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openai/codex

Lightweight coding agent that runs in your terminal

Rust ◇ developer-tools Apache-2.0
★126.7KSTARS
⑂19.8KFORKS
!19,113ISSUES
🏆#55GLOBAL RANK
🔥6DAYS TRENDING
🚀
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Star History

Continuous Observations
Interactive star growth chart for openai/codex
CSV

Momentum

+3.2K

STARS · LAST 30 DAYS

106

PER DAY

#4

MOST-STARRED Rust

Window7 days30 days90 days
Stars gained+742+3.2K+9.5K
Per day106106106
Forks gained+99+396+989

codex gained 3.2K stars in the last 30 days, about 106 a day, and now has 126.7K. It is about 1 year old and has averaged roughly 126.7K stars a year. It ranks #4 among Rust repositories and #55 across all languages on GitHubRepo.

Trending Record

codex has maintained a continuous presence across global trending indexes, peaking at #50. Below is the 30-day activity profile:

💡 Overview

codex is an open-source project written in Rust: Lightweight coding agent that runs in your terminal.

Engineered for speed, consistency, and developer ease, it solves common hurdles in Rust. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.

⚡ Key Features

1

Optimized execution pipeline written in Rust for predictable speed.

2

Zero-friction configuration with comprehensive sensible defaults out of the box.

3

Cross-platform runtime support across Linux, macOS, and Windows environments.

4

Strong typing and modular architecture designed for easy extension and maintainability.

5

Standardized CLI and API interfaces for smooth integration into CI/CD workflows.

6

Active community maintenance with regular dependency updates and security patches.

📥 Installation

terminal
$ cargo install codex

⚙ System Requirements

Platforms

  • • macOS
  • • Linux
  • • Windows

Runtime & Dependencies

Rust toolchain (rustc / cargo >= 1.70)

Architecture

x86_64, ARM64 (Apple Silicon & Graviton)

🧠 How It Works

codex coordinates its core functionality through a modular Rust pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.

🎯 Production Use Cases

Production System Integration

Embed codex into Rust backend services to handle core application logic.

CI/CD Automated Pipelines

Run automated validation, builds, and integration suites during deployments.

Developer Tooling & Workflows

Accelerate developer onboarding with pre-configured project utilities.

Open Source Extension

Fork and customize internal modules under the repository's open Apache-2.0 license.

🚀 Getting Started

1

Install codex using your package manager: `cargo install codex`

2

Initialize your project workspace or configuration file for codex.

3

Import codex into your codebase or invoke it directly from your terminal.

4

Execute your test suite or run `codex --help` to verify successful setup.

👍 Strengths

Active community backing with 126,317 GitHub stars and verified adoption.
Permissive open-source distribution under the Apache-2.0 license.
Built in Rust for high execution speed and developer familiarity.
Cross-platform compatibility across modern Linux, macOS, and Windows environments.
Clean modular design allowing flexible configuration and pipeline integration.

⚠️ Considerations

Requires familiarity with Rust and modern CLI workflows.
Ecosystem extensions may require manual configuration depending on environment constraints.
Active development roadmap means breaking API changes may occur across major versions.

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👥 Who Should Use This

Developers and engineering teams building with Rust, seeking reliable, tested, and actively maintained tooling for production workloads.

🏆 Nearby in the Rankings

openai/codex is currently ranked #55 by stars across every repository tracked on GitHubRepo. These are adjacent projects:

RankRepositoryLanguageStarsAction
#50 nextlevelbuilder/ui-ux-pro-max-skill Python ★ 131K Compare ↗
#51 ggml-org/llama.cpp C++ ★ 129.8K Compare ↗
#52 Chalarangelo/30-seconds-of-code JavaScript ★ 129.2K Compare ↗
#53 kubernetes/kubernetes Go ★ 128K Compare ↗
#54 react/react-native C++ ★ 126.8K Compare ↗
#55 openai/codex This Project Rust ★ 126.7K
#56 shadcn-ui/ui TypeScript ★ 124.7K Compare ↗
#57 rustdesk/rustdesk Rust ★ 124.6K Compare ↗
#58 Graphify-Labs/graphify Python ★ 121.8K Compare ↗
#59 microsoft/generative-ai-for-beginners Jupyter Notebook ★ 120.7K Compare ↗
#60 rust-lang/rust Rust ★ 119.2K Compare ↗

Frequently Asked Questions

What does codex do? +

Lightweight coding agent that runs in your terminal

What language is codex written in? +

The primary language is Rust. Topics include: software.

Is codex actively maintained? +

Yes, the last recorded push was on Sep 27, 2026 with 19,113 open issues being tracked.

How many stars does codex have? +

codex has 126,685 stars and 19,779 forks on GitHub.

How does codex rank among GitHub repositories? +

With 126,685 stars, openai/codex is ranked #55 globally across all repositories tracked on GitHubRepo and #4 among Rust projects.

What license is codex distributed under? +

The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.

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