Codex by OpenAI vs GitHub Copilot
A side-by-side comparison of Codex by OpenAI and GitHub Copilot — pricing, license, deployment, and where each tool wins.
Codex by OpenAI
openai.com
AI system that translates natural language to code, powered by GPT-3.
GitHub Copilot
github.com
GitHub Copilot uses the OpenAI Codex to suggest code and entire functions in real-time, right from your editor.
| Feature | Codex by OpenAI | GitHub Copilot |
|---|---|---|
| Pricing | Freemium | Freemium |
| Model | Freemium | Freemium |
| License | Proprietary | Proprietary |
| Deployment | Cloud | Cloud |
| Category | Code & Development | Code & Development |
| Self-hosted | ✕No | ✕No |
| Free tier | ✓Yes | ✓Yes |
Pick Codex by OpenAI if…
- ✓You prefer Codex by OpenAI's feature set or ecosystem fit.
Pick GitHub Copilot if…
- ✓You prefer GitHub Copilot's feature set or ecosystem fit.
Switch from Codex by OpenAI → GitHub Copilot
1–8hlow risk
Light lift — 1-8 engineering hours for a small team.
Export from Codex by OpenAI: Git history, JSON config
3 things to watch
- ⚠Re-grant SSH keys / OAuth
- ⚠Re-wire CI secrets
- ⚠Fewer tutorials online for GitHub Copilot — expect more trial-and-error
Switch from GitHub Copilot → Codex by OpenAI
1–4hlow risk
Light lift — 1-4 engineering hours for a small team.
Export from GitHub Copilot: Git history, JSON config
2 things to watch
- ⚠Re-grant SSH keys / OAuth
- ⚠Re-wire CI secrets