RAG platforms: AI search visibility ranking (2026)

What we observed in this categoryauto-generated

LlamaIndex leads the RAG platforms category with a visibility score of 25.0%, exactly double the 12.5% held by the four brands directly below it (LangChain, Pinecone, Vectara, and Dify). That two-to-one gap is significant because it means Google AI Mode is surfacing LlamaIndex in roughly twice as many relevant queries as any single competitor. The category average sits at just 5.0%, so even the mid-tier brands at 12.5% are performing well above the norm, while eight of the twenty tracked brands show zero visibility.

Every brand in the top 10 carries a citation rate of exactly 0.0%. This means Google AI Mode is naming brands such as LlamaIndex and LangChain in its responses but is not linking back to their own domains as source material. The sources actually being cited in this category are third-party sites including youtube.com, reddit.com, meilisearch.com, and onyx.app. The divergence between named visibility and citation reflects a pattern where AI answers draw on community and comparison content rather than vendor-owned pages.

Google AI Mode is the top engine for every brand in this dataset, confirming that the entire visibility landscape in RAG platforms is being shaped by a single engine. The audit also shows notable movement: LlamaIndex jumped from rank 4 to rank 1 with a 12.5 point visibility gain, while LangChain fell from rank 1 to rank 2 with an equal 12.5 point loss. Unstructured made the largest positional climb, rising 12 places from rank 19 to rank 7, entirely from a zero baseline.