What is Vibe Coding? The Complete Guide for 2026

Vibe coding is building software by telling an AI what you want instead of writing the code yourself. You describe the app in plain English. Tools like Cursor, Bolt, Lovable, Replit, and v0 generate the code for you. Andrej Karpathy coined the term in February 2025. He described it as "fully giving in to the vibes" and letting AI handle the code while you focus on what the app should do. Collins Dictionary named it the Word of the Year for 2025. And it's not a toy anymore. People are shipping real products this way. SaaS apps, marketplaces, internal tools, landing pages. Some of them making real revenue. But vibe coding comes with a very specific set of problems that traditional developers don't hit. How Vibe Coding Actually Works You open an AI coding tool. You type something like "build me a todo app with authentication, a Postgres database, and deploy it to Vercel." The AI generates a full codebase. React frontend, API routes, database schema, auth flow. Sometimes it even deploys it