Compare
deno vs codex
deno and codex share 11 technologies: SQLite, Tokio, tower, crossterm, hmac, keyring, image, zip, log, tracing, and tracing-subscriber. Both are written in Rust.
What they share and what sets them apart
denoland
deno
A modern runtime for JavaScript and TypeScript.
Rust108.8kRead on November 4, 2026, at commit e7b39ebWhat is deno built with?openai
codex
Lightweight coding agent that runs in your terminal
Rust133.1kRead on November 4, 2026, at commit 021fccbWhat is codex built with?In common
Only in deno
- React
rusqlite
- wgpu
- ed25519-dalek
- argon2
- hkdf
- plist
- opentelemetry
- tracing-opentelemetry
- env_logger
Only in codex
Side by side
denocodex
SizeLines written by people and agents, without generated ones; code files, without tests.
deno1,217,015 lines written1,355 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.
deno2.4% of its commits signed by AIWith Claude Code, GitHub Copilot, Cursor, and Codex
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.
denoLast push October 29, 202617,392 commits108,801 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.
deno4,394 test files6.1% 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, deno or codex?
codex, with 2,320,674 lines written; deno has 1,217,015.
The proof: openai/codex's code at commit 021fccb
Which has more GitHub stars, deno or codex?
codex, with 133,103 stars; deno has 108,801.
The proof: openai/codex on GitHub
Which has more tests, deno or codex?
deno, with 4,394 test files; codex has 2,448.
The proof: denoland/deno's code at commit e7b39eb
Which was updated more recently, deno or codex?
codex: its last push was on November 4, 2026, and deno's on October 29, 2026.
The proof: openai/codex's commits on GitHub
Which has more commits signed by AI, deno or codex?
codex: an AI signed 2.8% of its commits, with Codex, Claude Code, and GitHub Copilot; in deno, 2.4%.
The proof: the commits each tool signed in openai/codex
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