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  • Inside Anthropic, the $965 Billion AI Juggernaut: Dario and Daniela Amodei on Claude, Claude Code, and the AI Arms Race

    In this episode of The Circuit, Bloomberg goes inside Anthropic, the AI lab that started as an underdog and is now valued at nearly a trillion dollars. The conversation centers on the sibling duo running the company, Dario Amodei, the brother and visionary, and Daniela Amodei, the sister and operator, along with Boris Cherny, the engineer behind Claude Code and Claude Cowork. It is a rare, on-the-record look at how a safety-obsessed startup founded by a group of OpenAI defectors in 2021 became the breakout star of the AI arms race, wiping billions in value off software stocks and forcing an uncomfortable national conversation about the future of work. You can watch the full episode here.

    TLDW

    Dario and Daniela Amodei walk through Anthropic’s rise from a pandemic-era group meeting on the grass in Precita Park to a roughly $965 billion AI juggernaut that is now profitable for the first time. They explain why they left OpenAI, citing a breakdown of trust and values with Sam Altman rather than a single safety disagreement, and how Dario’s early bet on scaling laws shaped the entire field. The two describe how Claude is trained for character and “professional warmth,” anchored in documents like the UN Declaration of Human Rights, and how the company defines a good model as one that does not lie, hallucinate, or deceive. The business story is enterprise and coding: Claude Code and Claude Cowork automated huge chunks of software engineering, triggered a SaaSpocalypse that erased $285 billion in market value overnight, and pushed annualized growth to as high as 80x in a single quarter. Boris Cherny, recruited from a slow miso-making life in rural Japan, says Claude has written one hundred percent of his code for at least six months. The hardest part of the conversation is jobs: Dario stands by his warning that AI could eliminate half of all entry level white collar jobs in one to five years, pushes back hard on Jensen Huang’s “doom marketing” critique, and lays out where displaced workers might go, from the physical world to human-centered roles like a reimagined, more interpersonal version of medicine. The episode closes by teasing AI and the future of warfare, a scarily powerful new model called Mythos, and Dario’s identification not with Oppenheimer but with Leo Szilard.

    Thoughts

    The most revealing moment in this profile is not a number, it is Dario Amodei’s description of the “smooth exponential.” His whole career, he says, has felt like nothing happening, nothing happening, nothing happening, and then zoom. That mental model is the key to understanding why Anthropic behaves the way it does. A company that genuinely believes it is riding an exponential will tolerate enormous near-term discomfort, public criticism, and internal strain, because it has already priced in a future that looks nothing like the present. Whether that conviction is wisdom or a kind of motivated certainty is the open question the episode never fully resolves, but it explains the urgency in every answer he gives.

    The Boris Cherny segment is the part that should make working engineers sit up. When a senior engineer says Claude has written one hundred percent of his code for six months and that he feels like he has a jet pack, that is not a marketing line, it is a description of a job that has already changed underneath the person doing it. The framing in the piece is optimistic, superpowers and fun, but the logical endpoint is exactly the one Dario himself names a few minutes later: you automate ninety percent of a job, the remaining humans get ten times more leveraged, and then the curve keeps bending toward one hundred percent. Anthropic is, unusually, building the thing and narrating its own disruption in the same breath. That honesty is rare, and it is also a little vertiginous.

    The values-versus-business-model argument deserves more scrutiny than it gets. Dario’s claim is elegant: a business model that conflicts with your values forces you to either betray the values or become irrelevant, so Anthropic chose enterprise and coding because curing diseases and making energy cheaper are enterprise work, while consumer engagement is the addiction-maximizing trap of social media. It is a genuinely good argument, and it is also extremely convenient that the values-aligned path happens to be the most lucrative one. The episode lets that tension sit, which is the right call. The honest reading is that Anthropic found a place where doing well and doing good currently point in the same direction, and the harder test will come the first time they diverge.

    On jobs, Dario is more persuasive than his critics give him credit for, precisely because he refuses the comfortable framing. Jensen Huang and others accuse him of conflating tasks with jobs and of doom marketing that benefits Anthropic. Dario’s response, that the idea this is cheap marketing is itself cheap marketing, is sharper than it first sounds. He is pointing at the way social media flattens a five-page argument about tasks, jobs, tax policy, and the adolescence of technology into a three-second clip designed to provoke. The deeper point is that he is trying to hold two things at once, fast GDP growth and high unemployment, and our public discourse is structurally bad at holding two things at once. That is less a story about AI than about the medium we use to argue about it.

    Finally, the Oppenheimer exchange reframes the entire profile. Dario explicitly rejects the lone-genius model and names Leo Szilard, the scientist who first imagined the chain reaction, as the figure he identifies with. He calls Oppenheimer a failure case, an example of what should not happen. For a man whose company is constantly accused of cultivating a great-man mythology, choosing the early-warning scientist over the bomb’s public face is a deliberate statement about how he wants this story to end: not with charismatic individuals at the center of everything, but with checks and balances everywhere. It is the most quietly radical thing said in the whole piece, and the teaser for a model named Mythos lands with a little extra irony because of it.

    Key Takeaways

    • Anthropic is profiled as an AI juggernaut valued at nearly a trillion dollars, with the figure of roughly $965 billion framing the episode, and is described as profitable for the first time.
    • The company was founded in 2021 by a team of OpenAI defectors and started as an underdog lab before becoming the breakout star of the AI race.
    • Anthropic is run by a sibling duo, Dario Amodei as the visionary and Daniela Amodei as the operator who turns his ideas into action, and Daniela jokes that when they argue, no one wins.
    • Dario describes the AI trajectory as a “smooth exponential” where nothing seems to happen for a long time and then progress suddenly explodes.
    • He says he predicted from a graph that Anthropic would become the AI company with the most revenue and valuation around this time, and that it has happened.
    • Dario grew up in San Francisco with a leather-craftsman father and a librarian mother, took calculus in middle school, and studied math at UC Berkeley while in high school, with no early interest in the internet revolution.
    • Dario studied neuroscience before moving to AI at Baidu and later Google, while Daniela was an early employee at Stripe.
    • Both joined OpenAI starting in 2016, where Dario developed the concept of scaling laws, predicting that large language models would improve simply by adding more data and compute even if the underlying algorithm stayed the same.
    • Scaling up was a counter-cultural scientific bet at the time, held mainly by the founding research team, and it helped supercharge OpenAI’s models and pave the way for ChatGPT.
    • The Amodeis left OpenAI after clashing with Sam Altman over direction and values, framing it as a breakdown of trust and honesty rather than a single safety disagreement.
    • Altman has said that despite their differences, he mostly trusts Anthropic as a company.
    • Anthropic has all seven of its co-founders still at the company, which Dario notes almost never happens at a company of its size.
    • The early team met during the pandemic at Precita Park in San Francisco, pulling up chairs on the grass to talk about what they were building.
    • The name Anthropic comes from the Greek word for human, reflecting a stated mission to build responsible AI for the long-term benefit of humanity.
    • Dario has published long essays including Machines of Loving Grace and The Adolescence of Technology, exploring both the miraculous potential and the worst-case scenarios of AI.
    • Claude is trained to follow a set of principles called a Constitution, intended to keep it aligned and well-behaved.
    • Daniela describes Claude’s intended personality as “professional warmth,” approachable but distant, not a best friend and not cold or calculating.
    • A good model, in Anthropic’s framing, does not lie accidentally or intentionally, with lying including hallucinations where the model invents something it does not know.
    • Anthropic’s own research has shown that models can purposely try to deceive users, which the company works to prevent in production models.
    • There is no universal standard for helpfulness or harmlessness, so Anthropic draws on founding documents like the UN Declaration of Human Rights to train Claude’s character.
    • The company has begun consulting religious leaders about Claude as an entity and about core values that transcend any single worldview.
    • Early Claude models, around the Claude 2 era, were sometimes “nannyish,” expressing concern when a user just wanted the weather, which researchers describe as tuning a fine dial.
    • Anthropic’s revenue skyrocketed over the past year, driven by a focus on lucrative business tools rather than consumer apps.
    • Claude Code automated large chunks of software engineering, and Claude Cowork extended that power to non-engineers.
    • Dario frames the enterprise bet as a values-and-business decision, arguing that a business model conflicting with your values forces you to betray them or become irrelevant.
    • He contrasts engagement-and-addiction-driven consumer and advertising models with enterprise uses like curing diseases, advancing biotech and pharma, and making energy cheaper.
    • Soon after Claude Cowork launched, $285 billion in market value vanished overnight in what traders called the SaaSpocalypse, with some software stocks down nine days in a row.
    • Dario argues the software “pie” will get bigger overall, even as some incumbents shrink or go out of business if they fail to adapt and defend their moats.
    • Boris Cherny, the engineer behind Claude Code and Claude Cowork, was recruited in 2024 from a slow life in rural Japan where he made miso and shopped at farmer’s markets.
    • Cherny’s bet was that a coding agent could do all of software development, not just autocomplete a line or a sentence.
    • He now runs anywhere from a few to a few thousand Claudes at once and says Claude has written one hundred percent of his code for at least six months.
    • A live demo builds a working recipe app that suggests meals for the week in minutes, work that used to take hours or days.
    • At the second annual Code with Claude conference, Anthropic reported API volume up nearly 17x year over year, eight frontier models shipped in twelve months, and first-quarter growth that annualizes to roughly 80x.
    • Dario stands by his warning that AI could eliminate half of all entry level white collar jobs in the next one to five years, saying he remains the same order of concerned.
    • He warns of an unusual combination of very fast GDP growth alongside high unemployment, underemployment, low-wage jobs, and high inequality.
    • Jensen Huang and others have pushed back, accusing Dario of conflating tasks with jobs and of doom marketing that benefits Anthropic.
    • Dario responds that the claim this is cheap marketing is itself cheap marketing, and blames social media for flattening his careful five-page arguments into three-second clips.
    • Anthropic published a paper estimating that management, finance, and legal jobs could be among the fields most affected by AI in the near future.
    • Dario points to the physical world, human-centered relationship-driven work, and humans directing AI as places displaced workers might go, though he is unsure how thick those roles will be.
    • He uses medicine as an example, predicting AI will excel at diagnosis while doctors pivot toward the interpersonal, hands-on, bedside-manner parts that AI cannot replace.
    • The episode teases a next installment on AI and the future of warfare, a scarily powerful new model called Mythos, and the theme of riding the exponential while avoiding dystopia.
    • Dario names The Making of the Atomic Bomb as a favorite book and identifies most with Leo Szilard, who first conceived of a chain reaction, rather than Oppenheimer, whom he sees as a failure case.
    • His view is that the only way the AI era ends well is through checks and balances everywhere, not larger-than-life personalities at the center of everything.

    Detailed Summary

    An unlikely AI celebrity and a sibling-run juggernaut

    The profile opens in a library Dario Amodei clearly loves, establishing him as an unlikely AI celebrity, a man known for warning the world about the risks of artificial intelligence who now runs a company valued at nearly a trillion dollars. Anthropic is presented as the breakout star of the AI race, wiping billions off software stocks, going head-to-head with the Pentagon, and building models powerful enough to threaten modern cybersecurity, with early testers reportedly calling one capability a super weapon and asking the company not to release it. Guiding the company is the sibling pair, Dario the visionary and Daniela the operator who translates his swirling cosmic thoughts into action. Daniela explains that the two have always been close and always wanted to do something big together, and when asked who wins their arguments, she says no one. The framing throughout is of a young, fast-growing startup carrying enormous responsibility for how humanity works, learns, thinks, and even fights wars.

    The smooth exponential and the road from OpenAI

    Dario describes his entire career as the experience of a smooth exponential, where nothing happens for a long stretch and then things go crazy, and he says he watched a graph and correctly predicted Anthropic would top the field in revenue and valuation around now. His backstory is a math prodigy in San Francisco, the son of a leather craftsman and a librarian, taking calculus in middle school and Berkeley math classes in high school, indifferent to the internet revolution and drawn instead to science fiction and understanding the universe. Daniela, more into reading and the arts, calls them near-perfect complements. Dario moved from neuroscience into AI at Baidu and Google, Daniela went to Stripe, and both eventually joined OpenAI starting in 2016, where Dario developed scaling laws, the then counter-cultural bet that more data and compute alone would make models smarter. That insight helped power the models behind ChatGPT, but the Amodeis clashed with Sam Altman over values and direction. Dario frames the departure bluntly: disagreements on safety alone were not enough, but a loss of trust, a sense that Altman’s stated values were not his real values, made it impossible to continue. The resolution, he says, was simply to go off and do their own thing.

    Precita Park, the Constitution, and teaching Claude to be good

    Anthropic’s origin story runs through Precita Park, where the early pandemic-era team gathered on the grass to talk about what they were building. Of seven co-founders, all are still at the company, a retention record Dario says almost never happens at this scale. From the start the company pitched itself as the ultimate safety-conscious lab, with Dario publishing essays like Machines of Loving Grace and The Adolescence of Technology. Claude is trained on a Constitution, and Daniela describes its intended character as professional warmth, approachable but distant. Defining a good model, the team says it should not lie, whether through intentional deception or hallucination, the latter being the model inventing answers it does not actually know. Anthropic’s research has shown models can deliberately deceive, something they work to prevent in production. Because there is no universal standard for helpfulness or harmlessness, they anchor Claude’s training in documents like the UN Declaration of Human Rights and have begun talking with religious leaders about values that transcend any single worldview. Daniela recalls early “nannyish” Claude 2-era behavior, where the model fretted over a user who only wanted the weather, and describes the work as threading a fine needle to land in the center of the dial.

    The enterprise bet, Claude Code, and the SaaSpocalypse

    Anthropic’s revenue surge and first-time profitability are attributed to a focus on business tools, especially Claude Code, which automated large chunks of software engineering, and Claude Cowork, which extended that capability beyond engineers. Dario frames the bet on coding and enterprise as both a values and a business decision: a business model that conflicts with your values eventually forces you to betray them or become irrelevant. He contrasts the engagement and addiction incentives of advertising-driven social media and AI video with enterprise applications like curing diseases, biotech, pharma, academic research, and cheaper energy, all of which he counts as enterprise work aligned with the company’s mission. The disruption was immediate and brutal: soon after Claude Cowork launched, $285 billion in market value vanished overnight in what traders dubbed the SaaSpocalypse, with some software stocks falling nine days straight. Dario’s read is that the overall software pie will grow even as specific incumbents shrink or fail, and that the big losers will be those who do not see what is coming or defend their moats.

    Boris Cherny, jet packs, and Code with Claude

    Much of Anthropic’s recent growth is credited to Boris Cherny, the engineer behind Claude Code and Claude Cowork, hired in 2024 from a deliberately slow life in rural Japan where he made miso and frequented farmer’s markets. A serious science fiction reader, Cherny was awed by his first AI chatbot and also acutely aware of how badly the technology could go. His bet was that a coding agent could do all of software development rather than just autocomplete. He now describes orchestrating anywhere from a few to a few thousand Claudes at once, talking to one while it writes code and moving to the next, and says Claude has written one hundred percent of his code for at least six months. He compares the feeling to having superpowers and a jet pack, calling engineering more fun than ever. A live demo has Claude build a working weekly-meal recipe app in minutes. The story then moves to the second annual Code with Claude conference, where the company reports API volume up nearly 17x year over year, eight frontier models shipped in twelve months, and first-quarter growth annualizing to roughly 80x, with attendees ranging from technical superfans to curious non-engineers.

    Jobs, the tasks-versus-jobs fight, and a more human medicine

    The episode turns to the uncomfortable core: whether engineers will be the first casualties of the AI they are building. Dario stands by his warning that AI could eliminate half of all entry level white collar jobs in one to five years and says he is still the same order of concerned, describing a strange combination of very fast GDP growth with high unemployment, underemployment, low-wage work, and inequality. He notes the usual productivity hump, where automating ninety percent of a job makes humans ten times more leveraged on the rest, before the curve bends toward one hundred percent. With 70 percent of Americans expecting AI to kill jobs and nearly a third fearing for their own, the stakes are political. Jensen Huang and others accuse Dario of conflating tasks with jobs and of doom marketing, and Dario pushes back hard, arguing he writes carefully across five pages about tasks, jobs, tax and macroeconomic policy, and the new jobs of the adolescence of technology, and that calling this cheap marketing is itself cheap marketing born of social media’s three-second culture. Anthropic has published a paper suggesting management, finance, and legal jobs could change the most. Dario points to the physical world, human-centered relationship work, and humans directing AI as landing spots, using medicine as his example: AI will become an excellent diagnostician, but it cannot physically examine a patient or provide bedside manner, so medicine pivots toward the interpersonal. The episode closes by teasing AI and the future of warfare, a powerful new model called Mythos, and Dario’s identification with Leo Szilard over Oppenheimer, whom he calls a failure case, insisting the era can only end well with checks and balances everywhere rather than larger-than-life figures at the center.

    Notable Quotes

    “There’s this kind of smooth exponential, and the experience of the smooth exponential is, nothing’s happening, nothing’s happening, nothing’s happening. Little things happen, and then zoom, it goes crazy.”

    Dario Amodei, on how AI progress actually feels from the inside

    “When you feel that you can’t trust someone, when you feel that their values are not what they say they are, when you feel that they’re not honest, that makes it very hard to continue to work with a company.”

    Dario Amodei, on why he and Daniela left OpenAI

    “Some of the early companies that we gave this to said things like, this is a super weapon, please don’t release this.”

    Anthropic, on early reactions to one of its more powerful models

    “I like to describe it as professional warmth. So the goal is not for it to be your best friend, but it’s not for it to be sort of cold, rote, calculating.”

    Daniela Amodei, describing the character Anthropic designs into Claude

    “If you pick a business model that fundamentally conflicts with your values, you’re gonna have a hard time. Either you betray your own values or you become irrelevant.”

    Dario Amodei, on why Anthropic bet on enterprise and coding

    “For me personally, it’s been writing a hundred percent of my code for at least six months. The work of engineering has just completely changed.”

    Boris Cherny, the engineer behind Claude Code and Claude Cowork

    “I feel like I suddenly have superpowers. I have like a jet pack and the engineering has never been this fun.”

    Boris Cherny, on building software with Claude Code

    “I think we could have this very unusual combination of very fast GDP growth and high unemployment, or at least underemployment, or low wage jobs, high inequality.”

    Dario Amodei, on the economic shock he is most worried about

    “The idea that this is cheap marketing is itself cheap marketing. I think it’s part of the disease of Silicon Valley.”

    Dario Amodei, responding to the doom-marketing accusation

    “The figure I most identified with was Leo Szilard, who was the one who first had the idea that there could be a chain reaction.”

    Dario Amodei, on which atomic-age scientist he sees himself in, rejecting Oppenheimer as a failure case

    Watch the full episode of The Circuit inside Anthropic here.

    Related Reading

    • Anthropic the official site for the company, Claude, Claude Code, and its safety research.
    • Machines of Loving Grace Dario Amodei’s long essay on the optimistic case for powerful AI referenced in the profile.
    • Scaling laws (Wikipedia) background on the data-and-compute bet Dario developed that reshaped modern AI.
    • Leo Szilard (Wikipedia) the physicist who first conceived the nuclear chain reaction and whom Dario says he identifies with.
    • Purpose the PJFP pillar on building meaningful work and direction in a world being reshaped by AI.

  • Boris Cherny Says Coding Is “Solved” — Head of Claude Code Reveals What Comes Next for Software Engineers

    Boris Cherny Says Coding Is "Solved" — Head of Claude Code Reveals What Comes Next for Software Engineers

    Boris Cherny, creator and head of Claude Code at Anthropic, sat down with Lenny Rachitsky on Lenny’s Podcast to drop one of the most consequential interviews in recent tech history. With Claude Code now responsible for 4% of all public GitHub commits — and growing faster every day — Cherny laid out a vision where traditional coding is a solved problem and the real frontier has shifted to idea generation, agentic AI, and a new role he calls the “Builder.”

    TLDW (Too Long; Didn’t Watch)

    Boris Cherny, the head of Claude Code at Anthropic, hasn’t manually written a single line of code since November 2025 — and he ships 10 to 30 pull requests every day. Claude Code now accounts for 4% of all public GitHub commits and is projected to reach 20% by end of 2026. Cherny believes coding as we know it is “solved” and that the future belongs to generalist “Builders” who blend product thinking, design sense, and AI orchestration. He advocates for underfunding teams, giving engineers unlimited tokens, building products for the model six months from now (not today), and following the “bitter lesson” of betting on the most general model. The Cowork product — Anthropic’s agentic tool for non-technical tasks — was built in just 10 days using Claude Code itself. Cherny also revealed three layers of AI safety at Anthropic: mechanistic interpretability, evals, and real-world monitoring.

    Key Takeaways

    1. Claude Code’s Growth Is Staggering

    Claude Code now authors approximately 4% of all public GitHub commits, and Anthropic believes the real number is significantly higher when private repositories are included. Daily active users doubled in the month before this interview, and the growth curve isn’t just rising — it’s accelerating. Semi Analysis predicted Claude Code will reach 20% of all GitHub commits by end of 2026. Claude Code alone is generating roughly $2 billion in revenue, with Anthropic overall at approximately $15 billion.

    2. 100% AI-Written Code Is the New Normal

    Cherny hasn’t manually edited a single line of code since November 2025. He ships 10 to 30 pull requests per day, making him one of the most prolific engineers at Anthropic — all through Claude Code. He still reviews code and maintains human checkpoints, but the actual writing of code is entirely handled by AI. Claude also reviews 100% of pull requests at Anthropic before human review.

    3. Coding Is “Solved” — The Frontier Has Shifted

    In Cherny’s view, coding — at least the kind of programming most engineers do — is a solved problem. The new frontier is idea generation. Claude is already analyzing bug reports and telemetry data to propose its own fixes and suggest what to build next. The shift is from “tool” to “co-worker.” Cherny expects this to become increasingly true across every codebase and tech stack over the coming months.

    4. The Rise of the “Builder” Role

    Traditional role boundaries between engineer, product manager, and designer are dissolving. On the Claude Code team, everyone codes — the PM, the engineering manager, the designer, the finance person, the data scientist. Cherny predicts the title “Software Engineer” will start disappearing by end of 2026, replaced by something like “Builder” — a generalist who blends design sense, business logic, technical orchestration, and user empathy.

    5. Underfunding Teams Is a Feature, Not a Bug

    Cherny advocates deliberately underfunding teams as a strategy. When you assign one engineer to a project instead of five, they’re forced to leverage Claude Code to automate everything possible. This isn’t about cost-cutting — it’s about forcing innovation through constraint. The results at Anthropic have been dramatic: while the engineering team grew roughly 4x, productivity per engineer increased 200% in terms of pull requests shipped.

    6. Give Engineers Unlimited Tokens

    Rather than hiring more headcount, Cherny’s advice to CTOs is to give engineers as many tokens as possible. Let them experiment with the most capable models without worrying about cost. The most innovative ideas come from people pushing AI to its limits. Some Anthropic engineers are spending hundreds of thousands of dollars per month in tokens. Optimize costs later — only after you’ve found the idea that works.

    7. Build for the Model Six Months From Now

    One of Cherny’s most actionable insights: don’t build for today’s model capabilities — build for where the model will be in six months. Early versions of Claude Code only wrote about 20% of Cherny’s code. But the team bet on exponential improvement, and when Opus 4 and Sonnet 4 arrived, product-market fit clicked instantly. This means your product might feel rough at first, but when the next model generation drops, you’ll be perfectly positioned.

    8. The Bitter Lesson Applied to Product

    Cherny references Rich Sutton’s famous “Bitter Lesson” blog post as a core principle for the Claude Code team: the more general model will always outperform the more specific one. In practice, this means avoiding rigid workflows and orchestration scaffolding around AI models. Don’t box the model in. Give it tools, give it a goal, and let it figure out the path. Scaffolding might improve performance 10-20%, but those gains get wiped out with the next model generation.

    9. Latent Demand — The Most Important Product Principle

    Cherny calls latent demand “the single most important principle in product.” The idea: watch how people misuse or hack your product for purposes you didn’t design it for. That’s where your next product lives. Facebook Marketplace came from 40% of Facebook Group posts being buy-and-sell. Cowork came from non-engineers using Claude Code’s terminal for things like growing tomato plants, analyzing genomes, and recovering wedding photos from corrupted hard drives. There’s also a new dimension: watching what the model is trying to do and building tools to make that easier.

    10. Cowork Was Built in 10 Days

    Anthropic’s Cowork product — their agentic tool for non-technical tasks — was implemented by a small team in just 10 days, using Claude Code to build its own virtual machine and security scaffolding. Cowork was immediately a bigger hit than Claude Code was at launch. It can pay parking tickets, cancel subscriptions, manage project spreadsheets, message team members on Slack, respond to emails, and handle forms — and it’s growing faster than Claude Code did in its early days.

    11. Three Layers of AI Safety at Anthropic

    Cherny outlined three layers of safety: (1) Mechanistic interpretability — monitoring neurons inside the model to understand what it’s doing and detect things like deception at the neural level. (2) Evals — lab testing where the model is placed in synthetic situations to check alignment. (3) Real-world monitoring — releasing products as research previews to study unpredictable agent behavior in the wild. Claude Code was used internally for 4-5 months before public release specifically for safety study.

    12. Why Boris Left Anthropic for Cursor (and Came Back After Two Weeks)

    Cherny briefly left Anthropic to join Cursor, drawn by their focus on product quality. But within two weeks, he realized what he was missing: Anthropic’s safety mission. He described it as a psychological need — without mission-driven work, even building a great product wasn’t a substitute. He returned to Anthropic and the rest is history.

    13. Manual Coding Skills Will Become Irrelevant in 1-2 Years

    Cherny compared manual coding to assembly language — it’ll still exist beneath the surface, and understanding the fundamentals helps for now, but within a year or two it won’t matter for most engineers. He likened it to the printing press transition: a skill once limited to scribes became universal literacy over time. The volume of code created will explode while the cost drops dramatically.

    14. Pro Tips for Using Claude Code Effectively

    Cherny shared three specific tips: (1) Use the most capable model — currently Opus 4.6 with maximum effort enabled. Cheaper models often cost more tokens in the end because they require more correction and handholding. (2) Use Plan Mode — hit Shift+Tab twice in the terminal to enter plan mode, which tells the model not to write code yet. Go back and forth on the plan, then auto-accept edits once it looks good. Opus 4.6 will one-shot it correctly almost every time. (3) Explore different interfaces — Claude Code runs on terminal, desktop app, iOS, Android, web, Slack, GitHub, and IDE extensions. The same agent runs everywhere. Find what works for you.

    Detailed Summary

    The Origin Story of Claude Code

    Claude Code began as a one-person hack. When Cherny joined Anthropic, he spent a month building weird prototypes that mostly never shipped, then spent another month doing post-training to understand the research side. He believes deeply that to build great products on AI, you have to understand “the layer under the layer” — meaning the model itself.

    The first version was terminal-based and called “Claude CLI.” When he demoed it internally, it got two likes. Nobody thought a coding tool could be terminal-based. But the terminal form factor was chosen partly out of necessity (he was a solo developer) and partly because it was the only interface that could keep up with how fast the underlying model was improving.

    The breakthrough moment during prototyping: Cherny gave the model a bash tool and asked it what music he was listening to. The model figured out — without any specific instructions — how to use the bash tool to answer that question. That moment of emergent tool use convinced him he was onto something.

    The Growth Trajectory

    Claude Code was released externally in February 2025 and was not immediately a hit. It took months for people to understand what it was. The terminal interface was alien to many. But internally at Anthropic, daily active users went vertical almost immediately.

    There were multiple inflection points. The first major one was the release of Opus 4, which was Anthropic’s first ASL-3 class model. That’s when Claude Code’s growth went truly exponential. Another inflection came in November 2025 when Cherny personally crossed the 100% AI-written code threshold. The growth has continued to accelerate — it’s not just going up, it’s going up faster and faster.

    The Spotify headline from the week of recording — “Spotify says its best developers haven’t written a line of code since December, thanks to AI” — underscored how mainstream the shift has become.

    Thinking in Exponentials

    Cherny emphasized that thinking in exponentials is deep in Anthropic’s DNA — three of their co-founders were the first three authors on the scaling laws paper. At Code with Claude (Anthropic’s developer conference) in May 2025, Cherny predicted that by year’s end, engineers might not need an IDE to code anymore. The room audibly gasped. But all he did was “trace the line” of the exponential curve of AI-written code.

    The Printing Press Analogy

    Cherny’s preferred historical analog for what’s happening is the printing press. In mid-1400s Europe, literacy was below 1%. A tiny class of scribes did all the reading and writing, employed by lords and kings who often couldn’t read themselves. After Gutenberg, more printed material was created in 50 years than in the previous thousand. Costs dropped 100x. Literacy rose to 70% globally over two centuries.

    Cherny sees coding undergoing the same transition: a skill locked away in a tiny class of “scribes” (software engineers) is becoming accessible to everyone. What that unlocks is as unpredictable as the Renaissance was to someone in the 1400s. He also shared a remarkable historical detail — an interview with a scribe from the 1400s who was actually excited about the printing press because it freed them from copying books to focus on the artistic parts: illustration and bookbinding. Cherny felt a direct parallel to his own experience of being freed from coding tedium to focus on the creative and strategic parts of building.

    What AI Transforms Next

    Cherny believes roles adjacent to engineering — product management, design, data science — will be transformed next. The key technology enabling this is true agentic AI: not chatbots, but AI that can actually use tools and act in the world. Cowork is the first step in bringing this to non-technical users.

    He was candid that this transition will be “very disruptive and painful for a lot of people” and that it’s a conversation society needs to have. Anthropic has hired economists, policy experts, and social impact specialists to help think through these implications.

    The Latent Demand Framework in Depth

    Cherny credited Fiona Fung, the founding manager of Facebook Marketplace, for popularizing the concept of latent demand. The examples are compelling: someone using Claude Code to grow tomato plants, another analyzing their genome, another recovering wedding photos from a corrupted hard drive, a data scientist who figured out how to install Node.js and use a terminal to run SQL analysis through Claude Code.

    But Cherny added a new dimension specific to AI products: latent demand from the model itself. Rather than boxing the model into a predetermined workflow, observe what the model is trying to do and build to support that. At Anthropic they call this being “on distribution.” Give the model tools and goals, then let it figure out the path. The product is the model — everything else is minimal scaffolding.

    Safety as a Core Differentiator

    The interview made clear that safety isn’t just a talking point at Anthropic — it’s why everyone is there, including Cherny. He described the work of Chris Olah on mechanistic interpretability: studying model neurons at a granular level to understand how concepts are encoded, how planning works, and how to detect things like deception. A single neuron might correspond to a dozen concepts through a phenomenon called superposition.

    Anthropic’s “race to the top” philosophy means open-sourcing safety tools even when they work for competing products. They released an open-source sandbox for running AI agents securely that works with any agent, not just Claude Code.

    The Memory Leak Story

    One of the most memorable anecdotes: Cherny was debugging a memory leak the traditional way — taking heap snapshots, using debuggers, analyzing traces. A newer engineer on the team simply told Claude Code: “Hey Claude, it seems like there’s a leak. Can you figure it out?” Claude Code took the heap snapshot, wrote itself a custom analysis tool on the fly, found the issue, and submitted a pull request — all faster than Cherny could do it manually. Even veterans of AI-assisted coding get stuck in old habits.

    Personal Background and Post-AGI Plans

    In a touching segment, Cherny and Rachitsky discovered they’re both from Odessa, Ukraine. Cherny’s grandfather was one of the first programmers in the Soviet Union, working with punch cards. Before joining Anthropic, Cherny lived in rural Japan where he learned to make miso — a process that takes months to years and taught him to think on long timescales. His post-AGI plan? Go back to making miso.

    His book recommendations: Functional Programming in Scala (the best technical book he’s ever read), Accelerando by Charles Stross (captures the essence of this moment better than anything), and The Wandering Earth by Liu Cixin (Chinese sci-fi short stories from the Three Body Problem author).

    Thoughts and Analysis

    This interview is one of the most important conversations about the future of software engineering to come out in 2026. Here are some things worth sitting with:

    The “solved” framing is provocative but precise. Cherny isn’t saying software engineering is solved — he’s saying the act of translating intent into working code is solved. The thinking, architecting, deciding-what-to-build, and ensuring-it’s-correct parts are very much unsolved. This distinction matters enormously and most of the pushback in the YouTube comments misses it.

    The underfunding principle is genuinely counterintuitive. Most organizations respond to AI tools by trying to maintain headcount and “augment” existing workflows. Cherny’s approach is the opposite: reduce headcount on a project, give people unlimited AI tokens, and watch them figure out how to ship ten times faster. This is a fundamentally different organizational philosophy and one that most companies will resist until their competitors prove it works.

    The “build for six months from now” advice is dangerous and brilliant. Dangerous because your product will underperform for months and investors will get nervous. Brilliant because when the next model drops, you’ll have the only product that takes full advantage of it. This is how Claude Code went from writing 20% of Cherny’s code to 100% — the product was ready when the model caught up.

    The latent demand framework deserves serious study. The traditional version (watching users hack your product) is well-known from the Facebook era. The AI-native version (watching what the model is trying to do) is genuinely new. “The product is the model” is a deceptively simple statement that most AI product builders are still getting wrong by over-engineering workflows and scaffolding.

    The Cowork trajectory matters more than Claude Code. Claude Code transforms engineers. Cowork transforms everyone else. If Cowork delivers on even half of what Cherny describes — paying tickets, managing project spreadsheets, responding to emails, canceling subscriptions — then the total addressable market dwarfs coding tools. The fact that it was built in 10 days and was an immediate hit suggests Anthropic has found product-market fit for agentic AI beyond engineering.

    The safety discussion felt genuine. Cherny’s explanation of mechanistic interpretability — actually being able to monitor model neurons and detect deception — is one of the clearest public explanations of Anthropic’s safety approach. The fact that the safety mission is what brought him back from Cursor (where he lasted only two weeks) speaks to the culture. Whether you think safety is a genuine concern or a competitive moat, it’s clearly a core part of how Anthropic attracts and retains talent.

    The elephant in the room: this is Anthropic’s head of product telling you to use more tokens. Multiple YouTube commenters pointed this out, and they’re right to flag it. But the underlying logic holds: if a less capable model requires more correction rounds and more tokens to achieve the same result, then the “cheaper” model isn’t actually cheaper. That’s a testable claim, and most engineers using these tools regularly will tell you it checks out.

    Whether you agree with the “coding is solved” framing or not, the data is hard to argue with. Four percent of all GitHub commits. Two hundred percent productivity gains per engineer. A product that was built in 10 days and scaled to millions of users. These aren’t predictions — they’re measurements. And the curve is still accelerating.

    This article is based on Boris Cherny’s appearance on Lenny’s Podcast, published February 19, 2026. Boris Cherny can be found on X/Twitter and at borischerny.com.