In April 2026, Andrej Karpathy — co-founder of OpenAI and one of the most-followed voices in AI — published a short note describing exactly this setup: the "LLM Wiki." No product, no code, no company — just a recipe.

Three months later, the idea has gone viral, drawn product responses from Google and Anthropic, and sparked a debate about what comes next. How did we get here? Where are we now? And where is this going?

Scroll through LinkedIn or tech Twitter this month and one phrase keeps jumping out: loop engineering. A few weeks ago almost nobody said it. Now it's everywhere — and the startling part is who's saying it. The people who build the world's leading AI coding agents say they've largely stopped writing prompts at all.