Source: https://seerepo.com/compare/openai/codex/vs/slint-ui/slint
Markdown source: https://seerepo.com/compare/openai/codex/vs/slint-ui/slint.md
Description: codex and slint share 7 technologies: Tokio, objc2-app-kit, objc2-foundation, image, pulldown-cmark, tracing, and log. Both are written in Rust.

# codex vs slint

codex and slint share 7 technologies: Tokio, objc2-app-kit, objc2-foundation, image, pulldown-cmark, tracing, and log. Both are written in Rust.

- [openai/codex](https://seerepo.com/r/openai/codex): Lightweight coding agent that runs in your terminal
- [slint-ui/slint](https://seerepo.com/r/slint-ui/slint): Slint is an open-source declarative GUI toolkit to build native user interfaces for Rust, C++, JavaScript, or Python apps.

## What they share and what sets them apart

- In common: Tokio, objc2-app-kit, objc2-foundation, image, pulldown-cmark, tracing, log
- Only in codex: axum, lru, SQLite, Sentry, tower, Ratatui, crossterm, keyring, hmac, rmcp, png, zip, schemars, Pydantic, tracing-subscriber, tracing-appender
- Only in slint: objc2-quartz-core, muda

## Side by side

| | codex | slint |
|---|---|---|
| Size | 2,320,674 lines written, 4,216 code files | 508,135 lines written, 585 code files |
| Who writes it | 2.8% of its commits signed by AI. With Codex, Claude Code, and GitHub Copilot | 0.9% of its commits signed by AI. With Claude Code and GitHub Copilot |
| Activity | Last push November 4, 2026, 13,099 commits, 133,103 stars | Last push November 4, 2026, 20,885 commits, 24,376 stars |
| Tests | 2,448 test files. 51.6% of its code files have a test that imports them | 316 test files. 12.3% 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 slint?

codex, with 2,320,674 lines written; slint has 508,135.

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

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

codex, with 133,103 stars; slint has 24,376.

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

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

codex, with 2,448 test files; slint has 316.

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

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

Both got their last push on November 4, 2026.

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

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

codex: an AI signed 2.8% of its commits, with Codex, Claude Code, and GitHub Copilot; in slint, 0.9%.

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)
- slint-ui/slint: Read on November 4, 2026, at commit 9fb8599 (https://github.com/slint-ui/slint/tree/9fb859998e1d4768243e9dcd9637dd2b837fd1fa)

## 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.