OpenAI initially scraped the web and later formed partnerships to train on licensed data. Now, they claim that DeepSeek was trained on their models. However, DeepSeek couldn't use these models for free and had to pay API fees to OpenAI. From a legal standpoint, this could be seen as a violation of the terms and conditions. While I may be mistaken, it's unclear how DeepSeek could have trained their models without compensating OpenAI. Basically, OpenAI is saying machines can't learn from their outputs as humans do.