Source: https://seerepo.com/compare/openai/codex/vs/oxc-project/oxc
Markdown source: https://seerepo.com/compare/openai/codex/vs/oxc-project/oxc.md
Description: codex and oxc share 4 technologies: Tokio, schemars, tracing, and tracing-subscriber. Both are written in Rust.

# codex vs oxc

codex and oxc share 4 technologies: Tokio, schemars, tracing, and tracing-subscriber. Both are written in Rust.

- [openai/codex](https://seerepo.com/r/openai/codex): Lightweight coding agent that runs in your terminal
- [oxc-project/oxc](https://seerepo.com/r/oxc-project/oxc): ⚓ A collection of high-performance JavaScript tools.

## What they share and what sets them apart

- In common: Tokio, schemars, tracing, tracing-subscriber
- Only in codex: axum, lru, SQLite, Sentry, tower, objc2-app-kit, objc2-foundation, Ratatui, crossterm, keyring, hmac, rmcp, png, image, pulldown-cmark, zip, Pydantic, log, tracing-appender
- Only in oxc: React, Preact, Vue, console, handlebars, Ajv

## Side by side

| | codex | oxc |
|---|---|---|
| Size | 2,320,674 lines written, 4,216 code files | 1,151,882 lines written, 3,112 code files |
| Who writes it | 2.8% of its commits signed by AI. With Codex, Claude Code, and GitHub Copilot | 1.9% of its commits signed by AI. With GitHub Copilot, Claude Code, Cursor, and Codex |
| Activity | Last push November 4, 2026, 13,099 commits, 133,103 stars | Last push November 4, 2026, 21,872 commits, 23,321 stars |
| Tests | 2,448 test files. 51.6% of its code files have a test that imports them | 5,900 test files. 2.7% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, codex or oxc?

codex, with 2,320,674 lines written; oxc has 1,151,882.

The proof: [openai/codex's code at commit 021fccb](https://github.com/openai/codex/tree/021fccb046508938c4754982efccfb51d6e8356e)

### Which has more GitHub stars, codex or oxc?

codex, with 133,103 stars; oxc has 23,321.

The proof: [openai/codex on GitHub](https://github.com/openai/codex)

### Which has more tests, codex or oxc?

oxc, with 5,900 test files; codex has 2,448.

The proof: [oxc-project/oxc's code at commit 3d3a6f4](https://github.com/oxc-project/oxc/tree/3d3a6f468068a3794a44c0e83e9177bd61ea2c00)

### Which was updated more recently, codex or oxc?

Both got their last push on November 4, 2026.

The proof: [oxc-project/oxc's commits on GitHub](https://github.com/oxc-project/oxc/commits)

### Which has more commits signed by AI, codex or oxc?

codex: an AI signed 2.8% of its commits, with Codex, Claude Code, and GitHub Copilot; in oxc, 1.9%.

The proof: [the commits each tool signed in openai/codex](https://seerepo.com/r/openai/codex/ai)

## Sources

- openai/codex: Read on November 4, 2026, at commit 021fccb (https://github.com/openai/codex/tree/021fccb046508938c4754982efccfb51d6e8356e)
- oxc-project/oxc: Read on November 4, 2026, at commit 3d3a6f4 (https://github.com/oxc-project/oxc/tree/3d3a6f468068a3794a44c0e83e9177bd61ea2c00)

## 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.