OpenAI Codex vs GitHub Copilot
OpenAI Codex and GitHub Copilot are two of the most-compared Coding tools. OpenAI Codex starts at $20/mo and GitHub Copilot at $10/mo — and they differ in features, ratings, and the use cases they suit best. This side-by-side breakdown covers pricing, key features, the pros and cons of each, and a clear verdict to help you pick the right one.
Pros & cons
Pros
- ✓Runs everywhere: desktop app, CLI, IDE and cloud
- ✓Parallel agents with built-in worktrees
- ✓Background automations (issue triage, CI/CD, alerts)
- ✓Code review that catches subtle bugs
- ✓Skills adapt it to team standards
- ✓Included with ChatGPT plans — no extra license
Cons
- ✗Requires a ChatGPT subscription; heavy parallel work realistically needs Pro at $200/month
- ✗Cloud environment setup takes time
- ✗Younger ecosystem than GitHub Copilot
Pros
- ✓Works inside your existing IDE (no new editor)
- ✓Cheap entry ($10 Pro)
- ✓Multiple models (Claude, GPT, Gemini)
- ✓Deep GitHub integration
- ✓Generous free tier (2,000 completions/month)
Cons
- ✗Less of an all-in-one agent UX than Cursor
- ✗Premium models and higher usage gated to Pro+
- ✗Best experience tied to the GitHub ecosystem
The verdict
OpenAI Codex and GitHub Copilot are close competitors, but a few differences stand out. GitHub Copilot is the more affordable option at $10/mo — about 50% less than OpenAI Codex at $20/mo. Both share an identical 4.6 rating. Bottom line: choose OpenAI Codex if you prefer its overall feature set; choose GitHub Copilot if you want to spend less.
Which one should you choose?
When to choose OpenAI Codex
OpenAI's agentic coding workspace: app, CLI, IDE and cloud agents
Pick OpenAI Codex if you prefer its overall feature set.
When to choose GitHub Copilot
The AI pair programmer in your IDE
Pick GitHub Copilot if you want to spend less.
Frequently asked questions
What's the difference between OpenAI Codex and GitHub Copilot?+
OpenAI Codex: Codex is OpenAI's coding agent, powered by your ChatGPT account. GitHub Copilot: GitHub Copilot is an AI coding assistant from GitHub (Microsoft) that plugs into your existing IDE — VS Code, Visual Studio, JetBrains, and Neovim. The biggest differences come down to price and features.
Which is cheaper, OpenAI Codex or GitHub Copilot?+
GitHub Copilot is cheaper at $10/mo — about 50% less than OpenAI Codex at $20/mo.
Which has the higher rating?+
Both share the same 4.6 rating, so quality is a wash — decide on price and features.
Does OpenAI Codex or GitHub Copilot have a free plan?+
Neither offers a free plan. GitHub Copilot is the lower-cost paid option at $10/mo.
Which is better for Coding?+
For Coding, GitHub Copilot is the stronger overall pick. Choose OpenAI Codex instead if you prefer its overall feature set.