All technical staff and half of Anthropic sales use Claude Code
Boris Cherny · Inside Claude Code With Its Creator Boris Cherny · Y Combinator · Feb 17, 2026 · at 40:31
Boris Cherny, creator of Claude Code at Anthropic, discusses internal adoption of the tool across technical and non-technical teams.
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“Internally, if you look at like technical employees, they all use quad code every day. And even non-technical employees, I think like half the sales team uses quad code.”
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“And he had the model rewrite it from Zig to Rust. It was one prompt. It was a dynamic workflow, and a dynamic workflows are a feature in quad code that essentially let you orchestrate, you know, dozens, 100,000 of agents to do work productively. And it ran for…”
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“And so now we have every day, maybe 20 or 30 of these routines. It's running across all of our code bases and It's not totally there yet, but we're on the path to fully automating the maintenance of our apps by doing this. And this is, again, hundreds of agent…”
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“And since Quad Code came out, productivity per engineer at Anthropic has grown a 150%.”
Cherny uninstalled his IDE and lands 20 AI-written PRs daily
“For me personally, it's been a hundred percent for like since Opus 4.5. I just, I uninstalled my IDE. I don't edit a single line of code by hand. It's just a hundred percent quad code in Opus. And you know, I land, you know, like 20 pairs a day, every day.”