herdr vs codex
herdr and codex share 7 technologies: Tokio, Ratatui, crossterm, png, schemars, tracing, and tracing-subscriber. Both are written in Rust.
LinkedInWhat they share and what sets them apart
herdrdev
herdr
the runtime your coding agents live on
Rust48.3kRead on November 5, 2026, at commit ee5bfb5What is herdr built with?Only in herdr
In common
openai
codex
Lightweight coding agent that runs in your terminal
Rust133.1kRead on November 4, 2026, at commit 021fccbWhat is codex built with?Only in codex
Side by side
herdrcodex
SizeLines written by people and agents, without generated ones; code files, without tests.
herdr339,816 lines written365 code files
codex2,320,674 lines written4,216 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
herdr0.3% of its commits signed by AIWith Claude Code, Factory, GitHub Copilot, and Cursor
codex2.8% of its commits signed by AIWith Codex, Claude Code, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
herdrLast push November 3, 20261,875 commits48,295 stars
codexLast push November 4, 202613,099 commits133,103 stars
TestsThe files that test the code, and the share of code files a test imports.
herdr105 test files40.3% of its code files have a test that imports them
codex2,448 test files51.6% of its code files have a test that imports them
Frequently asked questions
Which is bigger, herdr or codex?
codex, with 2,320,674 lines written; herdr has 339,816.
The proof: openai/codex's code at commit 021fccb
Which has more GitHub stars, herdr or codex?
codex, with 133,103 stars; herdr has 48,295.
The proof: openai/codex on GitHub
Which has more tests, herdr or codex?
codex, with 2,448 test files; herdr has 105.
The proof: openai/codex's code at commit 021fccb
Which was updated more recently, herdr or codex?
codex: its last push was on November 4, 2026, and herdr's on November 3, 2026.
The proof: openai/codex's commits on GitHub
Which has more commits signed by AI, herdr or codex?
codex: an AI signed 2.8% of its commits, with Codex, Claude Code, and GitHub Copilot; in herdr, 0.3%.
The proof: the commits each tool signed in openai/codex
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