@FeitengLi: The loop / loop engineering that's been trending on Twitter recently comes from this May 4 interview — Anthropic's Claude Code creator Boris Cherny (author of a TypeScript book, a coder at heart)...

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Anthropic's Claude Code creator Boris Cherny systematically introduced the loop engineering method at Sequoia AI Ascent 2026, stating that programming is now 100% done by AI, and predicted that software will become as democratized as the printing press.

Recently, the loop / loop engineering that's been trending on Twitter originates from this interview on May 4 — Anthropic's Claude Code creator Boris Cherny (an engineer who wrote a TypeScript textbook and lives by coding) systematically explained for the first time how he uses loops at Sequoia AI Ascent 2026. I have translated the entire interview video into Chinese. The first point he made: for him, programming is 100% solved. 'For me, 100%.' Not just talk — he said the model now writes 100% of his code, he submits dozens of PRs daily, with a single-day record of 150 PRs last week. The Claude Code codebase is no secret (it was leaked), just TypeScript plus React. So how does he alone manage 150 PRs in a day? With loops. This is the approach that's been widely discussed — he has Claude use cron to schedule repetitive tasks and then lets them run unattended: 'And by now, I already have dozens of loops running various tasks.' One loop monitors PRs, fixes CI, and automatically rebases; another scrapes feedback from Twitter every 30 minutes to cluster them for him. He gave a strong assessment: 'I now believe loops are the future.' He also mentioned the recently launched routines, which work on the same principle but run on servers — 'even if you close your laptop, it keeps running.' But is this just one person's geeky approach? No. He said that within Anthropic, 'there is no longer any hand-written code; all SQL is written by models.' Engineers' individual Claudes run in loops and communicate via Slack to solve problems together. With coding so cheap, will software companies lose their value — the end of SaaS? He doesn't think so, but believes the moats will reshuffle. Using Hamilton Helmer's 'Seven Powers' framework: switching costs and process barriers will fail first, while network effects and economies of scale remain effective. He also bet on a number: 'I think the number of startups that will disrupt everything over the next 10 years will increase 10-fold.' So what will writing software itself become? He brought up the printing press: 50 years after its invention, the amount of text published in Europe exceeded the total of the previous millennium, book prices dropped nearly 100-fold, and literacy eventually rose from about 10% to about 70%. He predicts software will follow the same path of democratization, 'much faster than 50 years,' and eventually 'become a skill, like sending a text message.' The punchline is sharp — the best people to write accounting software are accountants, not engineers: 'Coding is the easy part; the hard part is domain knowledge.' When asked what will happen in two years, the creator gave the most honest answer: 'Oh, two years from now? Man, I really don't know. We only plan a week ahead.' · Loops are the future: dozens of cron agents monitoring PRs, fixing CI, gathering feedback · Programming 100% solved, 150 PRs per day · Company has zero hand-written code; Claude instances loop with each other via Slack · Switching costs/process barriers collapse first; disruptors 10x · Printing press analogy: software democratized like literacy
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Recently, the term “loop / loop engineering” has been trending repeatedly on Twitter. The origin is this interview from May 4th — Boris Cherny, the creator of Anthropic’s Claude Code (author of a TypeScript textbook, an engineer who builds things by writing code), spoke for the first time at Sequoia AI Ascent 2026 about how he uses loops. I’ve translated the full interview video into Chinese.

The first point he made: for him, programming is 100% solved.

“For me, 100%.”

Not just talk — he said the model now writes 100% of his code, he submits dozens of PRs a day, and last week his single-day record was 150 PRs. The codebase of Claude Code is no secret (it’s been leaked) — it’s just TypeScript plus React.

So how does one person sustain 150 PRs a day?

By looping. This is the method being discussed everywhere — he has Claude use cron to schedule repetitive tasks and just lets them run:

“And by now, I’ve got dozens of loops running all sorts of tasks.”

One loop watches PRs, fixes CI, and auto-rebases; another grabs feedback from Twitter every 30 minutes and clusters it for him. His verdict is strong:

“I think loops are the future right now.”

He also mentioned the recently launched “routines” — same concept but running on the server — “even if you shut your laptop, it keeps going.”

But is this just a solo geek’s play?

No. He said that inside Anthropic, “there’s no hand-written code anymore — all SQL is written by models.” Each engineer’s Claude runs in a loop, and they even communicate through Slack to solve problems together.

If writing code is this cheap, does that mean software companies lose their value — the end of SaaS?

He doesn’t think so, but believes the moats will reshuffle. Borrowing from Hamilton Helmer’s “7 Powers” framework: switching costs and process barriers will fail first, while network effects and scale economies still hold. He also bet on a number:

“I think the number of startups that will disrupt everything in the next 10 years will grow by 10x.”

So what does writing software itself become?

He brings up the printing press: 50 years after the printing press was invented, Europe produced more text than the previous thousand years combined, book prices dropped nearly 100x, and literacy eventually rose from about 10% to about 70%. He predicts software will follow the same path of democratization — “much faster than 50 years” — and ultimately “become a skill, like being able to text.”

The punchline is sharp: the best people to write accounting software aren’t engineers — they’re accountants. “Coding is the easy part; the hard part is domain knowledge.”

When asked what things will look like two years from now, the creator gave the most honest answer: “Oh, two years? Dude, I have no idea. We only plan one week ahead.”

· Loops are the future: dozens of cron agents watching PRs, fixing CI, gathering feedback · Programming 100% solved, 150 PRs a day · Company: zero hand-written code, Claudes looping through Slack to talk to each other · Switching costs/process barriers collapse first, disruptors 10x · Printing press analogy: software will democratize like literacy

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