Source: https://seerepo.com/r/harvard-edge/cs249r_book/ai
Markdown source: https://seerepo.com/r/harvard-edge/cs249r_book/ai.md
Description: AI signed 2.7% of the 22,351 commits of cs249r_book. Each AI tool with its commits, and the last ones it signed.

# How much of cs249r_book did AI write?

AI signed 2.7% of the 22,351 commits of cs249r_book. Signed by Codex (410), Claude (180), Gemini (2), and Cursor (1).

Since its first commit, on September 6, 2023.

## Who signed the commits

- Codex: 410 commits (1.8%)
- Claude: 180 commits (0.8%)
- Gemini: 2 commits (0%)
- Cursor: 1 commit (0%)
- People: 97.3%

## Commits per month

Each month's commits up to its last one, with those an AI signed. Merges don't count.

- 2024-12: 153 commits, 0 signed by AI (0%)
- 2025-01: 312 commits, 0 signed by AI (0%)
- 2025-02: 443 commits, 0 signed by AI (0%)
- 2025-03: 465 commits, 0 signed by AI (0%)
- 2025-04: 118 commits, 0 signed by AI (0%)
- 2025-05: 144 commits, 0 signed by AI (0%)
- 2025-06: 433 commits, 0 signed by AI (0%)
- 2025-07: 660 commits, 3 signed by AI (0.5%)
- 2025-08: 958 commits, 0 signed by AI (0%)
- 2025-09: 361 commits, 56 signed by AI (15.5%)
- 2025-10: 295 commits, 17 signed by AI (5.8%)
- 2025-11: 201 commits, 2 signed by AI (1%)
- 2025-12: 518 commits, 12 signed by AI (2.3%)
- 2026-01: 926 commits, 19 signed by AI (2.1%)
- 2026-02: 530 commits, 0 signed by AI (0%)
- 2026-03: 759 commits, 3 signed by AI (0.4%)
- 2026-04: 1,920 commits, 40 signed by AI (2.1%)
- 2026-05: 2,654 commits, 3 signed by AI (0.1%)
- 2026-06: 1,847 commits, 410 signed by AI (22.2%)
- 2026-07: 232 commits, 0 signed by AI (0%)
- 2026-08: 1,120 commits, 0 signed by AI (0%)
- 2026-09: 2,673 commits, 20 signed by AI (0.7%)
- 2026-10: 2,157 commits, 2 signed by AI (0.1%)
- 2026-11: 148 commits, 6 signed by AI (4.1%)

## The last commits an AI signed

- 2026-11-06 · Claude · [c99f48d](https://github.com/harvard-edge/cs249r_book/commit/c99f48d5e3bf875196c00beeb8c41dbf4e6915fc): StaffML: use the A17 Pro's 51.2 GB/s in five more questions
- 2026-11-06 · Claude · [c17579a](https://github.com/harvard-edge/cs249r_book/commit/c17579a85f05638bd0f1baf67952234060dc027c): Link rot: sync the nightly ignore list and fix two kit links (#1810)
- 2026-11-05 · Claude · [eccb990](https://github.com/harvard-edge/cs249r_book/commit/eccb990f192018884b52284bc93996a27b6c13b3): StaffML: use the A17 Pro's 51.2 GB/s memory bandwidth in 28 questions
- 2026-11-05 · Claude · [d031195](https://github.com/harvard-edge/cs249r_book/commit/d03119524ba88c0366c64beb899a642dd29a43d5): StaffML: fix the stem roofline in edge-1138 and Orin NX specs in edge-2138
- 2026-11-05 · Claude · [7352342](https://github.com/harvard-edge/cs249r_book/commit/7352342887d200f884a08f955d4883268dfe3468): StaffML: count the per-token weight read in six batch-1 decode questions
- 2026-11-04 · Claude · [862999b](https://github.com/harvard-edge/cs249r_book/commit/862999b9a132a643949861bbeb3a0ed72448ea04): mlsysim paper: use the measured ImageNet preprocessing rate in Case S2
- 2026-10-15 · Claude · [df7d6aa](https://github.com/harvard-edge/cs249r_book/commit/df7d6aae4c2f1cff0b328be772a91b524dd07e4f): fix(tinytorch): resolve venv tools by path instead of bare PATH lookup
- 2026-10-13 · Claude · [c17aae3](https://github.com/harvard-edge/cs249r_book/commit/c17aae30caf5ad2088afc25dcc521aef5dfc0d68): fix(tinytorch): venv jupytext resolution fails due to committed .tinyrc override
- 2026-09-20 · Claude · [75b1410](https://github.com/harvard-edge/cs249r_book/commit/75b141032c260b03a79f92193678047684de8561): binder: make the redundant-xref tests type-generic
- 2026-09-20 · Claude · [9f89b08](https://github.com/harvard-edge/cs249r_book/commit/9f89b082d4299c0c8b9068c7790e34e72e5cbc9f): binder: catch the wrapped form when the tie or the capital lands on the break

## How we know

Every AI coding tool leaves its signature in the commits it makes: a Co-Authored-By line, its own author name, or the merge of its branch. SeeRepo reads those signatures in the repo's history; a commit without one counts as made by people, and merges don't count.

Every AI tool SeeRepo recognizes: https://seerepo.com/agents

## Frequently asked questions

### Which AI tool signed the most commits in cs249r_book?

Codex, with 410 of the 22,351 commits of cs249r_book.

### Since when does AI sign commits in cs249r_book?

Since July 2025: the first month an AI tool signed a commit of cs249r_book.

### How many commits does cs249r_book have?

cs249r_book has 22,351 commits since September 6, 2023. Merges don’t count.

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.