SearchGPT is OpenAI's AI search experience, which has been folded into ChatGPT's built-in search. Rather than answering from training memory alone, it retrieves live web results. Live answers can include citations when the engine provides them.
For brands, SearchGPT behaves like the search side of ChatGPT: being a source it retrieves and trusts for your category is what gets you surfaced and cited. The same content and authority signals that influence ChatGPT apply here.