ChatGPT Search
ChatGPT's web-browsing mode, which retrieves live pages and cites them in its answers.
ChatGPT draws on two things: what it learned in training, and what it can fetch from the web when it browses. ChatGPT Search is the browsing path, and it is where fresh content and live citations come into play.
That split is why a brand can be absent from the base model yet appear once the model searches. Tracking both modes gives you the full picture.