Codex is not sold separately, it is bundled with ChatGPT Go/Plus/Pro plans.
View Change History
2026-08-05~2026-10-03Routine checks ran 13 times; no price or plan changes
2026-09-16~2026-10-02Automated checks could not be matched line by line with the official site 17 times (page redesign, region-based pricing or usage-based billing); not judged to be a price change; the verified date was not updated, pending manual review
Continuously re-checked, every fact dated
Book editions on Amazon
Explore two language/cover editions about AI agents and AI work workflows. Author: AM&PM Editorial Team.
OpenAI's AI coding agent can run software engineering tasks (coding, bug fixing, refactoring) independently in a cloud environment, supporting CLI, web, desktop app, and IDE integration (VS Code, JetBrains, Xcode)
Free Version Limitations
A free ChatGPT account can use Codex, but with Limited access; the CLI version can be used with your own API key, and the fee is based on API usage.
Available Models And Quantity
Model
Free quota
Calculate Time Window
Description
Codex (included in ChatGPT)
Limited access
-
The CLI version is available with its own API key and pay-as-you-go pricing
Free Usage Limit
Features
Free quota
Description
Codex access
Limited
A free ChatGPT account is available, with limited functionality
Codex maximum usage. The official personal plan is currently divided into two tiers: US$100/month = 5 times Plus quota, US$200/month = 20 times Plus quota. [Checked]As of 2026-08-11, upon re-examination, all four official entrances, openai.com/codex/, openai.com/chatgpt/pricing/, chatgpt.com/pricing/, and help.openai.com, returned HTTP 403 (access denied, not 404 not found), and multiple retry paths were still unable to access directly. This information is verified through multiple independent third-party sources, not from the official website's first-hand page, and the actual content is subject to OpenAI's official announcement.
Which Model
Codex maximum quota
Usage Quota
5-20 times Plus quota
This Plan Includes
Maximum Codex usage
What Sets Us Apart
US$100/month (5 times) or US$200/month (20 times), as of 2026-08-11, all four official entrances showed 403 errors, this information is from a third-party cross-check.
Launched in May 2025 and continuously updated rapidly in 2026. Features: cloud-based parallel execution of multiple tasks, built-in worktree, and integratable with ChatGPT. Free version is available but has a quota limit.
Looking for Codex deals, discounts or promo codes? We check the official site automatically every day, review changes by hand, and date-stamp every entry.
