Claude directly has over 1100000 lines of direct code contribution. It has pretty much the same amount of code committed directly as the creator has.

His entire coding history before Claude consisted of changing readmes or searching and replacing project name text or modifying a dead link to his own link.

Suddenly in 4 months, without ever producing actual code before, he becomes a very competent coder enough to tackle mCAD, a notoriously difficult coding task that takes many many years with teams to make meaningful progress on?

That is vibe coding.

And his co-contributer "gianlucafiore" is exactly the same story. Has literally only made issues until LLM coding got released and then late 2025 (December) switched to making commits that he badly copied from an LLM such that some of the commits are literally one full line (as direct in-file working of the LLM wasn't as accessible then)

That is vibe coding.

So the top 3 contributes are

1. An LLM
2. Someone that only has committed any code via an LLM
3. Someone who has only made issues before beginning with an LLM and submits clearly generated code

There is likely no human-made code in the entire project besides changing a couple links.