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Codex vs GitHub Copilot
Codex comes with ChatGPT; Copilot comes with GitHub and lives in your editor. If your team is on GitHub, Copilot is the simpler fit; if you already pay for ChatGPT, Codex costs nothing extra.
At a glance
| Fact | Codex | GitHub Copilot |
|---|---|---|
| Made by | OpenAI | GitHub |
| What it is | OpenAI's coding agent for writing, reviewing and shipping code. | GitHub's AI pair programmer and coding agent. |
| Price | Included with ChatGPT plans, with limits on Free | Free plan, paid from $10/user/month |
| Runs on | macOS, Windows, Linux, Web, CLI | macOS, Windows, Web, CLI |
| Open source | No | No |
| Models | Not stated | Haiku 4.5, GPT-5 mini, Claude by Anthropic, OpenAI Codex |
| Last verified | October 14, 2026 | October 14, 2026 |
| Official site | openai.com/codex | github.com/features/copilot |
Where they differ
- Price: Codex is included with ChatGPT plans (limited on Free); Copilot has a free tier and Pro at $10/user/month.
- Where it runs: Codex as an app, CLI, IDE extension and cloud; Copilot in VS Code, Visual Studio, JetBrains, Neovim and Xcode, plus a CLI.
- Models: Copilot lets you use several, including OpenAI Codex and Claude models.
Which to pick
Choose Codex if you have ChatGPT and want parallel cloud tasks and automatic PR reviews.
Choose GitHub Copilot if you want completions and agents inside your current editor, tied to GitHub.
Keep looking
- Codex listing
- GitHub Copilot listing
- Codex alternatives
- GitHub Copilot alternatives
- Claude Code vs Codex
- Claude Code vs GitHub Copilot
- Codex vs Cursor
- Codex vs Hermes Agent
Facts from each maker's official pages, last verified October 14, 2026. How we verify.