I’ve built projects of the size in 5-7 months before we had LLM coding tools.

With tabbed completion (Which most devs enjoy), and before full LLM code gen, 4-6 months.

With llm assistance, not vibe coding, it’s possible to build projects like this in 1 to 2 months without sacrificing quality or safety. If you are an experienced engineer and have built projects like this before. A lot of these are boring, boilerplate, stuff.

So the time spent doesn’t necessarily say that it’s vibe coded but if this is an inexperienced engineer then it very well might be and may be full of holes and issues.