# Prompt Engineering Is Dead. Loop Engineering Is Here. > Source: > Published: 2026-07-09 11:30:36+00:00 Member-only story # Prompt Engineering Is Dead. Loop Engineering Is Here. ## Learn what Loop Engineering is, why it matters, and how AI engineers are building autonomous agent workflows. A clip went viral in June 2026 and stopped a lot of engineers cold. [ Boris Cherny](https://thenewstack.io/loop-engineering/) — creator and head of Claude Code at Anthropic — told interviewers that his job had changed: “I don’t prompt Claude anymore. I have loops running that prompt Claude and figuring out what to do. My job is to write loops.” The same week, OpenAI engineer [ Peter Steinberger](https://letsdatascience.com/news/engineers-embrace-loop-engineering-for-ai-agents-cb1a1d6a) posted: “You shouldn’t be prompting coding agents anymore. You should be designing loops that prompt your agents.” Then Google engineer [ Addy Osmani](https://cobusgreyling.substack.com/p/loop-engineering) gave the pattern a name: *loop engineering.*“**Prompt engineering is dead**” started trending. *This article explains what loop engineering actually is, what changed, and why it matters for the future of building with AI.* Loop engineering is the practice of designing AI systems that generate, evaluate, and improve their own work until they meet a predefined goal.In one sentence: