AI search engines recommend the brands whose narratives hold together across every surface they can see. Most B2B brands have fragmented narratives and go invisible inside the answer. This piece breaks down a 5-step framework, the 5C Brand Narrative Framework (Category, Choice, Consistency, Credibility, Compound), using LangChain as the worked example. The brand whose story is coherent is the brand AI cites. The brand AI cites is the one on the buyer's day-one list.