Is Vibe coding effective
Is Vibe coding effective?
It appears the answer is “Yes”.
Just saw a talk from a team that did an experiment to prove it.
They built the same app using two teams:
1. DIY team that can’t use AI for anything.
2. AI team that must use AI to write all code. No manual coding allowed. They used 80% Cursor and 20% Copilot.
Result?
AI team was about 45% faster, and quality was comparable. A senior dev was shown both codebases and couldn’t tell which one was AI generated.
The AI team used the Figma MCP to build the pages based on Figma docs which is why the pages were built WAY faster than the DIY team.
AI was slower in some cases because AI struggled to get it right, so they had to keep trying prompts (since the rule was no manual coding for the AI team).
Fascinating.


Lots of skeptics in the replies regarding a senior dev not being able to tell the difference between AI generated cod and hand written.
The senior dev was shown PRs along the way and not told which were AI generated. He couldn’t consistently say which ones were from AI.