Guides · Building with AI
Guides · Building with AI
Vibe coding means describing what you want in plain language and letting an AI write the code, without reading or understanding most of it. It genuinely gets you a working prototype fast, often in an afternoon, and it reliably stops at the same walls: real authentication, data permissions, edge cases, and anything whose consequences the AI cannot see. This page defines the term, shows what it is actually good at, names the failure points we keep finding, and tells you what to do when you hit the wall.
This is the beginner's chapter of our guide to building an app with AI in 2026. Vibe coding is the fastest on-ramp to software anyone has ever had, and it is also the easiest way to ship something that looks finished and quietly is not. Knowing where that line sits is the whole point of this page.
Vibe coding is building software by prompting an AI and accepting what it produces without checking the code. The term comes from AI researcher Andrej Karpathy, who described it in February 2025 as a style where you "fully give in to the vibes, embrace exponentials, and forget that the code even exists." Tools like Cursor, Lovable, Bolt and Replit are what made it possible for anyone to talk an app into being.
The key word is forget. In vibe coding you are not reviewing what the model wrote, you are reacting to whether the screen does what you asked. That is a real way to build, and it is why a non-coder can now get a running app in an afternoon. It also means nobody has looked at the parts of the app that never show up on screen.
Vibe coding is very good at the visible layer and the happy path: a user interface, a first version of your data model, the flow that works when everything goes right, and the boilerplate you would otherwise copy by hand. That is real speed. A demo that used to take a month now takes an afternoon.
It is also the best way we know to find out whether an idea is worth building at all. You can put a rough version in front of five real people and learn more in a day than a month of planning gives you. For a throwaway prototype, an internal tool only you use, or a demo to raise money, vibe coding is often the whole answer, and over-building it would be a waste.
It stops wherever being right matters more than looking right. The AI writes code that makes the screen behave, not code that survives a stranger, a payment, or private data. The same four walls come up every time.
This is measurable, not a hunch. Veracode's 2025 GenAI Code Security Report tested over 100 models and found that 45% of the AI-generated code it reviewed failed security tests and introduced an OWASP Top 10 vulnerability. The remedy is a review of exactly the parts vibe coding skips. The specific holes we keep finding, and how we close them, are in security holes we keep finding in AI-generated apps.
The failure is rarely dramatic on day one. It arrives with the first real user, or the first unattended run. One team came to us after a fully automated website-building app they had built this way ran with no cap on how many jobs could fire at once. They set it going unsupervised and woke up to an AI bill of over $1,000 in a single day, with no spending limit and no real stop switch to pull.
Nothing in the demo warned them. The app did exactly what they had described, it just had no answer for the question they never thought to ask: what happens when this runs a thousand times with nobody watching? That question is the job, and it is the part no prompt covers.
Vibe coding builds what you described. Production is everything you did not think to describe: the hostile user, the empty input, the thousandth run. None of it shows up in a demo, which is exactly why it is expensive to find later.
Keep the prototype, and treat the wall as a handoff, not a failure. For most people the fastest path is to vibe-code the idea until it proves itself, then bring someone in to review and harden the four walls above before real users or real money arrive. If you are still choosing how to build at all, the honest comparison is in how to build an app without coding.
That review is a specific, bounded piece of work, not a rebuild from zero. We start every engagement with a real conversation to find the actual gap, then close it, then harden the security. We have shipped 15 apps this way, with 2 more in progress, each pen-tested before it goes live. If you have vibe-coded something and want to know whether it is safe to put in front of users, book a production-readiness check and we will tell you honestly what holds and what needs work.
Founder and main developer at Zyntari. Building apps and AI solutions since 2024; before that, 12 years in sales and client-portfolio management and co-founder of two companies. More about the team · LinkedIn