That's not their stated position, obviously it's hard to verify but from there official stance: "GitHub Copilot is powered by OpenAI Codex, a new AI system cre

That's not their stated position, obviously it's hard to verify but from there official stance: "GitHub Copilot is powered by OpenAI Codex, a new AI system created by OpenAI. It has been trained on a selection of English language and source code from publicly available sources, including code in public repositories on GitHub."