Verification
Every guide carries a verification tag with one of two states.
- Checked against official docs. We compared every command and claim with OpenAI’s current documentation, the openai/codex README, or the named first-party source, on the date shown.
- Tested hands-on. A person also ran the steps on the operating systems listed in the tag, with the Codex version shown.
We don’t upgrade a page from the first state to the second without doing the test. When OpenAI’s docs and our experience disagree, we say so on the page and link to the official source.
Statements that are general computing knowledge rather than Codex-specific, such as how PATH works, are marked as such in the tag.
Sources
We prefer, in order: OpenAI’s Codex documentation, the openai/codex repository, first-party platform docs (Microsoft, Apple, JetBrains, npm, Homebrew), and only then reputable third parties. Each page lists its sources.
Corrections
If something is wrong or out of date, tell us. Include the page URL, what’s wrong, and your OS and codex --version. We review reports and update the page and its check date. Significant corrections are noted on the page.
Money
This site may later earn money from clearly labelled sponsorships or affiliate links on comparison pages. If it does, those pages will disclose it at the top. Payment never changes a recommendation, and we will never link to unofficial downloads for money.
AI assistance
We may use AI tools to help draft or update pages. Every published page is reviewed and checked against its sources by a person before it goes live.