codex vs rtk
codex and rtk share 9 technologies: axum, SQLite, Tokio, tower, Ratatui, crossterm, image, tracing, and tracing-subscriber. Both are written in Rust.
LinkedInWhat they share and what sets them apart
openai
codex
Lightweight coding agent that runs in your terminal
Rust133.1kRead on November 4, 2026, at commit 021fccbWhat is codex built with?Only in codex
- lru
- Sentry
objc2-app-kit
- keyring
- hmac
- rmcp
- png
- pulldown-cmark
- zip
- schemars
- Pydantic
- log
tracing-appender
In common
rtk-ai
rtk
CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies
Rust85.6kRead on November 4, 2026, at commit b47e05bWhat is rtk built with?Only in rtk
rusqlite
- tiktoken-rs
- quick-xml
Side by side
codexrtk
SizeLines written by people and agents, without generated ones; code files, without tests.
codex2,320,674 lines written4,216 code files
rtk219,272 lines written253 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.
codex2.8% of its commits signed by AIWith Codex, Claude Code, and GitHub Copilot
rtk33.7% of its commits signed by AIWith Claude Code, Codex, and Cursor
ActivityFrom GitHub and its history, on the day SeeRepo read it.
codexLast push November 4, 202613,099 commits133,103 stars
rtkLast push November 4, 20261,914 commits85,563 stars
TestsThe files that test the code, and the share of code files a test imports.
codex2,448 test files51.6% of its code files have a test that imports them
rtk84 test files4% of its code files have a test that imports them
Frequently asked questions
Which is bigger, codex or rtk?
codex, with 2,320,674 lines written; rtk has 219,272.
The proof: openai/codex's code at commit 021fccb
Which has more GitHub stars, codex or rtk?
codex, with 133,103 stars; rtk has 85,563.
The proof: openai/codex on GitHub
Which has more tests, codex or rtk?
codex, with 2,448 test files; rtk has 84.
The proof: openai/codex's code at commit 021fccb
Which was updated more recently, codex or rtk?
Both got their last push on November 4, 2026.
The proof: rtk-ai/rtk's commits on GitHub
Which has more commits signed by AI, codex or rtk?
rtk: an AI signed 33.7% of its commits, with Claude Code, Codex, and Cursor; in codex, 2.8%.
The proof: the commits each tool signed in rtk-ai/rtk
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