The AI is a technology called GPT-3 from OpenAI. You may have heard of it already; if not, you can think of GPT-3 as a really good autocomplete. Like, shockingly good.
https://www.ideo.com/blog/the-rules-of-brainstorming-change-when-ai-gets-involved-heres-how
I also recommend reading the article written entirely from the AI:
Headline: Are you scared yet, human?
https://www.theguardian.com/commentisfree/2020/sep/08/robot-wrote-this-article-gpt-3
https://www.ideo.com/blog/the-rules-of-brainstorming-change-when-ai-gets-involved-heres-how
I also recommend reading the article written entirely from the AI:
Headline: Are you scared yet, human?
https://www.theguardian.com/commentisfree/2020/sep/08/robot-wrote-this-article-gpt-3
Bluesky