Codex CLI

AI-powered terminal tool

Lightweight coding agent that runs in your terminal - openai/codex

Best for: Developers and software engineers

Last verified: 2026-02-17

Visit Codex CLISee alternatives Pricing

🖥️ Desktop⚡ API🌐 Web

FreeCode Assistant

Overview

Lightweight coding agent that runs in your terminal npm i -g @openai/codexor brew install --cask codex Codex CLI is a coding agent from OpenAI that runs locally on your computer.

Key features

Free for public repositories
Codex CLI offers code review and optimization suggestions
Multi-language programming support in Codex CLI
Unit test generation
AI-powered code completion and suggestions
Context-aware completions from codebase
Code debugging and error detection
Codex CLI provides a developer API for custom integrations

Codex CLI pricing

Free

Codex CLI offers free pricing. A free plan is available to get started. Visit the official website for the most up-to-date pricing details.

View pricingPricing verified Feb 2026

What you can do with Codex CLI

✓Write and complete code faster with AI suggestions
✓Use Codex CLI to debug and fix programming errors
✓Use Codex CLI to generate boilerplate and repetitive code
✓Translate code between programming languages
✓Integrate Codex CLI via API into existing workflows
✓Get started free and upgrade as your needs grow

Pros and cons

Pros

Codex CLI dramatically speeds up coding workflow
Reduces bugs by catching errors early
Helps learn new languages and frameworks
Codex CLI offers a free plan to get started

Cons

Suggestions may not always be optimal or secure
Can reduce deep understanding of code logic

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Frequently asked questions

What is Codex CLI?

Codex CLI is lightweight coding agent that runs in your terminal - openai/codex. It falls under the Code Assistant category of AI tools.

Is Codex CLI free to use?

Yes, Codex CLI offers a free tier to get started. Some advanced features may require upgrading to a paid plan.

How much does Codex CLI cost?

Codex CLI offers the following plans: Free: $0 (monthly), Plan 1: $0.18 (monthly), Enterprise: $0 (monthly). Prices may change, so visit the official website for the most current pricing.

What are the best Codex CLI alternatives?

There are several alternatives to Codex CLI in the Code Assistant space. Check our Codex CLI alternatives page for a detailed comparison of similar tools with features, pricing, and user reviews.

What is Codex CLI best for?

Codex CLI is best for developers and software engineers. It excels in the Code Assistant category.

What platforms does Codex CLI support?

Codex CLI is available on Desktop, API, Web. This makes it accessible across different devices and workflows.