Pi provides an agent toolkit with a unified model API, agent loop, terminal UI, and coding command line.
Codex CLI
The Codex CLI repository provides a lightweight coding agent that runs in a terminal.

About Codex CLI
Codex CLI is an open-source coding agent from OpenAI that runs locally on a computer through a terminal. It can be installed with install scripts, npm, Homebrew, or downloadable binaries for macOS and Linux.
It can be used by signing in with a ChatGPT Plus, Pro, Business, Edu, or Enterprise plan, or with an API key that requires additional setup. Separate options are described for supported code editors, a desktop app, and a cloud-based web version.
Key features
- Runs locally on computer through terminal
- Installs via script on Mac, Linux, and Windows
- Installs via npm and Homebrew package managers
- Offers downloadable binaries for macOS and Linux
- Signs in with ChatGPT Plus, Pro, Business, Edu, Enterprise
- Supports API key use with additional setup
- Open source under Apache-2.0 License
- Multiple install options including npm, Homebrew, and binaries
- Works with several ChatGPT plan types
- API key use requires additional setup
Codex CLI at a glance
- Website
- github.com/openai/codex
- Category
- AI & Machine Learning › AI Coding Tools
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Codex CLI alternatives
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Use Open Interpreter as a coding agent with open language models for development work.
Continue offers developers an open-source coding agent for software development tasks.
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Codex CLI FAQ
How do I install Codex CLI on Mac or Linux?
How do I use Codex CLI with a ChatGPT plan?
How is Codex CLI different from other Codex options?
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