Notes Note 002
FR
03— THE NUMBERS

Precise analysis. Not intuition.

Researchers from MBZUAI and UCL published a source-level analysis of Claude Code on arXiv, titled Dive into Claude Code. They went through the codebase line by line.

1,884 files analyzed TYPESCRIPT
512,000 lines of code the full codebase
1.6% AI decision logic the model
98.4% infrastructure (harness) everything else