Source: https://seerepo.com/compare/openai/codex/vs/wasmerio/wasmer
Markdown source: https://seerepo.com/compare/openai/codex/vs/wasmerio/wasmer.md
Description: codex and wasmer share 7 technologies: Tokio, tower, zip, schemars, tracing, tracing-subscriber, and log. Both are written in Rust.

# codex vs wasmer

codex and wasmer share 7 technologies: Tokio, tower, zip, schemars, tracing, tracing-subscriber, and log. Both are written in Rust.

- [openai/codex](https://seerepo.com/r/openai/codex): Lightweight coding agent that runs in your terminal
- [wasmerio/wasmer](https://seerepo.com/r/wasmerio/wasmer): 🚀 Fast and lightweight sandboxes for your apps and AI agents

## What they share and what sets them apart

- In common: Tokio, tower, zip, schemars, tracing, tracing-subscriber, log
- Only in codex: axum, lru, SQLite, Sentry, objc2-app-kit, objc2-foundation, Ratatui, crossterm, keyring, hmac, rmcp, png, image, pulldown-cmark, Pydantic, tracing-appender
- Only in wasmer: dialoguer, indicatif, comfy-table, console, console-subscriber

## Side by side

| | codex | wasmer |
|---|---|---|
| Size | 2,320,674 lines written, 4,216 code files | 334,322 lines written, 958 code files |
| Who writes it | 2.8% of its commits signed by AI. With Codex, Claude Code, and GitHub Copilot | 0.5% of its commits signed by AI. With Codex, Claude Code, and GitHub Copilot |
| Activity | Last push November 4, 2026, 13,099 commits, 133,103 stars | Last push November 5, 2026, 16,762 commits, 21,221 stars |
| Tests | 2,448 test files. 51.6% of its code files have a test that imports them | 202 test files. 2.9% 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 wasmer?

codex, with 2,320,674 lines written; wasmer has 334,322.

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

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

codex, with 133,103 stars; wasmer has 21,221.

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

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

codex, with 2,448 test files; wasmer has 202.

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

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

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

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

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

codex: an AI signed 2.8% of its commits, with Codex, Claude Code, and GitHub Copilot; in wasmer, 0.5%.

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)
- wasmerio/wasmer: Read on November 5, 2026, at commit 66ad7a7 (https://github.com/wasmerio/wasmer/tree/66ad7a78ec0cb60700b07987ebcd94e4c6a4d575)

## 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.