OpenAI Codex
OpenAI Codex is an AI coding partner for engineering work such as finding bugs, refactoring code, and building features.
What OpenAI Codex is
OpenAI Codex is an AI coding partner for engineering work such as finding bugs, refactoring code, and building features. It combines chat assistance, a coding agent, codebase indexing, and terminal access. Codex can run multiple agents in parallel, with tools to follow progress, steer work, and review results. It can keep tasks running in the cloud after a laptop is closed, using reusable cloud environments for each repository. It can also automatically review pull requests, surface findings, and answer questions. Codex is available through ChatGPT, an IDE extension, the CLI, and the web, connected by a ChatGPT account. Listed IDEs include Visual Studio Code and Insiders, Cursor, Windsurf, Xcode, and JetBrains IDEs; listed platforms are extension, Linux, macOS, web, and Windows. Plugins connect tools and add specialized capabilities to workflows. The Free ChatGPT plan includes limited Codex access. Paid plans include Plus at $20 a month, Pro at $100 a month, and Business at $20 a month per user for two or more seats, billed annually. Business Standard, Business Premium, and Enterprise are also listed, with no prices provided for those plans.
Good
- Combines chat, coding-agent, indexing, and terminal capabilities.
- Can run parallel agents and continue tasks in the cloud.
- Can automatically review pull requests.
- Works through ChatGPT, IDE extension, CLI, and web.
- Free ChatGPT plan includes limited access.
Watch out
- Free ChatGPT access is limited.
- Plus costs $20 a month.
- Pro costs $100 a month.
- Business costs $20 a month per user and requires two or more seats, billed annually.
Who it suits
Codex suits developers who want AI assistance with code changes, parallel tasks, or pull request review. Its Business offerings are aimed at teams working across repositories and include shared workspace and admin controls.
Verdict
Codex brings coding assistance, agent workflows, cloud tasks, and pull request review across several interfaces. The Free ChatGPT plan offers limited access, while the listed paid plans have distinct prices and seat requirements.
Plans and prices
From OpenAI Codex's own pricing page, checked 20 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Business Standard | — | 2–200 employees · Unlimited subject to abuse guardrails |
| Business Premium | — | 2–200 employees · Unlimited subject to abuse guardrails |
| Enterprise | — | Enterprise-grade security and controls · 24/7 priority support · Custom legal terms and SLAs |
| Business | $20 a month | Unlimited subject to abuse guardrails · $20 / user / month; for 2+ seats, billed annually |
| Plus | $20 a month | Focused coding sessions each week · $20 / month |
| Pro | $100 a month | Higher usage limits for full workdays across multiple projects · $100 / month |
The facts
Each one read from OpenAI Codex's own pages, with the date it was checked.
What it does
- Business controls
- The Codex Business offering is described as a shared workspace with admin controls and flexible pricing for teams working across repositories.checked 11 Oct 2026
- Business data
- OpenAI says it will not train on ChatGPT Business workspace data.checked 11 Oct 2026
- Chat assistance
- Yeschecked 20 Sep 2026
- Cloud tasks
- Codex continues tasks in the cloud after the user closes their laptop, using reusable cloud environments for each repository.checked 11 Oct 2026
- Codebase indexing
- Yeschecked 20 Sep 2026
- Code review
- Codex can automatically review pull requests, surface findings, and answer questions.checked 11 Oct 2026
- Coding agent
- Yeschecked 20 Sep 2026
- Parallel agents
- Codex can run many agents in parallel and lets users follow progress, steer agents, and review results in one place.checked 11 Oct 2026
- Purpose
- Codex is an AI coding partner for engineering work such as finding bugs, refactoring, and building features.checked 11 Oct 2026
- Security
- OpenAI says infrastructure for its products uses encryption in transit and at rest, change management, and strict access controls.checked 11 Oct 2026
- Support
- OpenAI links users to its Help Center and service status page for support resources.checked 11 Oct 2026
- Supported IDEs
- Visual Studio Code; Cursor; Windsurf; Visual Studio Code Insiders; Xcode; JetBrains IDEschecked 20 Sep 2026
- Terminal access
- Yeschecked 20 Sep 2026
- Ways to use
- OpenAI says Codex is available across ChatGPT, an IDE extension, the CLI, and the web, connected by a ChatGPT account.checked 11 Oct 2026
- Workflow integrations
- Codex supports plugins that connect tools and add specialized capabilities to its workflows.checked 11 Oct 2026
The company
- Founded
- 2015checked 28 Sep 2026
- Maker
- OpenAI consists of the nonprofit OpenAI Foundation and the for-profit OpenAI Group, which operates as a public benefit corporation.checked 11 Oct 2026
Money
- Free access
- The Free ChatGPT plan includes limited Codex access.checked 11 Oct 2026
- Free plan
- Nochecked 20 Sep 2026
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