Vibe Coding is a term coined by Andrej Karpathy in 2025, describing a way of programming where you hand many code details over to AI and mainly describe your intent in natural language, run the results, and keep adjusting.
It isn't writing code line by line in the traditional sense—it's more like "conversationally building software" together with an AI coding assistant. You say what you want, the AI generates code; you run it to see the effect, then tell the AI what's wrong; the AI keeps fixing. The person spends more effort on steering the direction and the experience, and less on hand-writing details.
Grab It in One Sentence First
Vibe coding is directing AI to write code in natural language, with the person focusing more on the effect the software should have than on writing out every piece of code line by line from the start.
An everyday analogy is hiring a renovation crew to build a show unit. You don't necessarily lay the bricks, run the wiring, and paint yourself; instead you describe the style, features, and changes you want, and the crew builds you a version, which you view on-site before saying "it's too dark here," "this door needs to move," or "there's not enough storage." The AI in vibe coding is like this crew, but whether the house is livable in the end still requires an inspection.
Why It Became Popular
Cloudflare explains vibe coding as AI-assisted coding, and notes that the term comes from Karpathy's phrasing in February 2025. Collins also named vibe coding its Word of the Year for 2025, with a definition along the lines of using natural-language prompts to have AI assist with writing code.
The term caught on because AI coding tools got stronger. In the past, people who couldn't write code had a hard time going from an idea to runnable software; now they can describe interfaces, features, and flows in natural language and have the AI generate a working version first. Professional developers can also use it to quickly build prototypes, scripts, and small tools.
flowchart LR
Idea["Idea / Requirement"] --> Prompt["Natural-language description"]
Prompt --> AI["AI coding assistant"]
AI --> Code["Generate code"]
Code --> Run["Run and observe"]
Run --> Feedback["Feedback and changes"]
Feedback --> AIHow It Differs from Ordinary AI-Assisted Coding
Ordinary AI-assisted coding can be very careful: the developer writes code, and the AI completes, explains, and generates snippets, with a person reviewing them carefully at the end. Vibe Coding emphasizes "going with the flow to advance quickly," where the person may not look deeply at every line of code but instead drives the project through run results and interactive feedback.
This is also where it's controversial. For weekend projects, prototypes, and personal tools, it's very effective; but for payments, healthcare, enterprise systems, security permissions, and long-term maintenance projects, accepting AI-generated results without looking at the code at all brings clear risk.
Where It's Easy to Misunderstand
Vibe coding isn't "you can build software risk-free even without knowing how to program." The AI may generate code that runs but is poorly structured, and may leave behind security vulnerabilities, permission issues, performance problems, and logic that's hard to maintain. It makes getting started easier, but it doesn't automatically guarantee engineering quality.
Another misconception is equating it with the entire future of professional development. Real software engineering also includes requirements clarification, architecture design, testing, code review, security, deployment, monitoring, and maintenance. Vibe Coding can speed up the path from idea to prototype, but it can't replace all responsibility.
How to Decide Whether to Use It
If you want to quickly build a personal page, a small tool, a demo prototype, or an automation script, vibe coding is a great fit. It lets you see something running first and then change it gradually.
If a project will handle user data, payments, account permissions, company business, or medical, legal, and financial information, you can't judge it by "it runs" alone. At a minimum, a person needs to review the code, write tests, check dependencies, and handle security and deployment issues. Simply put: Vibe Coding can help you cover the first mile quickly, but it can't take responsibility for the final delivery for you.