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Head of Claude Code: What happens after coding is solved | Boris Cherny

Overview

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Head of Claude Code: What happens after coding is solved | Boris Cherny

Lenny's Podcast: Product | Career | Growth

Feb 19
Lenny's Podcast: Product | Career | Growth

Lenny's Podcast: Product | Career | Growth

Feb 19
OverviewShownoteHighlightsTranscriptChaptersPins

Shownote

Boris Cherny is the creator and head of Claude Code at Anthropic. What began as a simple terminal-based prototype just a year ago has transformed the role of software engineering and is increasingly transforming all professional work. We discuss: 1. How Claude Code grew from a quick hack to 4% of public GitHub commits, with daily active users doubling last month 2. The counterintuitive product principles that drove Claude Code’s success 3. Why Boris believes coding is “solved” 4. The latent demand that shaped Claude Code and Cowork 5. Practical tips for getting the most out of Claude Code and Cowork 6. How underfunding teams and giving them unlimited tokens leads to better AI products 7. Why Boris briefly left Anthropic for Cursor, then returned after just two weeks 8. Three principles Boris shares with every new team member — Brought to you by: DX [https://getdx.com/lenny]—The developer intelligence platform designed by leading researchers: https://getdx.com/lenny [https://getdx.com/lenny] Sentry [https://sentry.io/lenny]—Code breaks, fix it faster: https://sentry.io/lenny [https://sentry.io/lenny] Metaview [https://metaview.ai/lenny]—The AI platform for recruiting: https://metaview.ai/lenny [https://metaview.ai/lenny] — Episode transcript: https://www.lennysnewsletter.com/p/head-of-claude-code-what-happens [https://www.lennysnewsletter.com/p/head-of-claude-code-what-happens] — Archive of all Lenny's Podcast transcripts: https://www.dropbox.com/scl/fo/yxi4s2w998p1gvtpu4193/AMdNPR8AOw0lMklwtnC0TrQ?rlkey=j06x0nipoti519e0xgm23zsn9&st=ahz0fj11&dl=0 [https://www.dropbox.com/scl/fo/yxi4s2w998p1gvtpu4193/AMdNPR8AOw0lMklwtnC0TrQ?rlkey=j06x0nipoti519e0xgm23zsn9&st=ahz0fj11&dl=0] — Where to find Boris Cherny: • X: https://x.com/bcherny [https://x.com/bcherny] • LinkedIn: https://www.linkedin.com/in/bcherny [https://www.linkedin.com/in/bcherny] • Website: https://borischerny.com [https://borischerny.com] — Where to find Lenny: • Newsletter: https://www.lennysnewsletter.com [https://www.lennysnewsletter.com] • X: https://twitter.com/lennysan [https://twitter.com/lennysan] • LinkedIn: https://www.linkedin.com/in/lennyrachitsky/ [https://www.linkedin.com/in/lennyrachitsky/] — In this episode, we cover: (00:00) Introduction to Boris and Claude Code (03:45) Why Boris briefly left Anthropic for Cursor (and what brought him back) (05:35) One year of Claude Code (08:41) The origin story of Claude Code (13:29) How fast AI is transforming software development (15:01) The importance of experimentation in AI innovation (16:17) Boris’s current coding workflow (100% AI-written) (17:32) The next frontier (22:24) The downside of rapid innovation  (24:02) Principles for the Claude Code team (26:48) Why you should give engineers unlimited tokens (27:55) Will coding skills still matter in the future? (32:15) The printing press analogy for AI’s impact (36:01) Which roles will AI transform next? (40:41) Tips for succeeding in the AI era (44:37) Poll: Which roles are enjoying their jobs more with AI (46:32) The principle of latent demand in product development (51:53) How Cowork was built in just 10 days (54:04) The three layers of AI safety at Anthropic (59:35) Anxiety when AI agents aren’t working (01:02:25) Boris’s Ukrainian roots (01:03:21) Advice for building AI products (01:08:38) Pro tips for using Claude Code effectively (01:11:16) Thoughts on Codex (01:12:13) Boris’s post-AGI plans (01:14:02) Lightning round and final thoughts — References: https://www.lennysnewsletter.com/p/head-of-claude-code-what-happens [https://www.lennysnewsletter.com/p/head-of-claude-code-what-happens] — Production and marketing by https://penname.co/ [https://penname.co/]. For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com [podcast@lennyrachitsky.com]. — Lenny may be an investor in the companies discussed. To hear more, visit www.lennysnewsletter.com [https://www.lennysnewsletter.com?utm_medium=podcast&utm_campaign=show-notes-no-free-preview-language]

Highlights

Boris Cherny, head of Claude Code at Anthropic, shares insights from the rapid evolution of AI-augmented software development—how a scrappy terminal prototype became foundational to engineering workflows and catalyzed broader agentic tools like Cowork.
00:00
Coding is largely solved by AI
03:49
He missed Anthropic's safety-focused mission, which originally attracted him to the company and is essential for his job satisfaction
05:35
Claude Code authored 4% of all public GitHub commits in its first year
08:41
The model demonstrated surprising autonomy in using tools independently
13:29
By November, the speaker personally reached 100% AI-written code
15:01
In the early days of Claude Code, they didn't think it would be useful, but gradually its capabilities improved until it reached 100% of their coding workflow
16:17
100% of Anthropic's code has been written by Claude Code since November
19:58
Since introducing Claude Code, Anthropic has seen a 200% increase in engineer productivity
22:25
A newer engineer solved a memory leak faster using Claude Code than the speaker did with traditional debugging
24:02
Giving engineers unlimited tokens to experiment with AI leads to better use of AI tools and more productivity
26:49
Be liberal with token usage as interesting ideas come from pushing the limit
30:20
Programmers have always adapted to new tools—from pen-and-paper to AI—so skill atrophy fears are overblown
34:52
The fun part is determining what to build, engaging with users, and collaborating
38:23
AI has made coding more enjoyable and the Claude Code team is hiring
40:42
In the future, distinctions between engineering, design, and product management will become murkier, possibly with titles like 'builder' becoming more common
44:37
70% of engineers and PMs enjoy their jobs more since adopting AI tools, versus 55% of designers
51:26
For Claude Code, the product is the model—exposed with minimal scaffolding so it decides tool usage and order
51:54
Cowork was built in 10 days and quickly used by millions
54:04
Releasing AI early enables discovery of latent demand and real-world safety learning
1:01:59
His mother drew on the punch cards as a childhood memory
1:02:26
Their families now toast to America—sometimes still with vodka
1:08:09
Models can now run unattended for hours or longer
1:08:39
Using Opus 4.6 can be cheaper and less token-intensive than smaller models
1:11:19
Their team focuses on solving user problems, not spending much time on competing products
1:12:13
If not at Anthropic or post-AGI, Boris would make miso
1:20:57
Cowork is Anthropic's new AI agent that can perform tasks like filling out forms and is growing faster than Claude Code did a year ago

Chapters

Introduction to Boris and Claude Code
00:00
Why Boris briefly left Anthropic for Cursor (and what brought him back)
03:45
One year of Claude Code
05:35
The origin story of Claude Code
08:41
How fast AI is transforming software development
13:29
The importance of experimentation in AI innovation
15:01
Boris’s current coding workflow (100% AI-written)
16:17
The next frontier
17:32
The downside of rapid innovation 
22:24
Principles for the Claude Code team
24:02
Why you should give engineers unlimited tokens
26:48
Will coding skills still matter in the future?
27:55
The printing press analogy for AI’s impact
32:15
Which roles will AI transform next?
36:01
Tips for succeeding in the AI era
40:41
Poll: Which roles are enjoying their jobs more with AI
44:37
The principle of latent demand in product development
46:32
How Cowork was built in just 10 days
51:53
The three layers of AI safety at Anthropic
54:04
Anxiety when AI agents aren’t working
59:35
Boris’s Ukrainian roots
1:02:25
Advice for building AI products
1:03:21
Pro tips for using Claude Code effectively
1:08:38
Thoughts on Codex
1:11:16
Boris’s post-AGI plans
1:12:13
Lightning round and final thoughts
1:14:02

Transcript

Boris Cherny: 100% of my code is written by Claude Code. I have not edited a single line by hand since November. Every day I ship 10, 20, 30 pull requests. So I got the moment I have like five agents running. Lenny Rachitsky: While we're recording this? Y...