OpenAI Codex: pricing, free plan, features & alternatives (2026)

What is OpenAI Codex?

OpenAI Codex is a coding agent from OpenAI, available in ChatGPT, as a cloud service, as an IDE extension and as a command-line tool (CLI). It is designed to take on real engineering work, such as hard-to-find bugs, complex refactors, new features, test generation and reviewing pull requests.

Codex can run many agents in parallel, use computer and browser tools to verify its own work, and keep tasks running in cloud environments even after you close your laptop. You can follow progress, steer the agents, review results in one place and pick up a task from another device. Plugins connect Codex to other tools so it can act across your apps.

Key features

Parallel multi-agent workflows with progress tracking
Cloud environments for reusable repo setups that keep tasks running
Automatic pull request reviews with findings and answers to questions
Plugins to connect Codex to other tools and apps
Same agent across ChatGPT, IDE extension and CLI, linked to your ChatGPT account
Refactoring, feature building and test generation

Who is it for

Software engineers
Engineering teams reviewing and shipping code
Software architects
Mobile and backend developers

How to get started with OpenAI Codex

Log in to a ChatGPT account on Plus, Pro, or Business.
Connect your repository in Codex within ChatGPT or install the IDE extension.
Describe an engineering task, such as a bug fix or new feature, and run the agent.

Choose it if

Your team needs an agent for complex engineering tasks, not just code suggestions
You want tasks to keep running in the cloud while your laptop is off
You need automatic pull request review and test generation

Skip it if

You are looking for a free tool, since there is no free plan
You need a Polish-language interface, which this tool does not offer

Pros and cons

Pros

Works across ChatGPT, editor and terminal with one account
Runs tasks in the cloud and can be resumed from another device

Cons

Usage limits apply to each plan
Business plan pricing is per user and billed annually for 2+ seats

OpenAI Codex pricing

Plan	Price	Includes
Plus	99.99 PLN / month	Includes Codex usage for focused coding sessions each week
Pro	439 PLN / month	Higher usage limits for full workdays across multiple projects
Business	71 PLN / month	Per user per month, for 2+ seats billed annually; shared workspace with admin controls; usage unlimited subject to abuse guardrails

Prices copied from OpenAI Codex pricing, checked October 12, 2026. Currency as shown by the vendor; taxes may apply.

OpenAI Codex pricing details →