OpenAI's VP of Engineering confirmed that ChatGPT Search uses Bing, stating, "we use a set of services and Bing is an important one." This highlights Bing's significant role in the ChatGPT search functionality.
Ivan Hristov observed that most searches in ChatGPT are powered by Bing's index, revealing that if websites are not indexed by Bing, they will be absent from ChatGPT's search results.
Hristov noted that penalties imposed by Bing directly impact visibility in ChatGPT Search, stating, "I even triggered a Bing penalty... and, as expected, it disappeared from ChatGPT search results too." He illustrated the link between Bing's index and ChatGPT’s outputs.
Mike King's validation at Tech SEO Connect emphasized that for sites to rank in ChatGPT Search, they must first be indexed by Microsoft Bing, affirming the dependency on Bing’s search capabilities.
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