For all that’s leaked about the sizes and architectures of the advanced large language models developed by OpenAI and its ilk, we still don’t know what data they were trained on.A pessimist might say that’s because of the numerous lawsuits LLM developers would face if the amount of copyrighted content they were using was revealed, but a more generous explanation would be that it’s because the makeup of their training data is these companies’ secret sauce.The importance of data explains why Ari ...