GitHub vs OpenAI Codex
Which is better in 2026? Five scores, side by side.
GitHub is the better app overall, scoring 9.0 to 8.7. GitHub wins on 5 of the 5 scores, OpenAI Codex on 0.
Developers and teams who want hosting, code review and CI in one place
ChatGPT subscribers who want a capable coding agent at no extra cost
Score by score
The details
| Feature | GitHub | OpenAI Codex |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Category rank | #4 of 13 | #8 of 13 |
| Developer | GitHub (Microsoft) | OpenAI |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | ✓ |
| Android | ✓ | ✓ |
| Mac | ✓ | ✓ |
| Windows | ✓ | ✓ |
| Linux | — | ✓ |
| Web | ✓ | ✓ |
Common questions
Is GitHub better than OpenAI Codex?
GitHub is the better app overall, scoring 9.0 to 8.7. GitHub wins on 5 of the 5 scores, OpenAI Codex on 0.
Which is cheaper, GitHub or OpenAI Codex?
GitHub: Free plan with unlimited private repos; Team from $4/user/month. OpenAI Codex: Included in every ChatGPT plan, even Free; Plus is $20 a month and Pro from $100. On value for money, GitHub scores higher.
Do GitHub and OpenAI Codex work on the same devices?
Only OpenAI Codex runs on Linux.
Which is more private, GitHub or OpenAI Codex?
GitHub scores higher on privacy (7.5/10). The iPhone app label links only a device ID to you, with crash data not linked. No ads. Secret scanning can stop leaked keys before they are pushed, and Copilot features process your code in the cloud.
Strengths and weaknesses
GitHub
- Industry-standard home for code and open source
- Actions automates builds, tests and deploys
- Generous free plan with unlimited private repos
- Feature sprawl makes settings hard to navigate
- Outages can stall your whole team's workflow
GitHub is the default home for open source and many company codebases, and its tools are hard to beat. Pull requests, code review, Issues and Projects cover the full workflow, Actions runs your builds, and stacked pull requests are now built in. On paid Copilot plans, AI reviews your code and a cloud agent opens pull requests for you. The catch is growing complexity, and an outage can stall your whole team.
Full GitHub reviewOpenAI Codex
- Included even with a free ChatGPT account
- Open-source CLI under the Apache 2.0 licence
- Runs on Mac, Windows and Linux
- Free and Go plans are meant for light tasks only
- Merged ChatGPT desktop app drew complaints of confusion
- Personal-plan tasks can train models unless you opt out
Codex is OpenAI's coding agent, and it now comes with every ChatGPT plan. Use it in the ChatGPT desktop app, the open-source Codex CLI, your IDE or in the cloud, where it can work on several tasks at once and review pull requests on GitHub. You can keep an eye on sessions from the ChatGPT phone app too. July's merge of the Codex app into ChatGPT confused plenty of people, and personal-plan tasks can train models unless you opt out.
Full OpenAI Codex review
