Source: https://seerepo.com/compare/1jehuang/jcode/vs/openai/codex
Markdown source: https://seerepo.com/compare/1jehuang/jcode/vs/openai/codex.md
Description: jcode and codex share 8 technologies: SQLite, Tokio, objc2-app-kit, objc2-foundation, Ratatui, crossterm, image, and pulldown-cmark. Both are written in Rust.

# jcode vs codex

jcode and codex share 8 technologies: SQLite, Tokio, objc2-app-kit, objc2-foundation, Ratatui, crossterm, image, and pulldown-cmark. Both are written in Rust.

- [1jehuang/jcode](https://seerepo.com/r/1jehuang/jcode): High performance coding agent harness written in Rust, built for heavy multi-agent dev workflows
- [openai/codex](https://seerepo.com/r/openai/codex): Lightweight coding agent that runs in your terminal

## What they share and what sets them apart

- In common: SQLite, Tokio, objc2-app-kit, objc2-foundation, Ratatui, crossterm, image, pulldown-cmark
- Only in jcode: rusqlite, core-graphics, global-hotkey, aws-sdk-sts, azure_identity, aws-sdk-bedrockruntime, tokenizers, pillow, usvg, resvg, lettre, mail-parser, qrcode, jsonschema, azure_core, Ajv
- Only in codex: axum, lru, Sentry, tower, keyring, hmac, rmcp, png, zip, schemars, Pydantic, tracing, tracing-subscriber, log, tracing-appender

## Side by side

| | jcode | codex |
|---|---|---|
| Size | 1,009,350 lines written, 1,319 code files | 2,320,674 lines written, 4,216 code files |
| Who writes it | 0.2% of its commits signed by AI. With Claude Code and Gemini CLI | 2.8% of its commits signed by AI. With Codex, Claude Code, and GitHub Copilot |
| Activity | Last push November 5, 2026, 11,111 commits, 21,497 stars | Last push November 4, 2026, 13,099 commits, 133,103 stars |
| Tests | 766 test files. 49.1% of its code files have a test that imports them | 2,448 test files. 51.6% 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, jcode or codex?

codex, with 2,320,674 lines written; jcode has 1,009,350.

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

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

codex, with 133,103 stars; jcode has 21,497.

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

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

codex, with 2,448 test files; jcode has 766.

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

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

jcode: its last push was on November 5, 2026, and codex's on November 4, 2026.

The proof: [1jehuang/jcode's commits on GitHub](https://github.com/1jehuang/jcode/commits)

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

codex: an AI signed 2.8% of its commits, with Codex, Claude Code, and GitHub Copilot; in jcode, 0.2%.

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

## Sources

- 1jehuang/jcode: Read on November 5, 2026, at commit cedcdee (https://github.com/1jehuang/jcode/tree/cedcdee71b721d0c053ee930d6f8ddbf9192e880)
- openai/codex: Read on November 4, 2026, at commit 021fccb (https://github.com/openai/codex/tree/021fccb046508938c4754982efccfb51d6e8356e)

## 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.