One of the most interesting developments in AI search is the role that third-party sources can play in generated answers. A brand can publish plenty of information about itself, but independent publications, expert commentary and external research provide additional sources that people and AI systems may encounter. This is particularly relevant to Digital PR.
Research from Muck Rack, published in December 2025, analysed more than one million links cited by generative AI systems. It found that 82% of citations were classified as earned media, while 94% came from non-paid sources. Importantly, earned media in this research was defined more broadly than traditional journalism. Journalistic sources accounted for approximately 20–30% of citations during the periods studied.
The findings shouldn't be interpreted as evidence that 82% of AI answers rely on newspaper coverage. However, they do highlight the importance of information published beyond a brand's owned channels. For businesses, this presents an opportunity.
When a relevant publication references a company's research, quotes one of its experts or includes the brand in an industry discussion, that coverage creates another independent source of information about the business. It can also help reinforce the subjects, expertise and products associated with that brand.
For example, a travel insurance provider consistently featured in credible articles about winter sports cover could build a stronger presence around that specialist subject.
There is no guarantee that this coverage will result in the brand appearing in an AI-generated recommendation. AI systems use different sources and approaches, and their answers can vary considerably. But relevant earned coverage increases the amount of credible information available about a brand beyond its own website. And that is valuable for traditional search, AI discovery and the people making purchasing decisions.