You can often get a model to reveal it's system prompt and all of the previous text it can see. For example, I've gotten GPT4 or Claude to show me all the data Perplexity feeds it from a web search that it uses to generate the answer.

This doesn't show you any earlier prompts or texts that were deleted before it generated it's final answer, but it is informative to anyone who wants to learn how to recreate a Perplexity-like product.