at Anthropic: "I do not prompt Claude anymore. I have loops running that prompt Claude. My job is to write loops." The person who built the most used AI coding tool stopped prompting entirely. Most people using it every day are still typing one request at a time. This Github repo changes that. ↳ Seven production loop patterns with real token cost estimates ↳ CLI that scaffolds your entire loop in five minutes ↳ Starters for Grok, Claude Code, Codex, and Opencode The repo gives you the framework. My article covers the mental shift that makes it actually work.

Boris Cherny, Head of Claude Code at Anthropic: "I do not prompt Claude anymore. I have loops running that prompt Claude. My job is to write loops." The person who built the most used AI coding tool stopped prompting entirely. Most people using it every day are still typing one request at a time. This Github repo changes that. ↳ Seven production loop patterns with real token cost estimates ↳ CLI that scaffolds your entire loop in five minutes ↳ Starters for Grok, Claude Code, Codex, and Opencode The repo gives you the framework. My article covers the mental shift that makes it actually work.

Kanika

20,148 views • 13 days ago

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 • 7 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 📧

57,568 views • 9 months ago

Boris Cherny, the creator of Claude Code at Anthropic, just explained why he stopped prompting Claude entirely in this talk he breaks down exactly how the future is teams of agents, not better prompts: - the 14% you lose to CLAUDE.md before typing a word - the features that change how Claude thinks before you type a word - the features most Claude users don't know exist - why typing prompts one at a time is already the slow lane Boris Cherny: "Now I don’t prompt Claude anymore - I have loops that are running. My job is to write loops." if you've been using Claude for more than a month and never left the chat window, you have at least 23 untouched features. probably 25 instead of another show tonight, watch this make sure to bookmark it before it gets lost in your feed my breakdown of all 25 features is below

Boris Cherny, the creator of Claude Code at Anthropic, just explained why he stopped prompting Claude entirely in this talk he breaks down exactly how the future is teams of agents, not better prompts: - the 14% you lose to CLAUDE.md before typing a word - the features that change how Claude thinks before you type a word - the features most Claude users don't know exist - why typing prompts one at a time is already the slow lane Boris Cherny: "Now I don’t prompt Claude anymore - I have loops that are running. My job is to write loops." if you've been using Claude for more than a month and never left the chat window, you have at least 23 untouched features. probably 25 instead of another show tonight, watch this make sure to bookmark it before it gets lost in your feed my breakdown of all 25 features is below

Khairallah AL-Awady

103,005 views • 2 months ago

ex-Anthropic engineer: "I left Anthropic to build agents systems in Google but nothing beats Claude as an agent yet - in coding and tool use, the rest are still behind " in this 90-min podcast, he showed how to build effective agent system with Claude from scratch to get into Anthropic, he hand-coded Karpathy's nanoGPT as a physicist Claude → tools → loops of verification → a real agent and why, at Google, he says Claude is the best watch & bookmark - then read the guide to agent systems ↓

ex-Anthropic engineer: "I left Anthropic to build agents systems in Google but nothing beats Claude as an agent yet - in coding and tool use, the rest are still behind " in this 90-min podcast, he showed how to build effective agent system with Claude from scratch to get into Anthropic, he hand-coded Karpathy's nanoGPT as a physicist Claude → tools → loops of verification → a real agent and why, at Google, he says Claude is the best watch & bookmark - then read the guide to agent systems ↓

codila

126,242 views • 18 days ago

Dario Amodei says AI products start to saturate when the models become too capable Chatbots will remain useful, but the real gains from smarter models are now showing up more clearly in coding tools and agentic systems "in this industry, there's no such thing as a stable product"

Dario Amodei says AI products start to saturate when the models become too capable Chatbots will remain useful, but the real gains from smarter models are now showing up more clearly in coding tools and agentic systems "in this industry, there's no such thing as a stable product"

Haider.

33,497 views • 3 months ago

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 • 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 The full episode will drop next week on the following platforms, subscribe if you don't want to miss it: Youtube - Spotify - Apple Podcasts -

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 • 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 The full episode will drop next week on the following platforms, subscribe if you don't want to miss it: Youtube - Spotify - Apple Podcasts -

Ryan Peterman

72,222 views • 7 months ago

Dylan Borland: "There's a reason why all of this is unfolding, there's a reason why all of this is starting to come out, there's a reason you see an internal struggle with DoW, DoD and the IC... you don't begin to get into fighting matches internally with money and contracts unless something is going on." And the "this" that Dylan is alluding to is in reference to the future UFO/other event that Lue Elizondo (as recently as last Thursday) has been asked about again and again. Interesting words from Dylan.

Dylan Borland: "There's a reason why all of this is unfolding, there's a reason why all of this is starting to come out, there's a reason you see an internal struggle with DoW, DoD and the IC... you don't begin to get into fighting matches internally with money and contracts unless something is going on." And the "this" that Dylan is alluding to is in reference to the future UFO/other event that Lue Elizondo (as recently as last Thursday) has been asked about again and again. Interesting words from Dylan.

UAP Juan

65,134 views • 1 month ago