The LLM SEO framing is useful for remembering that you are optimizing for how a model retrieves and synthesizes, not just how a search index ranks. A study of 55,936 queries across six LLM-based search engines, published in December 2025, found 37% of all the domains cited appeared only in the LLM engines, not in traditional results. But the tactics do not differ from GEO.
Reachability, answer-first structure, citable facts, and off-site corroboration are the levers, whatever you call the discipline.