Codex vs GitHub Copilot
Detailed comparison between Codex and GitHub Copilot. Which one to choose for your project?
C
Codex
4.5/5 · 0
G
GitHub Copilot
2.2/5 · 226
Compare features, prices and use cases below →
Head to Head
Codex
OpenAI's coding agent: CLI, IDE, cloud and GitHub, included with ChatGPT
4.5/5 Catalogue score: 4.5/5. No sourced user reviews.
Price
Free plan; From $20/mo Key features
- Delegate a task: Codex writes the code, runs tests, fixes failures and opens a pull request
- Terminal CLI, VS Code extension, cloud agent in ChatGPT and GitHub bot, your choice
- Each cloud task runs in an isolated container, several tasks in parallel without conflicts
- Open-source terminal client, steerable via AGENTS.md and extensible through MCP
GitHub Copilot
The AI code assistant built into your IDE
2.2/5 Third-party rating: 2.2/5 (226).
Price
Free plan; From $10/mo Key features
- Real-time contextual code suggestions
- AI chat in your IDE to ask questions
- VS Code, JetBrains, Neovim, Visual Studio
- Automatic unit test generation
Codex vs GitHub Copilot, Specs at a glance
| Criteria | Codex | GitHub Copilot |
|---|---|---|
| Rating | Catalogue score: 4.5/5. No sourced user reviews. | Third-party rating: 2.2/5 (226). |
| Pricing model | freemium | freemium |
| Starting price | Free plan; From $20/mo | Free plan; From $10/mo |
| Free plan | Yes | Yes |
| Best for | Developers on ChatGPT plans who want to delegate complete coding tasks (fixes, features, reviews, PRs) to an autonomous agent | Developers who want AI assistance without changing their workflow |
Codex, Pros and Cons
Pros
- Included with ChatGPT: no extra cost for Plus/Pro subscribers
- Parallel execution in isolated sandboxes, automatic pull requests
- Open-source, configurable CLI (AGENTS.md, MCP)
- Four surfaces covered: terminal, IDE, cloud, GitHub
Cons
- The best models stay tied to the OpenAI ecosystem
- Usage caps per rolling window depending on the plan
- Younger CLI than rivals like Claude Code or Aider
GitHub Copilot, Pros and Cons
Pros
- Perfect integration into the GitHub ecosystem
- Support for virtually all languages
- Free plan for students and open source
- Largest training corpus (GitHub repos)
- Copilot Workspace for complex tasks
Cons
- Less precise than Cursor for multi-file editing
- Suggestions parfois hors contexte
- Intellectual property questions about generated code
- Requires GitHub subscription for best features
Frequently asked questions
Which one is cheaper: Codex or GitHub Copilot?
Codex: Free plan; From $20/mo. GitHub Copilot: Free plan; From $10/mo. GitHub Copilot has the lower listed paid entry price.
Does Codex or GitHub Copilot offer a free plan?
Yes, both Codex and GitHub Copilot offer a free plan.
Which has the higher user rating, Codex or GitHub Copilot?
Codex: Catalogue score: 4.5/5. No sourced user reviews. GitHub Copilot: Third-party rating: 2.2/5 (226). Choose according to your use case; the rating alone does not determine the best fit.
What is Codex best for compared to GitHub Copilot?
Codex is best for developers on chatgpt plans who want to delegate complete coding tasks (fixes, features, reviews, prs) to an autonomous agent. GitHub Copilot is best for developers who want ai assistance without changing their workflow. Choose based on which use case matches your needs.
Should I choose Codex or GitHub Copilot?
Codex: Developers on ChatGPT plans who want to delegate complete coding tasks (fixes, features, reviews, PRs) to an autonomous agent. GitHub Copilot: Developers who want AI assistance without changing their workflow. Choose according to your use case; the rating alone does not determine the best fit.
Choose according to your use case; the rating alone does not determine the best fit.
