# OpenAI Codex review (2026)

> OpenAI's coding agent.

Codex is OpenAI's coding agent, available in the cloud, a command-line tool and IDEs, included with ChatGPT plans.

**Best for:** ChatGPT subscribers who want a coding agent.

**Make AI Games score:** 68/100 (facts-based; hands-on test pending)

| Fact | Value |
|---|---|
| Website | https://openai.com/codex |
| Status | Active |
| Categories | Coding & engine AI |
| Pricing | Limited free tier; From $8/mo |
| Commercial use | Allowed |
| Engines | Unverified |
| Exports | Source code |
| Skill level | advanced |
| Last verified | 2026-10-21 |

## Score breakdown

- Accessibility: 71/100
- Output & integration: 44/100
- Commercial rights: 100/100
- Value: 60/100
- Maturity: 100/100
- Game focus: 40/100
- Features: 80/100

## Features

- MCP support: Yes
- Runs or playtests the game: Yes (Tests browser games in a live browser using its Playwright skill)
- Choose the AI model: Yes (model / model_provider keys in config.toml; -m flag)
- Local or offline models: Yes (--oss mode runs local models (e.g. gpt-oss via Ollama or LM Studio))

## Pricing plans

- Free: free (Limited trial access to Codex)
- Plus: $20/mo (Codex web, CLI, IDE; cloud code review and Slack)
- Pro: $100/mo (From $100/mo; 5x or 20x Plus usage limits)
- Business: custom (Pay-as-you-go; standard or usage-based Codex seats)

Pricing note: Limited Codex on Free and Go ($8/mo); expanded on Plus $20/mo; Pro tiers $100-$500/mo; Codex Cloud needs Plus or higher

## Sources

- https://openai.com/codex
- https://chatgpt.com/codex/pricing/
- https://openai.com/index/introducing-chatgpt-go/
- https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-plan
- https://developers.openai.com/codex/pricing
- https://developers.openai.com/codex/codex-manual.md
- https://help.openai.com/en/articles/20001106-codex-rate-card-2
- https://developers.openai.com/codex/mcp
- https://developers.openai.com/zh-Hans/docs/config-file/config-sample
- https://docs.ollama.com/codex
- https://developers.openai.com/codex/use-cases/browser-games

Canonical: https://makeaigames.com/tools/openai-codex