I asked recently on social media if anyone knows if there has been a legal decision regarding if GPL source code that was used for training an LLM will taint all that LLMs output with the same GPL licence. So far nothing has come up but I think people are wanting to know the answers.

It has been said that Microsoft indemnifies people using its LLM tools against copyright and patent issues, but I don't know if it applies to LLM output which might/should be GPL licenced.