Many comments pointing out this is part of the response rather than the prompt.

But the whole speech is the response. What do you call the bits at the start "Certainly, I can write a speech in this style" type thing, and at the end "Would you like to learn more about political speech writing?"

Perhaps something like "AI tells" but perhaps there's already an industry term.

Edit: hadn't watched the video, this is the former "response to prompt" type tell.