A quiet shift is showing up in search data: phrases such as “ai assisted development” and “ai assisted software development” are now turning up beside “vibe coding”, usually from people who are about to commission something and are trying to work out which one they are buying. The terms get used as if they mean the same thing. They do not.
The distinction in one line
Vibe coding means describing what you want to an AI tool and accepting what it produces, often without reading the code. AI-assisted development means professional engineers using tools such as Claude Code, Cursor and GitHub Copilot to work faster, while they still design, review, test and take responsibility for the result.
The tools can be identical. The accountability is not.
Why it matters when you commission
- Who reads the code. In vibe coding, often nobody. In AI-assisted development, an engineer reviews every change before it ships.
- What happens at the edges. Authentication, payments, data protection and app store rules are where unreviewed generated code fails. Our earlier signals on vibe coding security risks cover the pattern.
- Who fixes it. A prototype you generated yourself has no one on call. A delivered product has a team that owns it.
- Speed. Both are fast. AI-assisted teams usually spend the saved time on testing and review, not on cutting the price to nothing.
Where each makes sense
Vibe coding is a legitimate way to test an idea, build an internal demo or show investors a clickable concept. It is a poor foundation for anything handling customer data, money or regulated information, such as healthcare software.
AI-assisted development is the right default once the product has to survive real users, updates and security scrutiny.
So what
When a supplier says they use AI, ask three questions: who reviews the code, what is tested automatically, and who is responsible when it breaks. The answers tell you which of the two you are buying. BuildApps works this way as standard; see how we approach AI-assisted development, or start a project to discuss yours.