> This is a fair point, but you can say this about any other interesting model. Is that piece of text generated by GPT-NeoX-20B (which is a fully free and open

> This is a fair point, but you can say this about any other interesting model. Is that piece of text generated by GPT-NeoX-20B (which is a fully free and open model trained by essentially hobbyists) illegal to use because it might infringe on someone else's copyright? Again, you misunderstand. Copyright violations don't occur just by using the system, and as I noted, it's not a problem to use ML models. The actual output content is what matters. In your example, yes, absolutely, if you used some editor feature that spit that code out verbatim, sans license adherence, you will be violating copyright. The issue isn't specific to copilot beyond the fact that Github has created and offered this model trained on source code and begun selling it as a product. TL;DR: Is it illegal to use it? Of course not. Is it going to get you sued for blindly taking its output, packaging it and selling it? Possibly. If I were trying to manage the risk to my business, I certainly wouldn't be allowing developers to use it.