# Aider has written 7% of its own code (outdated, now 70%)

This article is quite old and outdated. Aider is currently writing about 70% of the new code in each release. See [aider’s release history](/content/HISTORY.html) for the latest statistics.

The [aider git repo](https://github.com/Aider-AI/aider) currently contains about 4K commits and 14K lines of code.

Aider made 15% of the commits, inserting 4.8K and deleting 1.5K lines of code.

About 7% of the code now in the repo is attributable to an aider commit using `git blame`. This number is probably a significant undercount, because periodic reformatting by `black` is likely obscuring aider’s authorship of many lines.

Here’s the breakdown of the code aider wrote in the current code base according to `git blame`.

| File | Lines | Percent |
| --- | --- | --- |
| aider/args.py | 6 of 449 | 1.3% |
| aider/coders/base_coder.py | 37 of 1354 | 2.7% |
| aider/coders/editblock_coder.py | 14 of 507 | 2.8% |
| aider/coders/editblock_func_coder.py | 6 of 141 | 4.3% |
| aider/coders/udiff_coder.py | 2 of 421 | 0.5% |
| aider/coders/wholefile_coder.py | 5 of 146 | 3.4% |
| aider/coders/wholefile_func_coder.py | 4 of 134 | 3.0% |
| aider/commands.py | 67 of 703 | 9.5% |
| aider/diffs.py | 15 of 129 | 11.6% |
| aider/gui.py | 2 of 533 | 0.4% |
| aider/history.py | 19 of 124 | 15.3% |
| aider/io.py | 55 of 368 | 14.9% |
| aider/linter.py | 30 of 240 | 12.5% |
| aider/main.py | 30 of 466 | 6.4% |
| aider/mdstream.py | 3 of 122 | 2.5% |
| aider/models.py | 22 of 549 | 4.0% |
| aider/repo.py | 19 of 266 | 7.1% |
| aider/repomap.py | 17 of 518 | 3.3% |
| aider/scrape.py | 12 of 199 | 6.0% |
| aider/versioncheck.py | 10 of 37 | 27.0% |
| aider/voice.py | 9 of 104 | 8.7% |
| benchmark/benchmark.py | 33 of 730 | 4.5% |
| benchmark/over_time.py | 32 of 60 | 53.3% |
| benchmark/swe_bench_lite.py | 40 of 71 | 56.3% |
| scripts/blame.py | 55 of 212 | 25.9% |
| scripts/versionbump.py | 96 of 123 | 78.0% |
| setup.py | 11 of 47 | 23.4% |
| tests/test_coder.py | 48 of 612 | 7.8% |
| tests/test_commands.py | 135 of 588 | 23.0% |
| tests/test_editblock.py | 23 of 403 | 5.7% |
| tests/test_io.py | 30 of 65 | 46.2% |
| tests/test_main.py | 13 of 239 | 5.4% |
| tests/test_models.py | 6 of 28 | 21.4% |
| tests/test_repo.py | 2 of 296 | 0.7% |
| tests/test_repomap.py | 70 of 217 | 32.3% |
| tests/test_udiff.py | 7 of 119 | 5.9% |
| tests/test_wholefile.py | 37 of 321 | 11.5% |
| **Total** | **1022 of 14219** | **7.2%** |