Pick GitHub Copilot if
developers already in GitHub who want completions and chat without switching to a separate AI IDE.
Read the GitHub Copilot pageGitHub Copilot vs OpenAI Codex
Our take
Pick GitHub Copilot if developers already in GitHub who want completions and chat without switching to a separate AI IDE. Pick OpenAI Codex if developers already on a ChatGPT plan who want one agent across desktop, CLI, and GitHub review. Skip GitHub Copilot if teams that cannot send code to GitHub’s model pool, or users who want a local-only model (Ollama).
Best for
GitHub Copilot Code in a real editor
OpenAI Codex A reviewable coding session on an OpenAI account
Free plan
GitHub Copilot $0 · limited completions and chat
OpenAI Codex $0 · /month. GPT-6 Luna at Standard speed in the desktop app (rollout)
Lowest paid
GitHub Copilot Pro $10/mo
OpenAI Codex Plus $20/mo
Next step up
GitHub Copilot Pro+ $39/mo
OpenAI Codex Business $25
Coding agent
GitHub Copilot Agent + Tab inside the editor
OpenAI Codex Codex
Runs where
GitHub Copilot
OpenAI Codex Hosted
Watch out
GitHub Copilot Flex credits are not unlimited Agent
OpenAI Codex Codex and ChatGPT Work share the same usage pool
Last checked
GitHub Copilot 2026-10-19 · github.com/features/copilot
OpenAI Codex 2026-10-22 · learn.chatgpt.com/docs/pricing
Which one, then?
Pick OpenAI Codex if
developers already on a ChatGPT plan who want one agent across desktop, CLI, and GitHub review.
Read the OpenAI Codex page