OpenAI Codex at a glance

Made by: OpenAI
Starting price: $0 / $8/mo (Free / Go)
Free plan: Yes
Platforms: Web, Desktop, iOS, API
Best for: ChatGPT subscribers; Developers who delegate tasks to a cloud agent
Prices checked: November 14, 2026

What is OpenAI Codex?

OpenAI Codex is OpenAI's coding agent. It handles tasks such as building features, fixing bugs and answering questions about a codebase, and it runs in several places: Codex on the web (cloud tasks), the Codex CLI, an IDE extension, the ChatGPT desktop app and iOS. On paid plans it can also review pull requests automatically on GitHub and work from Slack.

Codex is bundled into ChatGPT rather than priced on its own. As of November 14, 2026 it is included in Free ($0) and Go ($8/month) for light desktop-app use, Plus ($20/month), Pro (from $100/month, with $200 and $500 tiers), Business ($25 per user monthly, or $20 billed yearly) and Enterprise/Edu; developers can also pay per use with an API key, without cloud features. The main drawback is that local and cloud tasks share one allowance with weekly limits, so the number of messages you get depends on the model and your plan.

Key Features

Cloud coding tasksCodex CLIIDE extensionGitHub code reviewSlack integrationDesktop and iOS apps

Integrations

Developer

GitHub

Communication

Slack

IDE

VS Code

How to Use OpenAI Codex

1Sign in with your ChatGPT account

2Install the Codex CLI or IDE extension, or open Codex on the web

3Connect your GitHub repository

4Describe a task and let Codex work on it

5Review the diff or pull request it produces

Who is OpenAI Codex for?

✅ Best For

ChatGPT subscribers
Developers who delegate tasks to a cloud agent
Teams reviewing PRs on GitHub

❌ Not For

Users who need unlimited local use at a fixed price

OpenAI Codex pros and cons

👍 Pros

Included in every ChatGPT plan, with light use on Free
Works on the web, CLI, IDE, desktop and iOS
Automatic code review on GitHub

👎 Cons

Local and cloud tasks share one allowance
Weekly limits can apply
Cloud features need a ChatGPT plan, not just an API key

Reviews

No reviews yet. Be the first to review OpenAI Codex!

Pricing

Is OpenAI Codex free? Yes, there is a free plan. Paid plans start at $0 / $8/mo (Free / Go).

Free / Go$0 / $8/mo

✓Light use in the desktop app

Plus$20/mo

✓Web
✓CLI
✓IDE extension
✓iOS; code review and Slack

ProFrom $100/mo

✓$100
✓$200 or $500 tiers; no five-hour limit

Business$25/user/mo ($20 billed yearly)

✓2+ users

API keyPay per use

✓CLI
✓SDK and IDE; no cloud features

Prices checked November 14, 2026 on the official OpenAI Codex pricing page. Plans change often, so confirm before you buy.

Prompts to Try

Implement the empty-state UI for the dashboard

Find and fix the memory leak in the worker

Review this pull request for security issues

Use Cases

Feature implementation

Bug fixing

Automated code review

Codebase Q&A

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