Source: https://seerepo.com/compare/akitaonrails/ai-memory/vs/openai/codex
Markdown source: https://seerepo.com/compare/akitaonrails/ai-memory/vs/openai/codex.md
Description: ai-memory and codex share 12 technologies: axum, tower, SQLite, Tokio, crossterm, rmcp, zip, pulldown-cmark, schemars, tracing, tracing-subscriber, and tracing-appender. Both are written in Rust.

# ai-memory vs codex

ai-memory and codex share 12 technologies: axum, tower, SQLite, Tokio, crossterm, rmcp, zip, pulldown-cmark, schemars, tracing, tracing-subscriber, and tracing-appender. Both are written in Rust.

- [akitaonrails/ai-memory](https://seerepo.com/r/akitaonrails/ai-memory): Solution for long term memory for agent coding CLIs and to facilitate handoff between different agent vendors
- [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: axum, tower, SQLite, Tokio, crossterm, rmcp, zip, pulldown-cmark, schemars, tracing, tracing-subscriber, tracing-appender
- Only in ai-memory: Tauri, rusqlite, argon2, candle-core, candle-nn, candle-transformers, tokenizers, askama, jsonc-parser, lopdf, quick-xml
- Only in codex: lru, Sentry, objc2-app-kit, objc2-foundation, Ratatui, keyring, hmac, png, image, Pydantic, log

## Side by side

| | ai-memory | codex |
|---|---|---|
| Size | 653,695 lines written, 418 code files | 2,320,674 lines written, 4,216 code files |
| Who writes it | 37.4% of its commits signed by AI. With Claude Code, Cursor, Codex, Gemini CLI, and GitHub Copilot | 2.8% of its commits signed by AI. With Codex, Claude Code, and GitHub Copilot |
| Activity | Last push November 8, 2026, 3,915 commits, 15,357 stars | Last push November 4, 2026, 13,099 commits, 133,103 stars |
| Tests | 248 test files. 27.5% 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, ai-memory or codex?

codex, with 2,320,674 lines written; ai-memory has 653,695.

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

### Which has more GitHub stars, ai-memory or codex?

codex, with 133,103 stars; ai-memory has 15,357.

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

### Which has more tests, ai-memory or codex?

codex, with 2,448 test files; ai-memory has 248.

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

### Which was updated more recently, ai-memory or codex?

ai-memory: its last push was on November 8, 2026, and codex's on November 4, 2026.

The proof: [akitaonrails/ai-memory's commits on GitHub](https://github.com/akitaonrails/ai-memory/commits)

### Which has more commits signed by AI, ai-memory or codex?

ai-memory: an AI signed 37.4% of its commits, with Claude Code, Cursor, Codex, Gemini CLI, and GitHub Copilot; in codex, 2.8%.

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

## Sources

- akitaonrails/ai-memory: Read on November 8, 2026, at commit fec76f1 (https://github.com/akitaonrails/ai-memory/tree/fec76f18c15835bb2dc5c2be3081ce4db0c1270e)
- 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.